4-disconnect230kv

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E.1.4: DISCONNECT/EARTHING SWITCH

Technical Data Sheets E1-DSW-1/4

Name of Bidder:

Name & Signature of Bidder's Representative:

Designation:

E.1.4: DISCONNECT/EARTHING SWITCH 230KV

B.1 Technical Characteristics and Requirements

B.1.1 Technical Features and Requirements

Employers Requirement

a. Type (specify outdoor, indoor) Outdoor

b. Phase spacing (centerline-to-centerline), mm

c. Frequency, Hz 60

d. Supporting structure required No

B.1.2 Disconnect/Earthing Switch Ratings

a. Nominal System Voltage, kV 230

b. Rated Maximum Voltage, kV 245c. Rated Insulation Level

1. Short-durationPower Frequency Withstand

Voltage, dry 1minute, kV rms

2. Lightning Impulse Withstand Voltage , kV crest 900

d. Rated continuous current at System Frequency, A rms 1200

e. Rated Short-time Withstand Capability, kA rms. 38

f. Rated duration of short circuit current, sec 3

g. Rated Peak withstand current, kA 99

B.1.3 Disconnect/ Earthing Switch Physical Characteristics

a. Class Station Class, Outdoor

b. Pole construction Three

c. Mounting (specify vertical, horizontal) Horizontal

d. Mode of contact separation with reference to the

mounting plane (specify vertical, horizontal) Horizontal, center break

e. If horizontal, specify type (i.e. double column, three column) double column

f. If vertical, specify type (single column or pantograph, two

column) N/A

g. Earthing switch required (Yes, No) No

1. Type N/A

2. Current rating

a. Rated short circuit current, kA N/A

b. Rated Peak Withstand current, kA N/A

B.1.4 Support Insulator Characteristics

a. Rated Maximum Voltage, kV 245


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Name of Bidder:


Designation:


b. Creepage length, mm 6050

c. Type Porcelain

d. Color Brown

B.1.5 Operating Mechanism and Auxiliaries

a. Main Switch

1. Type Motor operated & manual

2. Mode of operation (specify remote, local, manual) remote, local & manual

3. Operating mechanism control voltage 125Vdc +10%, -15%

b. Earthing Switch (if required) N/A

c. Number of additional convertible auxiliary switches

above those normally required for disconnect/ earthing

operation 8A, 8B

B.1.6 Miscellaneous Accessories

a. Key Interlocks Yes

b. Position Indicator (both mechanical and light) Yes

c. Manual Closing Device provided Yes

d. Damping Device Yes

e. Arcing horn to be provided No

f. Line terminal connectors of disconnect switches to be

provided shall be suitable for: (specify size/ ampacity/

no. of conductors to be used)

Refer to Plan & Layout and Section

Drawings

g. Ground terminal connectors of disconnect switches to be

provided shall be suitable for: (specify size/ ampacity/

no. of conductors to be used)

> 125 mm2tin-annealed stranded

copper conductor, PVC insulatedh. Conduits from operating control mechanism down to

cable trench to be provided (Yes, No) Yes

B.2 Tests Requirements

a. Is disconnect/earthing switch design new or of previous

design with substantial changes in design and/or rating

(Yes, No) By Contractor

Note: If yes, certified design tests and reports are

required Yes

b. Design test and reports required Yes

c. Certified test design reports of prototype or duplicate

production type are acceptable Yes

d. Test reports of licenser instead of his own (Contractor)

is: (not acceptable, acceptable) not acceptable

e. Test frequency requirements 60 Hz


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Name of Bidder:


Designation:


f. Factory Routine Tests to be performed on each type and

voltage rating of the equipment (Yes, No) Yes

g. Factory Routine Tests to be witnessed by Employers

Representative (Yes, No) No

h. Required no. of personnel to witness routine tests N/A

B.3 Auxiliary Power Supply

B.3.1 The items listed below shall be designed to receive the following auxiliary power supply.

a. Motors 460 Vac, 3- , 60 Hz

b. Controls 125 Vdc, +10%, -15%

c. Indicating lights 125 Vdc, +10%, -15%

d. Space heaters 230 Vac, 1- , 60 Hz

e. Internal lights and convenience outlets 230 Vac, 1- , 60 Hz

B.4 Spares and Spare Parts

B.4.1 The following parts aside from those Contractor's recommended spare parts shall be furnished for

disconnect switches:

a. Unit(s) of insulator post column used for the disconnectswitch proposed. 1

b. Complete motor unit for the operating mechanism 1 unit

B.4.2 All spare parts shall be interchangeable with and identical in all respect to the original parts.

B.4.3 All disconnect/earthing switches of the same rating and type and its components shall be fully

interchangeable.

B.6 Tools

No particular tools are required.

C. Other Technical Data to be Filled-in by Contractor

C.1 The Contractor furnished data and information are included in this Specification to indicate the guaranteed

performance data, predicted performance, interface requirements and construction features of all Contractor

furnished equipment. The accuracy of such information and the compatibility of such information with

overall performance requirements specified by Employer are the sole responsibility of the Contractor.


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Name of Bidder:


Designation:

C.2 Environmental Considerations

C.2.1 In accordance with Paragraph 1.1.8 of the General Technical Requirements and the Technical Data

Sheets of Section E.1.1, the operating environment for this installation _(will , will not ) affect the life

expectancy of the components used in this equipment. If there will be an effect, the following componentswill be affected as follows:

Component Effect

_________________________ _________________________

_________________________ _________________________

_________________________ _________________________

C.3 Other Technical Data for Disconnect/Earthing switch

a. Country of Origin

b. Manufacturers

c. Type and Designation

d. Making Current of auxiliary contacts, A

e. Breaking current of auxiliary contacts, A

f. Power consumption of operating valves,

Watt

g. Power consumption of interlock valves or

magnets

h. Making current of motor protective circuitbreaker for disconnector

i. Breaking current or motor protective

circuit breaker for disconnector

4-disconnect230kv

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