10A608_13

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TECHNICAL SPECIFICATION

FOR

SUPPLY, ERECTION AND COMMISSIONING OF 24F

ADSS OPTICAL FIBRE CABLE

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TECHNICAL SPECIFICATION FOR 24 FIBER ALL DIELECTRIC SELF

SUPPORTING (ADSS) FIBER OPTIC CABLE ALONGWITH ACCESSORIES

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Technical Specification for 24 Fiber All Dielectric Self Supporting ADSS Fiber Optic Cable

along with accessories, OLTE &MUX equipment and other Associated Equipment

1. GENERAL

1.0 The ADSS optical cable shall be of non- metallic Aerial type designed for installation on220 kV / 132 kV Power transmission lines with span lengths of 500 mts. The Biddershall offer ADSS containing 24 Nos. of Dual Window Single Mode (DWSM) optical

fibers in conformity with ITU-T recommendations G-652D. The cable shall be designedto withstand all prevailing environmental conditions including the effects of high electric

and magnetic fields produced by the proximity of live power conductors.

1.1 THE ADSS CABLE STRUCTURE SHALL BE BASED ON THE FOLLOWINGCHARACTERISTICS:

a. The ADSS cable shall be designed to withstand the Electromagnetic fields when

erected on the high voltage towers. The ADSS cable shall have a very low ElectricalConductivity to avoid currents on the surface of the cable in all situations. The

Bidder shall list the electrical parameters of the proposed ADSS cable. The Biddershall describe the design methods, including how the ADSS cable performs when

located in the electromagnetic field in the tower.

b. The mechanical structure of the ADSS cable shall be designed to withstand the windand other environmental conditions in the routes, which have been specified in this

document. The location of the fibers inside the structure shall be such that theapplication of the ADSS cable in the specified routes is possible .The ADSS cable

selected shall tolerate the normal installation procedures. The Bidder shall list themechanical parameters of the ADSS cable and describe the cable structure,

including how the fibres are located inside. The maximum permissible tension towhich the offered ADSS cable can be subjected shall be indicated in the bid.

c. The cable structure shall be such that the fibres are protected against water,

hydrogen, ultraviolet radiation and other environmental hazards encountered inIndia.

2. Design:

2.0 i) The cable shall be constructed from materials which have been technically proven and

able to withstand the electrical and environmental conditions.

ii) A non-magnetic strength member shall be incorporated in the cable and this shall providesufficient strength to WITHSTAND WIND load without being unduly stiff.

iii) The cable shall be smooth and of circular cross-section to avoid aerodynamic instability

and shall be of minimum diameter to reduce tower loadings to a minimum.

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iv) The cable shall be fully filled so as to prevent WATER CONDENSATION and electricaldegradation within the sheath. The sheath of the cable shall be stable to withstand solar

ultra-violet radiation.

v) At maximum working tension, the fiber shall not be subjected to a longitudinal strain

greater than specified by the manufacturer and longitudinal strain specifications shallconform to IEEE standard P 1222 – 1995 SECTIONS 4.1.1.9 and 5.1.1.9 for ADSS cableand there shall be no detectable increase in fiber attenuation.

2.1 ELECTRICAL AND MECHANICAL REQUIREMENTS:

Table provides ADSS Electrical and Mechanical requirements for the minimum performancecharacteristics.

ADSS ELECTRICAL AND MECHANICAL REQUIREMENTS

S.No. PARAMETERS Unit Particulars/Description

1 No.of Fibres DWSM (Dual

Window Single Mode)

No. 24F

2 Buffer Type - Loose Tube

3 Buffer Material - PBT

4 Buffer Tube Diameter mm 2.5mm outer ; Inner 1.8mm

5 Strength member - Central Glass Reinforced

plastic

6 Peripheral strength member - Aramid yarn

7 DWSM optical fibres color - Blue, orange, green and natural

8 No.of Fibres per Tube Nos. Loose Tube – 6 Nos. 4 Fibres

in each tube

9 Tube color - Blue tube as marker, orange

tube as tracer and remainingtubes of natural colors.

10 TUBE FILLING

COMPOUND

- Loose tube is filled with

thixotropic jelly

11 Flooding compound - Cable core is flooded with

water blocking jelly

12 Single layer polyster tape - Wrapped over the cable core

13 LLDPE inner sheath mm Minimum thickness is 1.5 mm black color

14. BINDING YARN TAPE - LONGITUDINAL TAPEAND CONTRA HELLICAL

BINDERS

15 HDPE (anti tracking UV)

outer jacket

Nominal thickness

2.00mm,+0.5mm,-0.3mm

16 Overall diameter of the cable mm 17.0mm, +/-0.5mm

17 Overall weight of the cable Kg 240 +/- 10 kg/km

18. Minimum bend radius mm 285 mm during installation200 mm installed

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19 Tensile strength KN 33.00 kN

20 Span length mtrs Should be suitable for 500mtrsspan length

21 Allowable sag 1.0 % of maximum span length

22 Fibre cable drum lengths km 5km of drum length

23 Wind speed KM/ HR 180

Service Conditions The equipment / materials offered will be entirely satisfactory for operation under the

climatic conditions indicated below:

a) Maximum ambient air temperature (in shade) 45 deg.C b) Maximum ambient air temperature (under sun) 50 deg.C

c) Maximum daily average ambient air temperature 35 deg.Cd) Maximum yearly average ambient air temperature30 deg.C

e) Maximum humidity 100%

21.2. Due consideration will be given to any special devices or attachment put forward by theBidder which are calculated to enhance the general utility and the safe and efficient

operation of the equipment / material.

2.12 DETAILS OF FIBRES:

FIBRE PARAMETERSi) Mode field DIAMETER (um) : 9.2

ii) Deviation in mode field diameter(m) : 0.4iii) Attenuation Coefficient(dB/km) : 0.35 max

iv) Attenuation VARIATION (dB/km) withWavelength ( 25nm) : 0.02 (1525-1575)

Temperature : 0.05

v) Mode Field non-circularity (%) : 6

vi) Cutoff Wavelength (nm) : 1260vii) Chromatic Dispersion (ps/nm

2km)

@1310 (1285-1330) nm : 3.5@1310(1270-1340) nm : 6.0

@1310(1525-1575) nm : 20.0viii) Zero dispersion wavelength (nm) : 1300 –1324

ix) Zero dispersion slope (ps/nm2

km) : 0.092

x) Refractive index : 1.47xi) Refractive index profile : Step indexxii) Cladding design : Matched

xiii) Numerical aperture : 0.1xiv) Bandwidth distance product(MHz km) : N/A

xv) Bend Performance : < 0.05 dB(37.5 mm radius, 100 turns)

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2.13 The operating wave length : 1300 – 1580 nm.(ATTENUATION shall be as specified in G.652D)

2.14 The fibres shall be optimized for operation between 1300 – 1595 nm such that the

dispersion coefficient is nominally zero but shall not EXCEED 33.5 ps / km. nm.

2.15 The Bidder shall state the attenuation and the dispersion coefficients at the wavelength of1550nm and 1310nm.

2.16 MIINIMUM BENDING RADIUS.The Bidder shall specify the minimum allowable radius of bending for ADSS under all

temperature conditions for all long term and short term applications.

1.1 OPTICAL WAVEGUIDE FIBRES.Design requirements of the optical wave-guide fibres shall be as specified.

The single mode optical wave-guide fibres shall have characteristics in accordance withthe International Telegraph and Telephone Consultative Committee (CCITT) - Red Book

(1984) – Volume-III. FASCICLE III. 2 –International Analogue Carrier SystemTransmission Media, Characteristics. Recommendations G.652D (Study Group XV and

EMBD) :

The offered single mode fibre shall be at dispersion minimized at a wavelength around1550 nm for use in 1550 nm window. The maximum attenuation coefficient of any

individual fibre shall not exceed 0.25 db/km in the 1550 nm region at 20 deg. C. TheBidder shall offer the typical attenuation spectral curves in the 1200 nm to 1600 nm

wavelength range. The additional attenuation introduced for 100 turns of uncabledoptical fibres (loosely wound) with 37.5 mm radius mandrel and measured at 1550 nm at

+20 deg. C shall be less than 0.5 db compared to the initial value measured beforewinding. The additional temporary attenuation compared to the initial value measured at

+ 20 deg. C due toi) Temperature cycling (-20 deg. C to + 80 deg. C) shall be less than 0.05 db/km.

ii) Temperature rise on account of short circuit current shall be less than 0.25 db/km.The above increase in attenuation shall be only temporary. There shall be no

measurable increase in the fibre attenuation after normalcy is restored. Theattenuation of the fibres embedded in the ADSS shall be distributed uniformly

throughout its length so that there are no point discontinuities in excess of 0.05db. The fibre lengths in each reel shall be continuous. No splice of fibre within a

reel of ADSS shall be accepted. The optical wave-guide fibres shall becompletely protected from water penetration and environmental conditions. The

Bidder shall indicate index of refraction of the fibre core and cladding at 1550 nmand the effective group refractive index for use with optical time domain

reflectometer (OTDR).

1.2 FIBRE SPLICE LOSS.The splicing loss of any two fibres in any case shall not exceed 0.10 db/splice. Ageing

shall not cause increase of the nominal optical attenuation at ambient temp. at 1550 nm by more than 0.05 db/km of fibre over a period of 25 years. The bidder shall submit the

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ageing characteristics of the offered optic fibres. The total additional attenuation abovethe nominal attenuation due to regular splices, repair splices, connectors, temperature

variation, ageing etc. shall be indicated by the Bidder.

1.2.1 CHROMATIC DISPERSION.

A single mode optical fibre cable (ITU-T Rec.G.652D) shall have followingdispersion characteristics.

a) Zero dispersion wave length 1550 nm

b) Maximum tolerance on the Zero dispersion

wavelength

+/- 15 nm

c) Maximum chromatic dispersion coefficient in

operation window from 1525 to 1575 nmwavelength region

<= 3.5 PS/ nm x

km

1.2.2 FIBRE MATERIAL The fibre shall be manufactured from high grade silica and doped as necessary to provide

required transmission performance. The chemical composition of the fibres shall bespecifically designed to minimize the effect of hydrogen on the transmission properties.

The fibres shall be heat resistant. The Bidder shall submit a certificate or test data toguarantee the maximum rated temperature of the fibres.

1.2.3 FIBRE IDENTIFICATION.

Each optical fibre for identification shall be colour coded corresponding to sequential

numbering. The colors and numbering shall be in accordance with relevant International /Indian Standards in vogue. The colour shall be integrated in the fibre coating and shall

be homogeneous. The colour shall not be erased when handled during splicing. Theoriginal colour shall be dissemble throughout the design life of the ADSS. The colour

should not bleed from one fibre to the other and not fade when wiping the fibre withacetone or alcohol. If the fibres are regrouped in bundles or in tubes the later shall be

colored according to a determined code.

3. FIBRE CHARACTERISTICS:

3.0 Fibre Types:

All fibres shall be of the single mode dual window type. Fibres shall comply with ITU-TRecommendation G.652D (Characteristics of a Dual – Window Single Mode Optical Fibre

Cable).

3.1 The fibre shall be entirely suitable for splicing by means of a normal fusion splicingtechniques.

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3.2 The fibre shall be manufactured from high grade silica and doped as necessary to providethe required TRANSMISSION PERFORMANCE.

3.3 The chemical composition of the fibres shall be specially designed to minimize the effect

of hydrogen on the transmission properties.

3.4 The fibre cable life expectancy shall be at least 30 years.

4.0 Number of Fibres

The standard number of fibres to be provided in a cable is 24.

4.1 Fibre Coloring Fibre coloring shall conform to EIA/TIA-598. The color-coding shall be permanent thus

withstanding normal handling; e.g., during termination, testing, or cable relocation. Refer toEIA – 359 for color identification and coding.

5. Fibre Buffering and Protection

5.0 The primary coating shall consist of an inert MATERIAL, WHICH can be readily

removed for splicing purposes without damage to the fibre and without necessitating theuse of hazardous chemicals.

5.1 A secondary coating may be applied directly over the primary coating (tight buffering)

or alternatively, a loose jacket may be provided (loose buffering). Where a tight fittingsecondary coating is provided, it shall consist of an inert material. Where a loose jacket is

provided, a jell or hydroscopic substance shall be included in the cable structure to prevent moisture from being retained inside the loose jacket.

5.2 The fibre coating shall be translucent such that fibre splicing techniques using opticalalignment of cores by means of injection and detection of light through the cladding shall

be supported .In addition, the fibre coating shall be optically matched to the cladding to promote cladding mode stripping.

5.3 The composition of the cable shall be specifically designed to reduce the production of

hydrogen gas and to prevent the migration of hydrogen into the fibre.

5.4 The Bidder shall describe specific measures taken to reduce the production of hydrogengases and any installation constraints that should be observed.

6. Technical Characteristics

6.0 Fibre cable drum lengths shall be such that to avoid joint when used in a 220 kV / 132

kV transmission line of 5 km length to reduce losses due to fibre splices.

6.1 The longitudinal strain specifications shall conform to IEEE Standard P1222-1995,sections 4.1.1.9 and 5.1.1.9 for ADSS cable.

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6.2 The ADSS cable shall withstand for span length 500 mts.

Installation

7.0 ADSS cable shall be attached to the tower’s body so that the minimum specified groundclearance is maintained on each span under worst case conditions. also, under any

loading conditions, the optical cable shall not sag below the lowest conductor. At thesame time, tower loading shall be minimized, considering the cable as low as practicable

within the main body of the tower. All ADSS cable installations shall meet therequirements of ANSI /IEEE Standard 524, Aerial ADSS Fibre-Optic Cable, (a)

Installation and (b) Calculations of Structure Loads.

7.1 Terminal and suspension clamps shall be designed to prevent damage to the cable underthe most expected severe loading. Suspension clamps shall allow a limited amount of slip

if there is a significant amount of differential loading.

7.2 Proprietary lightweight helical dampers shall be provided to counteract aeolian vibration.

7.3 Cable length, on DRUMS, shall be such so as to avoid making joint when used in a 220kV / 132 kV transmission line of 5 km length. Actual cable lengths to be delivered shall

be determined by the Bidder’s evaluation of the network configuration.

7.4.1 Fibre splicing shall cause a minimum increase in attenuation. The fibre splicing shall becarried out using arc fusion welding techniques. Each splice shall be inspected and tested

after installation, within the splice housing but before the housing is closed and sealedFusion splice optical losses shall average 0.1 dB per splices. No single splice loss shall

exceed 0.15 dB.

8. FIBRE OPTIC APPROACH CABLE:

Loose or tight buffer type Optical Fibre Approach Cable (OFAC) of 24Fibres. Dual

window Single Mode (DWSM) optical fibres shall be offered. The fibre optic

approach cable shall be entirely suitable for laying through HDPE pipe in the cable

ducts and on cable trays. The cable shall comprise of a tensile strength member

fibre support/bedding structure, core wrap/bedding, armouring and over all

impervious jacket. No intermediate joints shall be permitted in any run of approach

cable between its two termination points. The cable sheathing shall have additive to

prevent rodent attack.

8.1 The fibre optic approach cable shall have a minimum outer jacket thickness of 3.0

milli meters and shall meet the following requirements.

i. Fire retardant and no acid gas evolution.

ii. Resistance to ultra-violet deterioration.

iii. Anti-moisture penetration.

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iv. All other requirements will be same as ADSS.

8.2 Installation.

Installation in cable trenches and on cable trays. Each OFAC shall be pulled in HDPE

pipe of 40 mm diameter and required thickness (mm) placed in cable trench (separatetrays for OFAC’s). There shall be spare HDPE pipes for the OFAC’s to be decided bythe Purchaser. The pulling instructions and minimum-bending radius shall be indicated

by the bidder. The route for laying the OFAC shall be decided by the contractor inconsultation with the Purchaser. The supply of the HDPE pipe is the OFAC contractor’s

responsibility.

8.3 Burial.In the case of direct burial the OFAC shall be installed in HDPE pipe of 40 mm diameter

and required thickness (mm) to a depth of 1.0 m. The pipe shall be embedded in M 15concrete with cover of 37.5 mm (150 mm overall) and the trench filled with excavated

material and hand compacted. The route for laying the OFAC shall be decided by thecontractor in consultation with the Purchaser. The supply and burial of the HDPE pipe is

the responsibility of the contractor.

8.4 An approach cable is defined as the cable installed between the final splice box, forming thetermination of the ADSS fibre cable in the power line and Fibre Distribution Panel (FDP)

installed within the terminal building, or the cable traversing a site and terminated in splice boxes located in separate buildings. FDP shall be of dust and vermin proof construction and

shall be provided with degree of protection IP 52 as per IS 2147. The panel shall be suppliedwith base frame made of structural steel sections. All necessary hardware required for

welding the frame to the insert plate shall be supplied by the contractor. Purchaser would provide insert plates in the concrete floor.

8.5 The approach cable shall be entirely of non-metallic construction and shall be suitable for

direct burial in the ground and for installation within cable ducts and on cable trays .Thecable shall comprise a tensile strength member, fibre support / bedding structure, core

wrap / bedding, armoring and overall impervious jacket.

8.6 No intermediate splices shall be permitted in any approach cable between its twotermination points.

8.7 Cable markers shall be provided and installed to mark the location and route of buried

cables.

8.8 The approach cables shall enter the buildings through cable ducts and within each building; the cable shall be run upon cable trays or racks. The Contractor may utilize

existing ducts, trays, racks, etc., where appropriate, but shall supply these where traysracks etc don’t presently exist. The cables shall be affixed to cable supports using

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approved ties, clips or cleats at regular intervals. Whether laid underground or in cableducts the OFAC shall be laid in a conduit of HDPE pipe of suitable diameter specified by

the bidder in the bid.

8.9 On short runs of cable, for which cable supports are not provided, the Contractor shall fix

the cable to the structure of the building using approved fixings and cable cleats.

8.10 The Contractor shall be responsible for forming holes through walls and floors for the

installation of these cables. Caution shall be taken to ensure existing equipment is protectedfrom hole – drilling dust. The holes shall be neatly drilled and neatly furnished for

protection from moisture, dust , and vermin intrusion. Cables exiting from the ground or passing through floors shall be protected against mechanical damage for a distance of 450

mm above finished ground or floor level.

8.11 The requirements of the following US National Electric Code articles apply to all approachcable installations:

a.

Plenum Cable, Non- Conductive Fibre: NEC 770,UL 1581 b. Plenum Cable, Non- Conductive Plenum: NEC 770,UL 910

c. Plenum Cable, Non- Conductive Riser NEC: 770.UL 1666”

6.3 Number of fibres in OFAC shall be 24 Nos.

9.0 Drums:

9.1.1 The cables shall be supplied in non-returnable strong wooden (or alternatively steel)drums provided with lagging of adequate strength, constructed to protect the cable

against any damage and displacement during transit, storage and subsequent handling andstringing operations in the field. The bidder shall list the information concerning the

following: weight, dimensions, material and standards applied.9.2 All wooden components shall be manufactured out of seasoned soft wood free from defects

that may materially weaken the component parts of the drums. Preservative treatment foranti-termite /anti-fungus shall be applied to the entire drum with preservatives of a quality

which is not harmful to the cable. The bidder shall furnish in the bid details of anti termite /anti fungus treatment given to the drum.

9.3 Before reeling, cardboard or double corrugated or thick bituminous water proof bamboo paper shall be secured to the drum barrel and inside of flanges of the dry drum by means of a

suitable commercial adhesive material. The paper should be dried before use After reelingthe cable the exposed surface of the outer layer of the cable shall be wrapped with thin

polythene sheet across the flanges to protect the cable from dirt, grit and damage duringtransportation and handling and also to prevent ingress of rain water during storage and

transport.

9.4 A minimum space of 75 mm shall be provided between the inner surfaces of the externa protective lagging. A few staggered lagging on the outermost layer of cable shall be

provided to avoid unreeling of cable during transit. There shall be minimum of two bindersconsisting of iron/ galvanized steel wire. Each protective lagging shall have two recesses to

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accommodate the binders.

9.5 The cable ends shall be properly sealed and secured with the use of U-nails or bolts onthe side of one of the flanges to avoid loosening of the cables layers in transport and

handling.

9.6 Only one length of cable shall be wound on each drum. The method of lagging to beemployed shall be clearly stated in the tender. Each drum shall be accompanied by the

following information.a. Manufacturer’s name and address

b. Contract / Award letter number c. Type of the cable

d. Gross weight of the cable and drume. Weight of empty drum with lagging

f. Net weight of the cableg. Length of the cable

h.

Drum and lot number i. Name and address of the consignee

j. Month and year of manufacturek. Rotation of drum

10. Maintenance:

10.0 Maintenance of the ADSS FIBRE cables shall be carried out only in fault conditions or

for special needs. To facilitate cable maintenance, the following shall be provided:

a. The exact route descriptions, location of splices and repeaters shall be provided both to Headquarters’ office (purchaser) and to the terminal sub-stations.

b. The documentation and the marking of the individual fibres and connectors shall be provided, both centrally and to the particular stations.

c. Documentation in the terminal sub-stations must include the commissioning test

values to help the maintenance staff in comparing the measurement values withthe original ones.

10.1 The Bidder shall propose the method for temporary and permanent repair procedures

The proposal shall include the material needed for fibre cable maintenance (ADSS andOFAC). Spares as indicated in Schedule shall be quoted and shall be considered in

evaluation of bid.

10.2 The Bidder shall provide a list of any additional tools and test equipment (common andspecialized) with recommended quantities necessary to install, operate and maintain all

equipment to be supplied in this procurement. In addition, sources and list of prices arerequired for equipment not manufactured by the Bidder. This shall not be considered in

evaluation of the bid.

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10.4 The Bidder shall describe his own maintenance support capabilities and facilities in India

11. Standards

The material shall conform to the following Indian / International Standards, specified

UNDER AND published unless otherwise specified in this specifications.

REFERENCEABBREVIATION

NAME & ADDRESSES

BSBritish Standards, British Standards Institution, 101,Pentonville Road, N-190-ND, UK

IEC/CISPR International Electrotechnical Commission,Bureu Central DE la Commission,

Electro Technique International, 1 Rue de verembe,Geneva, Switzerland.

IS

INDIAN STANDARD INSTITUTION,

Manak Bhavan, 9, Bahadur Shah Zafar Marg, New Delhi – 110 001, INDIA

ISO

International Organization for Standardization,

DANISH BOARD of StandardizationDanish Standardization Street, aurehoegvej –12

DK – 2900, Heeleprup, Denmark.

NEMA

NATIONAL ELECTRIC MANUFACTURE

ASSOCIATION, 155 East 44th Street. New York, NY 10017,USA.

CSACANADIAN STANDARD ASSOCIATION178, Raxdale Boulevard, Raxdale Ontario, Canada M9W IR

IEEEIEEE, 347 East 47th Street New York, NY 10017A USA

EIA/ TIA

GLOBAL ENGINEERING DOCUMENT

15, Inverness Way EastEndlewood, Colorado 80112 –5704 USA.

NEC NATIONAL FIRE PROTECTION ASSOCIATION1 Battery March Park

Quincy, Massachusetts 02269-0059USA.

JISJAPANESE STANDARDS INDUSTRIAL1024 Akasaka 4- Chome

Minato – KUTokyo, Japan.

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INDIAN / INTERNATIONAL STANDARDS

S. NO.

INDIANSTANDARD

TITLEINTERNATIONAL

STANDARDS

1. The international telecommunication union(ITU-T) recommendations G.652D, G.530

2. International electro technical commission(IEC) vocabulary

IEC:50 – 1975

3. Optical fibres.Part 1: generic specification

IEC: 793-1

4. Optical fibre cablesPart 1: generic specification

IEC: 794-1

5. Aluminium alloy redraw rods IEC: 104-1987

6. Aluminium –clad steel wires for electrical purposes

IEC:1232-1993

7. Fibre optic testProcedure series

EIA-TIA-445(FOTP.S)

8. 1S: 2121 Specification for conductor and earth wireAccessories for overhead power lines

9. IEEE standard construction of compositeFibre optic overhead ground wire (OPGW)

For use on electric utility power lines.

IEEE: 1138-1994

10. IS: 398 Standard conductor for overhead lines IEC: 1089-1993

11. IEEE standard for all dielectric self-supportingfibre optic cable (ADSS) for use on overhead

utility lines.

IEEE: P1222-1995

12. Standard colors for color identification andcoding

IEEE: 359A

13. Color coding for fibre optic cables IEEE: 598

14. ANSI/IEEE STANDARD FOR AERIAL ADSS

FIBRE –OPTIC CABLE

ANSI/IEEE: 524

15. NFPA NATIONAL ELECTRIC CODE OR

PLENUM FIBRE – OPTIC CABLE

NEC: 770

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TYPE TESTS:

TEST STANDARD (S)

I OPTICAL CHARACTERISTICS OF FIBRES

1 Attenuation IEEE Std. 1138IEEE STD. P1222

(EIA/TIA – 455-61,78A)(IEC 793-1-C1A,B,C)

2 CUTOFF WAVELENGTH IEEE STD. 1138

IEEE STD PI222(EIA-455-80, 170)

(IEC-793-1-C7A,B)

3 FIBER DISPERSION IEEE STD. 1138IEEE STD. P1222

(EIA/TIA-455-168A,169A,175A)(IEC-793-1-C5A,B,C)

4 FREQUENCY RESPONSE IEC-793-1-C2B

5 MODE FIELD DIAMETER IEEE STD. 1138

IEEE STD. P1222(EIA/TIA-455-164A,165A,167A)

(EIA-455-174)(IEC 793-1-C9A,B,C,D)

6 TEMPERATURE CYCLING IEEE STD. 1138

IEEE STD. P1222(EIA/TIA-455-69A)

(IEC 793-1-D1)

II MECHANICAL CHARACTERISTICS OF FIBRE

1 ABRASION IEC 793-1-B4

2 CORE CONCENTRICITY IEC 793-1-A3

3 MACROBENDING EIA/TIA-455-62A

(IEC 793-1-C11)

4 MICROBENDING IEC-793-1-C3

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III TEST STANDARD(S)

1 PROOF TEST IEC-793-1-B1A. CONSTANT STRESS

B. CONSTANT LONGITUDINAL STRAIN

C.

CONSTANT BENDING STRAIN2 STRIPPABILITY IEC 793-1-B6

3 VISUAL EXAMINATION EIA/TIA-455-13(IEC 793-1-B5)

IV Mechanical Characteristics of Cable

1 ADSS CABLE FITTINGS IEEE STD. P1222

2 AEOLIAN VIBRATION IEEE STD. 1138

IEEE STD. P1222(ANNEX A)

3 CABLE BENDING IEEE STD. 1138

IEEE STD P1222(IEC 794-1-E11)

(EIA-455-88)

4 COLOR CODING EIA-359A,598(IEC 304)

5 COMPOUND FLOW EIA-455-81A

(IEEE STD. 1138)(IEEE STD. P1222)

6 COMPRESSIVE LOADING EIA/TIA-455-41A

7 CORROSION (SALT SPRAY) EIA/TIA-455-16A

8 CREEP IEEE STD. 1138

IEEE STD. P1222

9 CRUSH RESISTANCE IEEE STD. 1138IEEE STD. P1222

(EIA-455-26A0(IEC 794-1-E3)

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IV Test Standard(s)

1 Cut Through IEC 794-1-E12

2 Flexibility/Cyclic Bending EIA-455-104A

(IEC 794-1-E6,E11)

3 Fungus Resistance EIA-455-56A

4 Galloping IEEE Std. 1138

IEEE Std. P12229EIA/TIA-455-25A)

5 High –Low Temperature Bending EIA/TIA-455-37A

6 Humidity EIA/TIA-455-5B

7 Impact IEEE Std. 1138

IEEE Std. P1222(IEC 794-1-E1)

8 Sheave IEEE Std.1138

IEEE Std. P1222(Annex A)

9 Temperature Cycling IEC 794-1-F1

(EIA-455-162)

10 Tensile Strength IEEE Std. 1138IEEE Std. P1222

(IEC 794-1-E1)(EIA-455-33A)

11 Torsion, Twist EIA-455-36A,85A

(IEC 794-1-E7)

12 Water Blocking IEEE Std. 1138

13 Penetration IEEE Std. P1222(IEC 794-1-F5)

(EIA/TIA-455-82B)

14 Water Wicking EIA/TIA-455-39A

15 Weathering, Heat EIA-455-17AAging

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In the event of the supply of material conforming to any standard including JIS other thanStandards listed above, the salient features of comparison shall be brought out and furnished

along with the bid. A copy of each of the standard in English version shall be enclosed withthe bid.

12.0 SPLICES AND CONNECTORS

12.1 SPLICES:

All fibre splices shall be of the fusion type, except where demountable connectors arespecified. Fusion splicing shall be carried by trained personnel using automatic fusion

splicing equipment designed for the fibre type.The accurate alignment of fibre cores, prior to splicing, shall be verified using a

technique that monitors the optical power transmitted across the splice interface.

Fusion splice optical losses shall average 0.1db per splice. No single splice loss shall exceed0.15 db. Splices shall be mechanically strengthened and protected from the environment by

means of splice sleeves or enclosures. The finished splice shall be supported within thespliced box by means of suitable clips or restraints. It shall be possible to remove and

replace the splice in the support device without risk of damage to the splice or fibre. Eachfusion splice shall have a spare length of fibre of approximately 1 m associated with it. This

excess fibre shall be coiled neatly and clipped (or otherwise retained) within the splice box.

The splicing shall be performed at ground level. Splice boxes conforming to IP 55 of IS-2147 shall be mounted into the towers at least 5 meters above the ground. The cable shall be

fastened into the tower structure. In each splicing location at least 15 meters of free cablemust be included for future splicing at ground level.

A single splice box conforming to IP 55 of IS-2147 shall be provided on each sub-station

gantry with capacity for two cable terminations. It shall accommodate all individual fibresplices between any of the four possible cables. It shall be fitted with suitable cable

clamping glands at its base for cable strain relief. The four cable entries shall be located onthe underside of the splice box and shall be easily removable to ground level. All cable

entries used or unused, shall be weather proof and sealed but still accessible for future useand weatherproof sealing. The box shall be suitably dimensioned to accommodate the

excess loops of optical fibre associated with each splice. Easily removable splice trayassemblies shall be used to provide mechanical support for the supplies and to afford a

means of neatly retaining the excess fibre. Then splice box shall be of steel constructionfinished internally and externally using a durable paint system. Access to the box shall be by

means of a bolted front panel. The splice box shall be fitted with an approved identity label(e.g. engraved laminated).

Where an existing optical fibre link is being relocated and its present termination cable's

splice box is no longer required at its present location, that splice box and its associatedterminal cable may be relocated to the link's new terminal location.

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CONNECTORS:

The individual fibres of termination cables, terminal equipment optical connection tailand optical patch cords shall be terminated by demountable connectors at the Fibre

Distribution Panel (FDP). The connectors shall be of FC type. Each connector shall be

properly labeled.The connectors shall be factory assembled in strict accordance with the manufacturer’sinstructions.

Demountable connectors shall be protected against contamination and mechanical

damage during shipment and installation of the associated cable.

12.3 FIBRE DISTRIBUTION PANNELS:

The Fibre Distribution Frame shall have a capacity for termination of 72 fibres and entryfor two nos. of OFC cables each having capacity of 24F. Auxiliary fibres should be

provided to facilitate testing & maintenance of the fibers. The spare fibre should be properly terminated. Additional 2 Nos. of trays with a 24 F capacity shall be provided as

spare for each direction.Connector Adaptors :

Type of Connector Adaptor : FC/PC to FC/PCCapacity of bay frame : 0.5 dB

Capacity of bay frame:(i) Line side : Maximum capacity to terminate 24 pigtails

or patch cord through 24different suitable inlets. Each cableinlet shall cater for 24Nos. of FC/PC type connector pigtails

or patch cords each having diameter of 3 mm.ii) Equipment side: - do –

FDPs shall be provided in which fixed couplers are provided to mount each termination

cable’s demountable (i.e the termination ends of each fibre of each optical fibre link and thedemountable connectors of all patch cords that interconnect FDPs within the same building.

Each FDP shall also have spare space where 24 additional fixed couplers to prevent dust

ingress to the couplers of unused fibres.

Optical connection tails, generally confirming to the requirements above for terminationcables, shall be provided to connect each item of optical terminal equipment to the optical

fibre link connectors in its respective FDP.

Optical patch cords shall be provided to enable the patching of any item of opticalterminal equipment to any fibre in any link terminated at the building in which the

equipment is housed. This shall include cords for use within FDPs and cords permanentlyinstalled between FDPs to enable the through connection of any fibre terminating in one

FDP to any other FDP in the same building.FDPs may be stand - alone cabinets, be provided as an integral part of terminal

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equipment, or designed to incorporate the fibre splice boxes. In the latter case, physicasegregation shall be provided between the splice box and distribution panel sections.

13.0 PIGTAIL CORDS.

The pigtail cords will be used for the interconnections of the approach cables with the

respective optical terminal equipment. The optical fibres of the pigtail cords andapproach cable shall be fusion spliced and protected in an approved type terminal box.

On the optical equipment side, FC-PC type optical connectors shall be used. Insertion

loss shall not exceed 0.5 d B and return loss shall not be less than 35 d B. The pigtailcords with optical connectors, terminal boxes and flexible corrugated tubes are an

integral part of the scope of supply of the ADSS/OFAC manufacturer. The technicaspecifications of the pigtail cord with a connector, terminal box and of the tubing offered

shall be provided with the bid.

14. INSTALLATION ASSOCIATED HARDWARE AND ACCESSORIES:

The scope of supply of the optical cable includes the assessment and supply andinstallation of required fittings and hardware. The Bidder shall provide documentation

justifying the adequacy and suitability of the hardware used. The exact requirements ofthese accessories to ensure satisfactory performance shall be determined by the

contractor. The fittings and accessories described herein indicative of installationhardware typically used for ADSS cable installations and shall not necessarily be limited

to the following.

a) Materials: All suspension clamps dead end clamp and pipe holding clamps

assemblies shall be fabricated from aluminum or ALUMINUM ALLOY proposed

exceptions shall be submitted with supporting documentation for prior approval ofAPTRANSCO.

b) Suspension Clamp Assembly preformed Armour GAP SUSPENSION clamps andaluminum alloy armour rods shall be used. The suspension clamp assembly shal

be designed to carry the maximum vertical load and shall have SLIP strength ofnot less than 25 KN not greater than 35 KN. Terminal and suspension clamps

shall be designed to prevent damage to the cable under the most expected severeloading. Suspension clamps shall allow a limited amount of slip if there is a

significant amount of differential loading.

c) Dead End Clamp Assembles: Tension gaps constructed from preformed wireinstalled over preformed rods shall be used dead end clamp assembles shall allow

the ADSS to be continuous pass through without cutting the ADSS. The slipstrength shall be not less than 95% the rated tensile strength of the ADSS.

d) Pipe Holding Clamp Assembles: Clamp assemblies shall hold the down pipe with

a force greater than 10% and shall withstand a strength load of 10 NMWITHOUT becoming loose from the tower structure. The clamp assemblies shall

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locate the down pipe on the inside of the tower whenever possible. The clampassemblies shall be installed at intervals of two (2) meters or less and shall be

attached directly to the tower leg cross members without drilling or any otherstructural modifications.

e) Vibration Dampers: Vibration dampers type 4R stock bridge type or equivalent

having four (4) different frequencies spread within the Aeolian frequency bandwidth shall be used for suspension and tension points on each span of ADSSinstalled on transmission lines of 130 k V and above.

The contractor shall have the responsibilities for determining the exact placement

of vibration dampers. Vibration damper clamps shall be made of aluminum oraluminum alloy shall support the dampers during installation and shall maintain

the dampers in position without damage to the ADSS cable and without causingfatigue. Armour or patch rods made of aluminum or aluminum alloy shall be

provided as required to reduce clamping stress on the ADSS cable. The vibrationdamper body shall be hot-dip galvanized mild steel / cast iron or shall be

permanent mould case zinc alloy. Proprietary lightweight helical dampers shall be provided to counteract Aeolian vibration.

f) Clamp Assembly Earthing Wire: Earthing wire consisting of a 1500 mm

length of aluminum or aluminum alloy conductor equivalent in size to the ADSSshall be used to earth suspension and dead end clamp assemblies to the tower

structure. The earthing wire shall be permanently fitted with lugs with each endThe lugs shall be attached to the clamp assembly at one end and the tower

structure at the other. All cable accessories suspensions and dead end hardwarevibration damper hardware and other clamps shall be designed for the type and

size of the cable as detailed below.

SUSPENSION CLAMPS ASSEMBLY:

Each set of the suspension SYSTEM FOR (35.0 KN) ADSS Cable shall consist of thefollowing:

i) Suspension clamp Dog bone Vibration Damper DB 0.5 – 2 Nos. (GALV STL/ZINC)

ii) Shackle 15/25A - 2 Nos. (GALV STEEL)iii) Suspension unit strap closed - 2 Nos. (GALV STEEL)

iv) Suspension Clamp - 1 No. (AL ALLOY)v) ARMOUR ROD SET - 1 No. (AL ALLOY)

vi) Reinforcing Rod Set - 1 No. (GALV. STEEL)

Each set of the suspension clamp Assembly for (35.0 KN) ADSS Cable shall consist of thefollowing:

-------------------------------------------------------------------------------------------------------------------

S.No. Description Material used Qty.-------------------------------------------------------------------------------------------------------------------

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1. Spacer 25.4 X 127 X 2.3 AL Alloy 42. M 12 S. Washer Form `B’ GLV STL 4

3. M 12F/Washer Form À’ GLV STL 44. M12 FULL NUT GLV STL 4

5. M12 COACH BOLT GLV STL 4

6. Ò’ RING NEOPRENE 47. SADDLE GLV STL 18. CLAMP BODY without PIP AL ALLOY 1

9. CLAMP BODY with PIP AL ALLOY 1--------------------------------------------------------------------------------------------------------------------

SPECIFICATIONS:

1. MATERIALS: Body castings - AL ALLOY LM6M TO BS1490

SPACER - AL ALLOY 6082 T 6 TO BS 1474SADDLE - STEEL 070M20 TO BS 970

Ò’ RINGS - SYNTHETIC RUBBER 2. CUP HEAD COACH BOLTS- GRADE 8.8 TO BS 4933

NUTS - GRADE 8 TO BS 3692PLAIN WASHERS - TO BS 4320

SPRING WASHERS - TO BS 44643. ALL Ferrous components Galvanised TO BS 729

4. Installation TORQUE 50 Nm

5. Minimum failing load of clamp Assembly, 95 KN.

6. SADDLE CLAMP CASTING ONLY TO BE PERMANENTLY MARKED:

7. All Bolt Threads to be protectively COATED WITH approved Grease.

HELIFORM SAMPLE SPECIFICAITON

1) DESCRIPTION - REINFORCING ROD SET

Fitting Range - 16.3 mm - 17.3 mmMaterial - Galvanized Steel

Rod Dia - 2.35 +/- 0.05 mm No. of Rods - 20 (5-5-5-5)

Formed outer Diameter - 18.54 +/- 0.2 mmPitch length - 105 +/- 5 mm

Lay - Left handColour code - Red

2) Description - Armour Rod set

Fitting Range - 16.3 MM - 17.3 mm + Reinforcing Rod setMaterial - AL ALLOY

ROD DIA - 4.24 +/- 0.05 mm

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No. of Rods - 16Formed outer Diameter - 26.84 mm +/- 0.2 mm

Pitch Length - 152 +/- 5 mmLay - Right Hand

Colour code - Blue at the Center

However the above sample specification indicated shall be in accordance with the dia of the cable being supplied.3) SHACKLE: (15/29A)

Each set of shackle shell consist the following:

i. M16 x 70 CROSS DRILLED BOLT

WITH FULL NUT OF GALV STL - 1 No.

ii) SPLIT PIN 5 X 32 LG of S T STEEL - 1 No.

iii) SHACKLE BODY 15/29 of GALV STL - 1 No.

SPECIFICATION:a) MATERIAL:

BODY FORGING - STEEL GRADE 080 M 40 TO BS 970

SPLIT PIN - STAINLESS STEEL GRADE 321 S31 TO BS 970

b) COMPONENT SPECIFICATION_ BOLT – GRADE 8.8 TO BS 3692

FULL NUT - GRADE 8 TO BS 3692

SPLIT PIN - 5 X 32 LG TO BS 1574C) Galvanising TO BS 729

D) Minimum failing Load 70 KNE) Applicable standard BS 3288

F) BEFORE GALVANISING, it should be marked with all details.

SUSPENSION UNIT STRAP CLOSED:

1. Material _ Steel Grade Fe 430 A TO BS 970 – 1955 (EN 10 025)2) Galvanising to BS 729

3) Minimum failing Load - 95 KN Tested in pairs

4) Debun or Remove all sharp Edges5) Before Galvanising it should be marked will all details.

SPACER - (25.4 x 12.7 x 2.3)Spacer’s to be free from sharp Edges

Material - AL ALLOY 6082 T 6 TO BS 1474

M 16 CLEVIS BOLT WITH NUT/SPLIT PIN HOLE:

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Materials - Bolt Grade : 8.8 Nut Grade : 8

Component Specification:

BOLT AND NUTS TO BS 3692 EXCEPT where shown

i) The Bolt shall be fitted with a nut which must run down, Finger Tight only, to clear the SPLIT PIN HOLE after Galvanising.

ii) Galvanizing TO BS 729iii) For use in fittings with a 70 KN Minimum failing load.

iv) BOLT Head Depth - 10.18 Max / 9.82 Min Nut Depth - 13.00 Max / 12.57 Min

Across / Flats - 24.00 Max / 23.67 Min.4R Stock Bridge VIBRATION DAMPER:

Each set of Vibration Damper shall consist the following items:

i) Messenger (L=390) - 1No. (GALV STL)

ii) Weight 0.5 k g each - 1 Kg. (Zinc)iii) Washer, M 12 Spring - 1 No. (GALV STL)

iv) Washer, M12 - 1 No. (S T. STL)v) NUT, M 12 BINX - 1 No. (S T. STL)

vi) SCREW M 12 X 70 - 1 (S T. STL)vii) KEEPER BR `6’ - 1 (AL)

viii) Clamp BR `6’ - 1 (AL)

SPECIFICATIONS:

i) Material:

a) Clamp / Keeper - AL ALLOY LM 6 TO BS1490 b) Weights - Cast Zinc Alloy Mazak 3 TO BS 1004 ALLOY A

c) Messenger - 19 strand high TENSILE GALVANISED WIRESd) Screw / Nut & Plain washer – Stainless steel Grade A2

Minimum TO BS 6105ii) Component Specification:

Screw - GRADE 80 TO BS 6105

PLAIN WASHER – Form `A’ TO BS 4320Spring washer - Form `B’ TO BS 4464

NUT - Grade 70 TO BS 6105iii) Protection COATINGS:

Spring washer - HOT DIPPED GALVANISED TO BS 729Messenger Cable - GALVANIZED TO BS 443 / DMS 003

iv) Assembly Marking:Clamp - make, D B 0.5, 28.3 – 29.8

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Keeper - 50 Nm, Mfg, date, code.

v) Installation Torque - 50 Nm

TENSION ASSEMBLY SYSTEM FOR ADSS CABLE.

Each set of Tension Assembly System shall consist the following Items.

1) Dogbone Vibration Damper DB 0.5 - 1 (GLV STL/Z1NC)

2) 125 KN Shackle - 2 Nos. (GALV STL)

3) Flat link 28/86 70 mm centers - 1 No. (GALV STL)

4) Thimble clevis Assembly 125 KN MFL- 1 No. (MCI)

5) Dead end for ADSS Cable - 1 No. (GALV STL)

6) Reinforcing Rod set - 1 No (GALV STL)

NOTES:

1. Reinforcing Rod set :

a) It should be colour marked at two positions for reversibility.

Colour mark indicating the Installation position for Dead end.

b) Rods shall be factory assembled into four sub-sets to reduce mis alignment errors and tospeed up the Installation.

c) Left hand lay.

2. Heliformed Dead end:

a) Right hand lay

b) It should be colour marked at Cross – over position

3. Damper placement shall be calculated as per wind speed.

SPECIFICATION:

1. REINFORCING ROD SET.

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Fitting range - 16.3 to 17.3 mm

Material - Galvanised Steel

Rod Dia - 2.35 mm +/- 0.05 mm

No. of Rods - 20 (Sub set 5-5-5-5) glued and Gritted.

Formed Diameter - 16.60 mm +/- 0.2 mm

Pitch Length - 124 mm +/- 5.0 mm

Lay - Left hand

Colour Code - Black in centre , Red ; 300 mm from each end.

2. DEAD END:

Fitting range - 16.3 to 17.3 mm + Reinforcing Rod set

Material - Galvanised steel

Rod Dia - 3.66 mm +/- 0.05 mm

No. of Rods - 9 Glued and Gritted.

Formed Diameter - 24.0 mm +/- 0.2 mm

Pitch Length - 155 mm +/- 5.0 mm

Lay - Right hand

Loop Dia - 76mm

Colour Code - Red

3. Thimble clevis Assembly 125 KN MFC Rating.

a) Split Pin - 1 (St. steel)

b) 19mm clevis Pin - 1 (GALV STL)

c) Thimble clevis body - 1 (Cast Iron)

NOTE:

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i) Body to be permanently marked as

UCT - 100 (On One face)40000 LBS - (On Opposite face)

ii) Minimum Failing load - 125 KN

iii) Galvanising TO ASTM A 153

iv) Material Specification:

a) Body Casting - Ductile cast Iron Grade 654512 TO ASTM A 536

b) SPLIT PIN - Stainless steel Grade 321 S 31

c) Clevis Pin - Steel Grade 080 M 40

4. Flat link 28/86 70 centres:

i) Marketing - TO BE stamped with details

ii) Material - Steel Grade 43A TO BS 4360Galvanised TO BS 729

iii) Minimum failing load - 125 KN

iv) Galvanising TO BS 729

v) Specification applicable - BS 3288

5 125 KN SHACKLE

i) M 20 X 90 BOLT C/W FN

Thread Length 27 mm Min - 2 No.(GALV. STL)

ii) SPLIT PIN 5 X 32 LG - 2 No.s ( S T STL)

iii) BODY - 1No.(GALV. FORGED STEEL)

Specification:

a) Material - Galvanised Forged Steel

b) COMPONENT SPECIFICATION_

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BOLT – GRADE 8.8 TO BS 3692FULL NUT - GRADE 8 TO BS 3692

SPLIT PIN - 5 X 32 LG TO BS 1574

C) Finish - Galvanising TO BS 729

d) All sharp Edges shall be removed before Galvanising

e) Minimum failing load - 125 KN

f) Markings - All markers with full detail is to be mentioned.

M 20 X 90 LONG CLEVIS BOLT WITH NUT AND SPLIT PIN HOLE:

Materials - Bolt Grade : 8.8 Nut Grade : 8

Component Specification:

BOLT AND NUTS TO BS 3692.

v) The Bolt shall be fitted with a nut which must run down, finger tight only, to clear theSPLIT PIN HOLE after Galvanising.

vi) Galvanizing TO BS 729

ACCEPTANCE TESTS

1. Acceptance Tests on complete fibre optic cable

a.

Dimensional Check b. Lay length measurementc. Crush test

d. Impacte. Temperature cycle test

2. Acceptance Tests on Optical Fibrea. Attenuation variation

b. Attenuation at the water peak c. Attenuation with bending

d. Temperature cycling3. Acceptance Tests On Metallic Wire (As Applicable)

a. Tensile test b. Elongation test

c. D.C resistance testd. Thickness of aluminum (For AS WIRES)

e. Twist test (FOR AS wires)4. Acceptance Test On Fittings and Accessories

Suspension Assemblya. Visual EXAMINATION AND dimensional verification

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b. Clamp slip strength testc. MECHANICAL STRENGTH test on EACH COMPONENT

5. Dead-end Assembly

a) Visual examination and dimensional Verification b) Clamp slip strength test

c) Mechanical strength test o each component

6. Grounding wire for clamps

a) Visual examination an dimensional verification b) Tensile test

7. Structure Mounting Clamp

a) Visual examination and dimensional verification

b) Clamp fit testc) Clamp strength test

8. Vibration Damper

a) Visual examination and dimensional verification

b) Verification of resonance frequenciesc) Clamp slip test

d) Clamp bolt torque teste) Strength of the messenger cable

f) Mass pull off testg) Galvanizing test

1. On damper masses

2. On messenger cable9. Routine Tests

a) Measure the optical loss of each fibre at 1550 nm.

Measure the mode field diameter, the chromatic dispersion, core diameter,and cladding diameter of each fibre

1. Tests during Manufacture.

a) Perform optical fiber tests mutually agreed to by the Contractor and theAPTRANSCO in accordance with the Quality Assurance Program.

2. Type test samples.

a) The contractor shall supply material for sample selection only after qualityassurance plan approval by the APTRANSCO. The sample material shall be

manufactured strictly in accordance with the approved Quality Assurance Plan.

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b) The contractor shall offer three drums (reels) of each type of fibre-optic cable.The APTRANSCO will choose which reel of each cable type to be used for the

Type testing.1. Additional Tests.

a) APTRANSCO reserves the right to require the Contractor to perform, at APTRANSCO’s expense, any other reasonabletest(s) at the Contractor’s premises, on site, or elsewhere in

addition to the aforementioned Type. Acceptance, Routine, orManufacturing tests to assure APTRANSCO of specification

compliance.

b) APTRANSCO also reserves the right to require any retesting

of previously approved tests at APTRANSCO expenseHowever if the retest(s) reveal noncompliance to the

specification, the Contractor shall bear the expense for theretesting and remedial action.

2. Receiving Inspection (RIT)

a) Upon material receipt by APTRANSCO, the contractor shal

perform witnessed acceptance tests to verify that opticalspecification are satisfactory and that no damage occurred during

handling and shipment.. Testing may be performed with either anOTDR or a light source and power meter.

b) Should evidence of specification non-compliance arise, it is

incumbent on the Contractor to either prove compliance in writingor to replace all defective material.

3. Site Acceptance Tests.

The Contractor shall be responsible for the submission of all equipment for site tests and

inspection as required by APTRANSCO. During the course of erection APTRANSCOshall have full access for inspection of the progress of the work and for checking

workmanship and accuracy as may be required. On completion of the work prior tocommissioning, all equipment shall be tested to the satisfaction of APTRANSCO to

demonstrate that it is suitable for commercial operation.

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Commissioning Tests

Commissioning tests shall be carried out in the presence of, and to the satisfaction ofAPTRANSCO by the qualified technical representatives of the Contractor. The

Contractor shall perform the following commissioning tests:

a. End-to-end optical fibre continuity and attenuation measurement. Performthis test from the equipment end connector at one site to the equipment end

connector at the remote site. Test each fibre in the bundle both directionsProvide to APTRANSCO OTDR printouts plus Rayleigh scatter diagrams per

the test report requirements. b. Bit error-count and Bit-Error-Rate (BER) record for 360 consecutive hours on

two fibres in the bundle selected by APTRANSCO. Sample the BER at 30-minute intervals. Test each fibre and record the data in one direction only

The data rate shall be 8.448 Mb/s. Provide to APTRANSCO BER equipment

At least two (2) personnel of Contractor who have attended the Contractor’s trainingcourse will be available to assist the supplier in performing the commissioning tests. All

test results shall be recorded on hard copy and also on magnetic media. All the testequipment required for commissioning shall be provided by the contractor and removed

from the site upon completion.

The contractor shall satisfy himself as to the correctness of all connections made betweenAPTRANSCO plant and equipment supplied as part of the contract.

All equipment shall be tested on site under the conditions in which it will normally work

with additional arrangements as required to provide the capacity for working under theworst combination of conditions.

The commissioning tests shall be exhaustive and shall demonstrate that the overall

performance of the contract works satisfies every requirement specified. The tests to becarried out shall be a repeat of the FAT and the total system performance test.

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TABLE OF CONTENTS

TYPE TESTS ON FIBRE OPTIC CABLE

1.1 Dimensional check 1.2 Lay length measurement

1.3 Water penetration test1.4 Seepage of flooding compound

1.5

Tensile performance test1.6 D.C. resistance test

1.7 Crush test1.8 Impact test

1.9 Bend test1.10 Strain margin test

1.11 Aeolian vibration test1.12 Lightning test

1.13 Temperature cycle test1.14 Sheave test

2. Acceptance tests on optic fibre3. Attenuation variation with wavelength

4. Attenuation at the water peak 5. Attenuation with bending

2. Temperature cycling7. Type test on fibre optic cable fitting

8 visual examination and dimensional verification9. Mechanical strength test for suspension / tension assembly

10 clamp slip strength test for suspension assembly11 slip strength test of tension clamp

12 grounding clamp band structure mounting clamp fit test13 structure mounting clamp strength test

14. Grounding wire for clamps15. Visual examination and dimensional verification

16. Tensile test3.3.1. Type test on vibration damper

3.3.1.0 Visual examination and dimensional verification3.3.1.1.Dynamic characteristics test

3.3.1.2.Vibration analysis3.3.1.3.Clamp slip and fatigue tests

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3.3.1.4.Test set up3.3.1.5.Clamp slip test

3.3.1.6.Fatigue test3.3.1.7.Verification of resonance frequency

3.3.1.8.Clamp bolt torque test

3.3.1.9.Strength of the messenger wire3.3.1.10.Mass pull off test3.3.1.11.Galavinising test

3.1.0. TYPE TESTS ON FIBRE OPTIC CABLE

3.1.1. DIMENSIONAL CHECK

The individual strands and optical core shall be dimensionally checked to ensure that they

conform to the requirements of this specification.

3.1.2.

LAY LENGTH MEASUREMENTThe lay length shall be checked to ensure that they conform to the requirements of this

specification

3.1.3. WATER PENETRATION TEST

THE TEST SHALL BE CONDUCTED IN ACCORDANCE WITH IEC 794-1-

F5.HOWEVER, THE TEST MAY BE CONDUCTED UNDER TESTING LAB

AMBIENT ATMOSPHERIC CONDITIONS

6.4 SEEPAGE OF FLOODING COMPOUND

The test shall be conducted in accordance with eia-455-81a except that a preconditioningcycle as given below may be used. The sample shall be prepared as per method-a of eia-

455-81a. The unprepared end may be sealed. The filling and flooding compound shallnot flow (drip or leak) at 65* c.

Preconditioning cycle

A clean glass dish shall be placed directly under the test specimen. The sample shall be

suspended vertically for 72 hours at 65*c +/- 2*c. After preconditioning, a small amount(less than 1% of the weight of the sample before testing) of mostly clear oil may be

present. Presence of a greater amount of material in the glass dish shall constitute failure

3.1.4. TENSILE PERFORMANCE TEST.

The test shall be conducted on a sample of sufficient length in accordance with IEC: 794-1-E1. There shall not be any change in attenuation up to 90% of RTS of fibre optic cable

The load shall be increased at a steady rate up to rated tensile strength and held for one(1) minute. The fibre optic cable sample shall not fail during the period. The applied

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load shall then be increased until the failing load is reached and the value recorded.

3.1.5. D.C.RESISTANCE TEST

On a fibre optic cable sample of minimum 5 m length, two contact clamps shall be fixed

with a predetermined bolt torque. The resistance shall be measured by a Kelvin double bridge by placing the clamps initially zero meters and subsequently one meter apart. Thetests shall be repeated at least five times and the average value recorded after correcting

at 20* C.

3.1.6. CRUSH TEST

The crush test shall be carried out on a samples of approximately one (1) meter long inaccordance with IEC:794-1-E3. A load equal to 1/3 the weight of a 400- meter length of

fibre optic cable shall be applied for a period of 10 minutes. A permanent or temporaryincrease in optical attenuation value greater than 0.1 d B change in sample shall

constitute failure. The load shall be further increased in small increments until themeasured attenuation of the optical wave-guide fibres increases and the failure load

recorded along with results.

3.1.7. IMPACT TEST

The impact test shall be carried out in accordance with IEC: 794-1-E4. Five separate

impacts of 0.1-0.3 kgm shall be applied. The radius of the intermediate piece shall be thereel drum radius ±10%. A permanent or temporary in optical attenuation value greater

than 0.1 d B change in sample shall constitute failure.

3.1.8. BEND TEST

The short term and long term bend tests shall be conducted in accordance with procedure2 in IEC: 794-1-E11 to determine the minimum acceptable radius of bending without any

increase in attenuation or any other damage to the fiber optic cable core such as birdcaging, deformation, kinking and crimping.

3.1.9. STRAIN MARGIN TEST

The test shall be conducted on a sample of sufficient length to ensure that the sample

specimen under strain is a minimum of 10 meters long and that the optical fibre testspecimen under strain is a minimum of 100 meters long. The test sample shall be

terminated at both ends prior to strain in a manner such that the optical fibers cannotmove relative to the fibre optic cable. Strain gauges shall be attached to the sample

surface. Changes in the fibre length may be measured using laser and optical receiverThe propagation delay caused by the change in fibre length may be determined by using

both a pulse generator and digital storage oscilloscope, or by measuring the phase shift ofa modulated signal.

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Fibre attenuation at 1550 nm shall be monitored on the same fibre or on another fibre

using a laser and power meter. The sample is stretched while measuring tensile loadssample strain, fibre attenuation, and fibre length. The strain margin is defined as the

percent elongation of the fibre optic cable at which the attenuation of the optical wave-

guide fibres has increased above the attenuation measured before the start of each test.

3.1.10. AEOLLAN VIBRATION TEST

The general arrangement to be used for the Aeolian vibration tests and the support details

shall be as per Appendix B of IEEE 1138-1994. The end abutments are used to load andmaintain tension in the fibre optic cable. The test section is contained between the two

intermediate abutments. The fibre optic ground wire to be tested should be cut to asufficient length beyond the intermediate abutments to allow removal of the fibre optic

cable outer strands and to allow access to the optical fibres. Suitable dead-endassemblies shall be installed on the sample to fit between the intermediate abutments

The test sample shall be terminated at both ends prior to tensioning in a manner such thatthe optical fibres cannot move relative to the fibre optic cable. A dynamometer, load cel

or other devices should be used to measure sample tension. Some means should be provided to maintain constant tension to allow for temperature fluctuation during the

testing. The sample should be tensioned to approximately 25% ± 1% of the rated tensilestrength. The active span length of the test sample (dead-end to dead-end) shall be

approximately 30 meters with a suitable suspension assembly located approximately 2/3of the distance between the dead-end assemblies. It shall be supported at a height such

that the static sag angle of the sample to horizontal at the suspension point should be1.5±0.5 degrees. An electronically controlled shaker shall be used to excite the sample in

the vertical plane. The shaker should be located in the span to allow for a minimum ofsix vibration loops between the suspension assembly and the shaker.

The optical fibres shall be connected to each other by means of fusion splices. Optical

measurements shall be made using a light source. The laser source shall be connectedthrough an optical splitter to one end of the test fibre. The splitter shall divide the optical

signal into two parts. One part shall be fed directly into an optical power meter. Theother part shall be fusion spliced into one free end of the test fibre. A second optica

power meter shall be placed on the returning end of the test fibre such that signals fromthe optical source shall go through the test field on each of the test fibres and then be read

at this second meter. The output of optical power meter shall be monitored using at leasttwo different methods. The attenuation shall be measured and recorded on a continual

basis during the tests.The sample shall be subjected to more than 100 million cycles. The test excitation

frequency shall be equal to and maintained at the nearest resonant frequency produced bya 4.5 m/sec wind (i.e. frequency = 830 / diameter of fibre optic cable in mm). The free

loop peak-to-peak antinode amplitude shall be maintained at a level equal to one-third thediameter of the fibre optic cable.

In the initial stages the test span requires continuous attention and recordings should be

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taken approximately every 15 minutes until the test span is stabilized. After the test spanhas stabilized, readings should be taken every hour. A final optical measurement shall be

taken at least two hours after the completion of the vibration test.

Any damage to any component of the test sample or permanent or temporary increase in

attenuation greater than 1.0 d B /test fibre km shall constitute a failure.

A second optical power meter shall be placed on the returning end of the test fibre such

that signal from the optical source shall go through

3.1.11. LIGHTNING TEST.Tension equal to 20% of the Fibre optic cable RTS shall be applied to a sample with

minimum length of 30 m of cabled fibres and two separate 4/10 micro second currentimpulses each having a peak value of 150 KA and a negative polarity shall be applied

through a 1 cm gap. The attenuation during the tests shall be continuously measuredAfter the tests the sample shall be visually inspected. Any increase in optical wave-guide

fibres attenuation measured at 1550 nm shall constitute failure.

3.1.12. TEMPERATURE CYCLE TEST

The test shall be conducted in accordance with IEC:794-1-F1 with the following cycle

parameters.

a. Low temperature (TA) = -400C.

b. high temperature (TB) = +850C

c. Exposing period (tl) = 1 hour The test shall be repeated ten times and the optical wave-guide fibres attenuation at 1550

nm shall be recorded. The maximum variation of the attenuation shall not exceed theBidder’s quoted values.

3.1.13. SHEAVE TEST

The general arrangement for the sheave test shall be as per Appendix D of IEEE 1138-1994-D. The test shall be performed on a sample of approximately 21 m long. Dead-end

fittings shall be clamped approximately 3 m in from each end of the test sample, leavingabout 15 m of test length between them. The optical fibres shall be connected to each

other by means of fusion splices.

Optical measurements shall be made using a light source. The laser source shall beconnected through an optical splitter to one end of the test fibre. The splitter shall divide

the optical signal into two parts. One part shall be fed directly into an optical powermeter. The other part shall be fusion spliced into one free end of the test fibre. A second

optical power meter shall be placed on the returning end of the test fibre such that signalfrom the optical source shall go through the test field on each of the test fibres and then

be read at this second meter. The output of optical power meter shall be monitored usingat least two different methods. The attenuation shall be measured and recorded on a

continual basis during the tests.

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The sample shall be led through a sheave. The minimum recommended sheave diameteris 40 X fibre optic cable diameter. The sample shall be pulled at one dead end at 25% of

its rated tensile strength at a deflection angle of 30+/-2 degrees. The method ofattachment. While not rigid, shall limit the amount of twist that could occur at the dead

end. A dynamometer and a swivel shall be installed between the yoke and the other dead

end. A 2 m minimum length of the fibre optic cable test sample shall be pulled 70 timesforward and backward through the sheaved (35 times in each direction). Before the first pull, the beginning, midpoint, and end of this length shall be monitored continuously

during the test. After the test is completed, the metallic strands shall be removed and thetest section, and the protective tube diameter shall be measured at the marked points and

at the one-third points between each marked point.

Any significant damage to the fibre optic cable or fibre optic unit at any points abovedeformation limits of 0.50 mm shall constitute failure. A permanent increase in optical

attenuation greater than 1.0 d B /test fibre km shall constitute failure.

3.2.0.ACCEPTANCE TESTS ON OPTIC FIBRE.

3.2.1 ATTENUATION VARIATION WITH WAVELENGTH

The measurement shall be made in accordance with EIA-455-78; the spectral width of thesource shall be less than 10 nm.

3.2.2 ATTENUATION AT THE WATER PEAK

IEEE The test shall be made in accordance with 1138-1994.

3.2.3 ATTENUATION WITH BENDING

The test shall be made in accordance with clause 4.2.1.3 of IEEE 1138-1994.

3.2.4 TEMPERATURE CYCLING

The test shall be made in accordance with EIA-455-3, using test condition A, -550 C to

850C.

3.3.0 TYPE TEST ON FIBRE OPTIC CABLE FITTINGS.3.3.1.0 Visual Examination and Dimensional Verification.

The individual components shall be visually and dimensionally checked to ensure that

they conform to the requirements of this Specification.

3.3.1.1 MECHANICAL STRENGTH TEST FOR SUSPENSION / TENSION ASSEMBLY.The suspension assembly / tension assembly (excluding tension clamp) shall be subjected

to a load equal to 50% of the specified minimum ultimate tensile strength (UTS) whichshall be increased at a steady rate to 67% of the minimum UTS specified. This load shall

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be held for five minutes and then removed. After removal specified. , the componentsshall not show any visual deformation and it shall be possible to disassemble them by

hand. Hand tools may be used to loosen the nuts initially. The assembly shall then bereassembled and loaded to 50% of UTS and the load shall be further increased at a steady

rate until the specified minimum UTS is reached and held for one minute. No fracture

should occur during this period. The applied load shall then be increased until the failingload is reached and the value recorded.

3.3.1.2 CLAMP SLIP STRENGTH TEST FOR SUSPENSION ASSEMBLY

The suspension assembly shall be vertically suspended by means of a flexible attachment.

A suitable length fibre optical cable shall be fixed in the clamps. The clamp slip strengthat various tightening torques shall be obtained by gradually applying the load at one end

of the fibre optic cable. The clamp slip strength Vs torque curve shall be drawn. Theclamp slip strength at the recommended tightening torque shall be more than 12 kN but

less than 17 k N.

3.3.1.3 SLIP STRENGTH TEST OF TENSION CLAMPTension clamps shall be fitted on a 5 m length of fibre optic cable on both ends. The

assembly shall be mounted on a tensile testing machine and anchored in a manner similarto the arrangement to be used in service. A tensile load of 50% of the specified breaking

load of the fibre optic cable shall be applied and the sample shall be marked in such away that movement relative to the fitting can easily be detected. Without any subsequent

adjustment of the fitting, the load shall be steadily increased to 95% of the specified breaking load and maintained for one minute. There shall be no movement of the fibre

optic cable relative to the fitting during this one-minute period and no failure of thefitting also.

3.3.1.4 GROUNDING CLAMP AND STRUCTURE MOUNTING CLAMP FIT TEST

For structure mounting clamp, one series of tests shall be conducted with two fibre opticcables installed, one series of tests with one fibre optic cable installed in one groove, and

one series of tests with one fibre optic cable in the other groove. Each clamp shall beinstalled including clamping compound as required on the fibre optic cable. The nut shal

be tightened on to the bolt by using torque wrench with a torque of 5.5 kgm or supplier’srecommended torque and held for 10 minutes. After the test remove the fibre optic cable

and examine all its components for distortion, crushing or breaking. Also the fibre opticcable shall be checked to ensure free movement within the core using dial calipers to

measure the diameter of the core tube. The material shall be defined as failed if anyvisible distortion, crushing, cracking or breaking of the core tube is observed or the fiber

optic cable within the core tube is not free to move or when the diameter of the core tubeas measured at any location in the clamped area is more than 0.5 mm larger or smaller of

the core diameter as measured outside the clamped area.

3.3.1.5 STRUCTURE MOUNTING CLAMP STRENGTH TEST

The clamp and mounting assembly shall be assembled on a vertical 200 mm x 200 mmangle and a short length of fibre optic cable installed. A vertical load of 200 kg shall be

applied at the end of the mounting clamp and held for 5 minutes. Subsequently, the loadshall be increased to 400 kg and held for 30 seconds. Any visible distortion, slipping or

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breaking of any component of the mounting clamp or assembly shall constitute failure.

3.3.2.0 GROUNDING WIRE FOR CLAMPS.

3.3.2.1 VISUAL EXAMINATION AND DIMENSIONAL VERIFICAITON

The individual components shall be visually and dimensionally check to ensure that they


3.3.2.2 TENSILE TEST

The grounding wire shall withstand the guaranteed minimum breaking load by thesupplier.

3.3.3.0 TYPE TEST ON VIBRATION DAMPER

3.3.3.1 VISUAL EXAMINATION AND DIMENSIONAL VERIFICAITON

The individual components shall be visually and dimensionally check to ensure that they


3.3.3.2 DYNAMIC CHARACTERISTICS TESTThe damper shall be mounted with its clamp tightened with torque recommended by the

manufacturer on shaker table capable of simulating sinusoidal vibrations for AeolianVibration frequency band ranging from 10 to 60 Hz. The damper assembly shall be

vibrated vertically with a +/- 1 mm amplitude from 5 to 15 Hz frequency and beyond 15Hz at 0.5 mm to determine following characteristics with the help of suitable recording

instruments:a. Force Vs frequency

b. Phase angle Vs frequencyc. Power dissipation Vs frequency

The Force Vs frequency curve shall not show step peaks at resonance frequencies anddeep troughs between the resonance frequencies. The resonance frequencies shall be

suitably spread within the Aeolian vibration frequency band between the lower and upperdangerous frequency limits determined by the vibration analysis of fibre optic cable

without dampers.The above dynamic characteristics test on five dampers shall be conductor.

3.3.3.3 VIBRATION ANALYSIS

The vibration analysis of the fibre optic cable shall be done with and without damperinstalled on the span. The vibration analysis shall be done on a digital computer using

energy balance approach. The following parameters shall be taken into account for the purpose of analysis.

a. The analysis shall be done for single fibre optic cable

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Without Armour rods. The tension shall be taken as 35 kN for a span rangingfrom 100 m to 1100 m.

b. The self-damping factor and flexural stiffness (E1) for fibre optic cable shall becalculated on the basis of experimental results. The details to experimental

analysis with these data should be furnished.

c. The power dissipation curve obtained from Dynamic Characteristics Test shall beused for analysis with damper.d. Examine the Aeolian Vibration level of the fibre optic cable with and without

vibration damper installed at the recommended location or wind velocity rangingform 0 to 30 km per hour, predicting amplitude, frequency and vibration energy

input.e. From vibration analysis of fibre optic cable without damper, antinode vibration

amplitude and dynamic strain levels at clamped span extremities as well asantinodes shall be examined and thus lower and upper dangerous frequency limits

between which the Aeolian vibration levels exceed the specified limits shall bedetermined.

f.

From vibration analysis of fibre optic cable with damper/dampers installed at therecommended location, the dynamic strain level at the clamped span extremities,

damper attachment point and the antinodes on the fibre optic cable shall bedetermined. In addition to above damper clamp vibration amplitude and antinode

vibration amplitudes shall also be examined.The dynamic strain levels at damper attachment points; clamped span extremities

and antinodes shall not exceed the specified limits. The damper clamp vibrationamplitude shall not more than that of the specified fatigue limits.

3.3.3.4 CLAMP SLIP AND FATIGUE TESTS.

3.3.3.5 TEST SET UP

The clamp slip and fatigue tests shall be conducted on a laboratory set up with a

minimum effective span length of 30 m. The fibre optic cable shall be tensioned at 15 k N and shall not be equipped with protective Armour rods at any point.

Constant tension shall be maintained within the span by means of lever arm arrangement.

After the fibre optic cable has been tensioned, clamps shall be installed to support thefibre optic cable at both ends and thus influence of connecting hardware fittings are

eliminated from the free span. The clamps shall not be used for holding the tension onthe fibre optic cable. There shall be no loose parts, such as suspension clamps, U Bolts

on the test span supported between clamps mentioned above. The span shall be equippedwith vibration inducing equipment suitable for producing steady standing vibration. The

inducing equipment shall have facilities for stepless speed control as well as steplessamplitude arrangement. Equipment shall be available for measuring the frequency

cumulative number of cycles and amplitude of vibration at any point along the span.

3.3.3.6 CLAMP SLIP TEST.The vibration damper shall be installed on the test span. The damper clamp, after

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tightening with the manufacturer’s specified tightening torque, when subjected to alongitudinal pull of 2.5 k N parallel to the axis of fibre optic cable for a minimum

duration of one minute shall not slip, i.e. the permanent displacement between fibre opticcable and clamp measured after removal of the load shall not exceed 1.0 mm. The load

shall be further increased until the clamp starts slipping. The load at which the clamp

slips shall not be more than 5 k N.

3.3.3.7 FATIGUE TEST.

The vibration damper shall be installed on the test span with the manufacturer’s specified

tightening torque. It shall be ensured that the damper shall be kept minimum three loopsaway from the shaker to eliminate stray signals influencing damper movement.

The damper shall then be vibrated at the highest resonant frequency of each damper

mass. For dampers involving torsional resonant frequencies, tests shall be done attorsional modes also in addition to the highest resonant frequencies at vertical modes.

The resonance frequency shall be identified as the frequency at which each damper mass

vibrates with the maximum amplitude on itself. The amplitude of vibration of thedamper clamp shall be maintained not less than +/- 25/f mm where f is the frequency in

Hz.

The test shall be conducted for minimum ten million cycles at each resonant frequencymentioned above. During the test, if resonance shift is observed, the test frequency shall

be tuned to the new resonant frequency.

The clamp slip test as mentioned herein above shall be repeated after fatigue test withoutretorquing or adjusting the damper clamp, and the clamp shall withstand a minimum load

equal to 80% of the slip strength for a minimum duration of one minute.

After the above tests, the damper shall be removed from fibre optic cable and subjected todynamic characteristics test. There shall not be any major deterioration in the

characteristics of the damper. The damper then shall be cut open and inspected. Thereshall not be any broken, loose, or damaged part. There shall not be significant

deterioration or wear of the damper. The fibre optic cable under clamp shall also be freefrom any damage.

For purposes of acceptance, the following criteria shall be applied:

a. There shall not be any frequency shift by more than +/- 2 Hz for frequencies

lower than 15 Hz and +/- 3 Hz for frequencies higher than 15 Hz.

b. The force response curve shall generally lie within guaranteed % variation inreactance after fatigue test in comparison with that before fatigue test by the

supplier.

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c. The power dissipation of the damper shall not be less than guaranteed % variationin power dissipation before fatigue test by the supplier. However, it shall not be

less than minimum power dissipation, which shall be governed by lower limits ofreactance and phase angle.

3.3.3.8 VERIFICATION OF RESONANCE FREQUENCIES.

The damper shall be mounted on a shaker table and vibrated at a damper clamp

displacement of±0.5 mm to determine the resonance frequencies. The resonance shall bevisually identified as the frequency at which damper mass vibrates with maximum

displacement on itself. THE resonance frequency thus identified shall be compared withthe guaranteed value. A tolerance±1 Hz at a frequency lower than 15 H z and ± 2 Hz at

a frequency higher than 15 Hz only shall be allowed.

3.3.3.9 CLAMP BOLT TORQUE TEST

The clamp shall be attached to a section of the fibre optic cable. A torque of 150 percent

of the manufacturer’s specified torque shall be applied to the bold. There shall be nofailure of component parts.

3.3.3.10 STRENGTH OF THE MESSENGER CABLE

The messenger cable shall be fixed in a suitable tensile testing machine and the tensile

load shall be gradually applied until yield point is reached. The load shall be no less thanthe value guaranteed by the Bidder.

3.3.3.11 MASS PULL OFF TEST

Each mass shall be pulled off in turn by fixing the mass in one jaw and the clamp in theother of a suitable tensile testing machine. The longitudinal pull shall be applied

gradually until the mass begins to pull out of the messenger cable. The pull off loadsshall not be less than the value guaranteed by the Bidder.

3.3.3.12 GALVANISING TEST

The test shall be carried out as per IS: 2486 (Part-1) except that both uniformity of zinccoating and standard preece test shall be carried out, and the results obtained shall satisfy

the requirements of this specification.

3.3.3.13 SHORT CIRCUIT TEST.

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The test shall be conducted on a sample of minimum length of 30 m tensioned at 20% ofUTS (ultimate tensile strength). The fibres shall be connected to each other by means of

fusion splices. The splices must be made and placed in such a manner that they are notwithin the test field, nor should they be subjected to vibration, sudden stress or

temperature change from fault current pulses, weather conditions or handling. Devices

should be attached to prevent movement of the core assembly relative to the strands. Inaddition, the OPGW should be terminated and the core assembly shall be brought out ofthe strands at least 5 m away from the current field.

A laser source shall be connected through an optical splitter to one end of the test fibre.

The splitter shall divide the optical signal into two parts. One part shall be fed directlyinto an optical power meter. The other part shall be fusion spliced into one free end of

the test fibre. the test field on each of the test fibres and then be read at this secondmeter. Any necessary power sources for these shall be from a different power supply

than that which feeds that fault current apparatus. The output of optical power metershall be monitored using at least two different methods. In addition, OTDR

measurements could be made before and after the test to verify the location(s) of anyattenuation increases. The core and ADSS surface temperatures plus attenuation shall be

measured and recorded on a continual basis during the tests and for 30 minutes after eachtest.

Ten current pulses shall be applied with the ADSS being allowed to cool to within 5* C

of the ambient temperature between each pulse. The fault current value shall be derivedfrom the specified ADSS PT ratings. Each current pulse shall be applied with ful

asymmetry.

An increase in optical wave-guide fibres attenuation greater than 1.0 d B test fibre km at1550 nm shall constitute failure. Birdcaging or breaking of the conductor strands shall

also constitute failure.

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Annexure - I

GUARANTEED TECHNICAL PARTICULARS OF ADSS CABLE & HARDWARE

ACCESSORIES

S.No. Description Units Parameters

1 Make & Model

2 No. of Fibres in ADSS3 Mode

4 Buffer type

5 Buffer tube diameter

6 Buffer tube material

7 No. of buffer tubes

8 No. of fibres per tube

9 Identification/numbering of

individual tubes

10 No. of empty tubes( if any)

11 Filling material

12 Inner Strength member13 Peripheral Strength

member

14 Binding yarn/tape

15 Approximate outside

diameter

16 Cable diameter

17 Cable cross section area

18 Jacket non- circularity

19 Rip cord provided

20 Fully compliant with IEEE

P1222

21 Span length

22 Fibre Cable drum length

MECHANICAL PROPERTIES OF CABLE

1 Max. Tensile Strength kN

2 Fibre Strain margin

3 Weight Kg/km

4 Crush strength

5 Modulus of Elasticity kg/Sq.mm

6 Minimum bending radius Mm

` THERMAL PROPERTIES OF CABLE1 Coefficient of inner

expansion

Per ºC

2 Coefficient of expansion

Cladding Core

Per ºC

3 Nominal operating

temperature range

4 SC current transient peak

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temperature

5 Maximum allowable

temperature for lightning

strike

6 Available length per spool

Max.Min.

7 Splice loss (Max. & Min.) db

8 Operating Temperature

range

9 Expected Cable Life

DUAL - WINDOW SINGLE MODE FIBRES

1 Fibre manufacturer

2 Fibre production method

3 Core diameter µm

4 Core non circularity %

5 Cladding diameter µm 6 Core Clad Concentricity

error

µm

7 Cladding non-circularity

8 Protective coating type &

Material

Primary

Secondary

9 Protective coating diameter µm

10 Coating concentricity

11 Colour coding scheme

compliant withEIA395A/IEC3047

12 Attenuation Coefficient

@1310nm

@1550nm

dB/km

dB/km

13 Attenuation variation with

Wavelength (+/- 25nm)

Temperature

dB/km

14 Nominal Mode field

Diameter @1310nm

@1550nm

µm

15 Mode field Diameterdeviation @1310nm

@1550nm

µm

16 Mode field non circularity %

17 Chromatic dispersion

Coefficient

@1310(1285- 1330) nm

@ 1310(1270-1340) nm

µm

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@ 1550(1525- 1475) nm

18 Zero dispersion wavelength nm

19 Zero dispersion slope Ps/nm² -km

20 Cut – off Wavelength

21 Refractive Index

22 Refractive Index profile23 Cladding design

24 Numerical aperture

25 Bandwidth distance product MHzkm

26 Bend performance dB/km

Signature of the bidder

GUARANTEED PARTICULARS FOR FIBRE DISTRIBUTION PANEL

S. No. Description Units Particulars

1 Make & model

2 DIMENSIONS (H X W X D)

3 WEIGHT

4 COLOUR & FINISH

5 CABLE GLANDING

6 LOCKING ARRANGEMENTS:

7 INSTALLATION CLEARANCES:

8 FRONT ACCESS:

9 REAR ACCESS

TOP*BOTTOM*SIDES

10 TOTAL NO. OF OPTICAL

COUPLINGS:11 DEGREE OF PROTECTION AS

PER IS-2147

12 METHODS FOR MOUNTING

CABLE GLANDING

13 MAXIMUM NO. OF CABLES

THAT CAN BE ACCOMODATED

14 NO.OF FIBRE TRAYS

15 NO. OF FIBRES PER TRAY

Signature of the bidder

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ANNEXURE – A

MANUFACTURER GUARANTEED TECHNICAL PARTICULARS OF TENSION

CLAMP ASSEMBLY

( TO BE FILLED BY THE BIDDER )

ITEM DESCRIPTION UNIT1. MANUFACTURER’S NAME & ADDRESS

2. TYPE

3. MINIMUM SLIP LOAD KN

4. LENGTH (NOMINAL)

A) REINFORCING RODS MMB) DEAD-END MM

5. WEIGHT (NOMINAL)

A) REINFORCING RODS KG

B) DEAD-END KG

6. BREAKING STRENGTH (MINIMUM) K N

7. WIRE SIZE (NOMINAL)

A) REINFORCING RODS MM

B) DEAD-END MM

8. MATERIAL

A) REINFORCING RODSB) DEAD-END

SIGNATURE OF THE BIDDER

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ANNEXURE - B

MANUFACTURER GUARANTEED TECHNICAL PARTICULARS OF VIBRATION

DAMPER

( TO BE FILLED BY THE BIDDER )

ITEM DESCRIPTION UNIT

1. MANUFACTURER’S NAME & ADDRESS

2. TYPE ---

3. TOTAL WEIGHT (NOMINAL) KG

4. WEIGHT OF EACH DAMPER KG

5. MATERIAL OF DAMPER WEIGHT -----

6. CLAMP MATERIAL ---

7. MESSENGER CABLE MATERIAL ---

8. NO. OF STRANDS IN MESSENGER CABLE ---

9. BREAKING STRENGTH OF MESSENGER CABLE K N

(MINIMUM)

10. RESONANCE FREQUENCIES (NOMINAL)A) first frequency HZ

B) second frequency HZC ) Third frequency Hz

D) Fourth Frequency HzE) Fifth Frequency Hz

11. Minimum Slip Strength of Damper clamp

a) Before fatigue test k N b) After fatigue test k N

12. Clamp Tightening Torque (Nominal) Nm

SIGNATURE OF THE BIDDER.

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ANNEXURE - C

MANUFACTURER GUARANTEED TECHNICAL PARTICULARS OF SUSPENSIONCLAMP ASSEMBLY

(TO BE FILLED BY THE BIDDER)

ITEM DESCRIPTION UNIT

1. MANUFACTURER’S NAME & ADDRESS

2. TYPE ---

3. RATED VERTICAL STRENGTH K N

4. MINIMUM SLIP STRENGTH K N

MAXIMUM SLIP STRENGTH K N

5. LENGTH (NOMINAL) MM

6. WEIGHT OF CLAMP (NOMINAL) KG

7. TOTAL DROP INCLUDING SHACKLES MM

8. TIGHTENING TORQUE (NOMINAL) N M

9. DETAILS OF RE-INFORCING ROD SET

A) NO. OF RODS PER CLAMPB) DIRECTION OF LAY

C) OVERALL LENGTH MMD) DIAMETER OF EACH ROD MM

E) TOLERANCES

I) DIAMETER OF EACH ROD +/-MMII) LENGTH OF EACH ROD1 +/-MM

IX) MATERIAL OF MANUFACTUREKG

X) WEIGHT (NOMINAL)

10. DETAILS OF ARMOUR ROD SETH) NO. OF RODS PER CLAMP

I) DIRECTION OF LAYJ) OVERALL LENGTH MM

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K) DIAMETER OF EACH ROD MM

11. TOLERANCE

I) DIAMETER OF EACH ROD* MM

II) LENGTH OF EACH ROD +/-MM

M) MATERIAL OF MANUFACTURE

N) WEIGHT (NOMINAL) KG

MEASURED WITH A TORQUE CONTROLLED MICROMETER HAVING 6.3MM DIAMETER ANVIL.

SIGNATURE OF THE BIDDER

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