TECHNICAL SPECIFICATIONS FOR 170 kV and 420 kV METAL …

TECHNICAL SPECIFICATIONS FOR 170 kV and 420 kV METAL OXIDE SURGE

ARRESTER WITH PORCELAIN HOUSING

The original version of this technical specification has been prepared in Turkish and in case of any

inconsistency between English and Turkish, the Turkish language shall prevail.

PREPARATION : DECEMBER 2005/MYTDB-24

REVISION-1 : NOVEMBER 2010/MYTDB-24

REVISION-2 : SEPTEMBER-2017

TEİAŞ

TEİAŞ-MYD/2005-024.2 i

Technical Specifications for 170 kV and 420 kV Metal Oxide Surge Arresters

with Porcelain Housing

TECHNICAL SPECIFICATIONS FOR 170 kV and 420 kV METAL OXIDE SURGE ARRESTER WITH PORCELAIN HOUSİNG

1. GENERAL .............................................................................................................. 1

1.1. Subject and Scope ............................................................................................ 1 1.2. Standards .......................................................................................................... 1 1.3. Operational Conditions ...................................................................................... 4

2. TECHNICAL CHARACTERISTICS ........................................................................ 4

2.1. Types ................................................................................................................ 5 2.2. Electrical Characteristics ................................................................................... 5

2.2.1. System Information .................................................................................... 5 2.2.2. Line Information ......................................................................................... 5 2.2.3. Surge Arrester Duty ................................................................................... 6

2.2.4. Surge Arrester Characteristics................................................................... 6 2.2.5. Failure in Complying with the Warranties, and Deviations ......................... 6

2.3. Structural Characteristics .................................................................................. 7

2.3.1. Insulator Housing and Surge Arrester Units .............................................. 7 2.3.2. Pressure Limiting Device ........................................................................... 8 2.3.3. Assembly ................................................................................................... 8

2.3.4. Connection Terminals ................................................................................ 9 2.3.5. Accessories ............................................................................................... 9 2.3.6. Nameplate ................................................................................................. 9

2.3.7. Precautions Against Corrosion ................................................................ 10 3. TESTS .................................................................................................................. 10

3.1. Surge Arrester Type Tests (Design Tests) ...................................................... 10 3.2. Routine Tests .................................................................................................. 11 3.3. Acceptance Tests ............................................................................................ 11

3.4. Field Tests ...................................................................................................... 12 3.5. Sampling ......................................................................................................... 12

4. MATTERS RELATED WITH TESTS AND ACCEPTANCE CRITERIA ............... 12 4.1. Surge Arrester Type Tests (Design Tests) ...................................................... 12

4.2. Routine Tests .................................................................................................. 13

4.3. Acceptance Tests ............................................................................................ 13 4.4. Acceptance Criteria ......................................................................................... 14 4.5. Acceptance Procedure .................................................................................... 15

ANNEX–1/A LIST OF WARRANTED CHARACTERISTICS OF 170 kV METAL OXIDE SURGE ARRESTER WITH PORCELAİN HOUSING .................................. 16

ANNEX–1/B LIST OF WARRANTED CHARACTERISTICS OF 420 kV METAL OXIDE SURGE ARRESTER WITH PORCELAIN HOUSING .................................. 21 ANNEX-2/A LIST OF DEVIATIONS OF 170 kV METAL OXIDE SURGE ARRESTER WITH PORCELAIN HOUSING ................................................................................. 26 ANNEX-2/B LIST OF DEVIATIONS OF 420 kV METAL OXIDE SURGE ARRESTER WITH PORCELAIN HOUSING ................................................................................. 27

TEİAŞ

TEİAŞ-MYD/2005-024.2 1 Technical Specifications for 170 kV and

420 kV Metal Oxide Surge Arresters with Porcelain Housing

TECHNICAL SPECIFICATIONS FOR 170 kV and 420 kV METAL OXIDE SURGE ARRESTER WITH PORCELAIN HOUSING

1. GENERAL 1.1. Subject and Scope These Technical Specifications contains the technical characteristics of surge arresters between phase – ground, which do not have jump gaps, which have variable metal oxide resistance and which have porcelain housing, that will be used for limiting the voltage increases in 170 kV and 420 kV installations. Unless otherwise specified in the specifications and their annexes, the surge arresters included in the scope of these specifications shall be delivered in the form of single phase units, in complete form together with all their auxiliary hardware and materials. The types and technical characteristics of the surge arresters that are requested are indicated in the List of Warranted Characteristics that is given in the attachment of the Technical Specifications, as well as in the Technical Specifications. In the following sections of the Technical Specifications, “170 kV and 420 kV Metal Oxide Surge Arresters with Porcelain Housing” shall be referred to as only “Surge Arrester” and the “Technical Specifications for 170 kV and 420 kV Metal Oxide Surge Arresters with Porcelain Housing” shall be referred to as only the “Technical Specifications”. 1.2. Standards Unless otherwise specified, the design, production and tests of the surge arresters included in the scope of These Specifications shall be performed in compliance with the latest editions of the following standards and /or documents.

Standard Number Standard name

TSE Standard No. International Standard No.

TS EN ISO 9001 EN ISO 9001 Kalite Yönetim Sistemleri - Şartlar

Quality management systems - Requirements

TS EN ISO 14001 EN ISO 14001

Çevre yönetim sistemi - Şartlar ve kullanım kılavuzu

Environmental Management Systems - Requirements With Guidance For Use

TS EN 60099-4 IEC 60099-4

Parafudrlar-Bölüm 4: A.a. sistemler için -Atlama aralıksiz metal oksit parafudrlar

Surge arresters - Part 4: Metal-oxide surge arresters without gaps for a.c. systems

TS EN 60099-5 IEC 60099-5 Parafudrlar - Bölüm 5: Seçme ve

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uygulama kuralları

Surge arresters-Part 5: Selection and application recommendations

TS EN 60060-1 IEC 60060-1

Yüksek Gerilim Deney Teknikleri Bölüm 1:Genel tarifler ve deney kuralları

High voltage test techniques. Part 1: General definitions and test requirements

TS EN 60060-2 IEC 60060-2

Yüksek gerilim deney teknikleri – Bölüm:2 Ölçme sistemleri

High voltage test techniques. Part 2: Measuring systems

TS 293 EN 60068-2-11

IEC 60068-2-11

Çevre şartlarına dayanıklılık deneyleri- Bölüm 2-11: Deneyler- Deney ka: Tuzlu sis

Environmental testing – Part 2: Tests – Test Ka: Salt mist

TS EN 60068-2-14 IEC 60068-2-14

Çevre şartlarına dayanıklılık deneyleri - Bölüm 2-14: Deneyler - Deney N: Sıcaklık değişimi

Environmental testing - Part 2-14: Tests - Test N: Change of temperature

TS 2096 EN 60068-2-17

IEC 60068-2-17

Çevre şartlarına dayanıklılık deneyleri- Bölüm 2-17: Deneyler- Deney q sızdırmazlık

Environmental testing-Part 2: Tests-Test Q: Sealing

TS EN 60071-1 IEC 60071-1

Yalıtım koordinasyonu- Bölüm 1: Tarifler, prensipler ve kurallar

Insulation co-ordination - Part 1: Definitions, principles and rules

TS EN 60071-2 IEC 60071-2

Yalıtım koordinasyonu - Bölüm 2: Uygulama kılavuzu

Insulation co-ordination - Part 2: Application guide

TS 2051 EN 60270 IEC 60270

Kablolar-Yüksek gerilim deney teknikleri-Kısmi boşalma ölçmeleri

High-voltage test techniques - Partial discharge measurements

TS EN 60507 IEC 60507

İzolatörler-A.a. sistemlerinde kullanılan yüksek gerilim izolatörlerine uygulanan yapay kirlilik deneyleri

Artificial pollution tests on high-voltage ceramic and glass insulators to be used on a.c. systems

TS EN 60721-3-2 IEC 60721-3-2 Çevre şartlarının sınıflandırılması bölüm

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3: Çevre parametreleri ve bunlara ait şiddet dereceleri gruplarının sınıflandırılması- Kısım 2: Taşıma

Classification of environmental conditions; part 3: classification of groups of environmental parameters and their severities; transportation

IEC TS 60815-1

Selection and dimensioning of high-voltage insulators intended for use in polluted conditions - Part 1: Definitions, information and general principles

IEC TS 60815-2

Selection and dimensioning of high-voltage insulators intended for use in polluted conditions - Part 2: Ceramic and glass insulators for a.c. systems

CISPR/TR 18-2

Radio interference characteristics of overhead power lines and high-voltage equipment – Part 2: Methods of measurement and procedure for determining limits

TS 11238 EN 60672-3

IEC 60672-3

Seramik ve cam yalıtım malzemeleri- Bölüm 3: Malzeme özellikleri

Ceramic and glass insulating materials- Part 3: Specifications for individual materials

Electrical accessories, components and other auxiliary equipment shall be compliant with the relevant TSE or IEC standards, even if such standards are not indicated among the standards given herein above. In relation with the materials, for which no such standards exist, the Bidder/ Contractor shall propose applicable standards, provided that the approval of the Purchaser is obtained. If other equivalent or superior standards are applied, their copies in English or Turkish shall be submitted together with the Bid. If there are differences between TSE and IEC standards, written permission shall be obtained from the Purchaser for the standard to be applied about the matters that show differences. All chemical, physical and dielectric characteristics of the materials used in the production of the surge arresters shall be compliant with the characteristics prescribed by the relevant ASTM (American Society for Testing and Materials) or DIN (Deutsches Institut für Normung) or norms of European Union countries.

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If the above standards and/or documents are amended during the stages following the stage of opening the bids taken for the surge arresters, the amendment or edition that was in force on the date of the bid shall apply unless requested in writing by the Purchaser. 1.3. Operational Conditions Unless otherwise specified in the List of Warranted Characteristics, the surge arresters to be ordered shall be suitable for operation under the following outdoor conditions. These conditions are the normal operational conditions and are the values in the Technical Specifications and their annexes are given in accordance with those conditions. If the directorate has any request that is different from those conditions, the Manufacturer shall perform its works in compliance with the relevant conditions, taking this situation into consideration. As the result of those works, the Manufacturer shall submit the changes that may be made in the Technical Specifications and their annexes to the approval of the Directorate. - Elevation from Sea Level (m) : ≤1000 - Ambient temperature (ºC) : . Maximum : +40 . Minimum : -40 . 24-hour average : Under +35 . Yearly average : Not exceeding +25 - Wind pressure (Pascal) . On round surface : 700 . On flat surface : 1200 - Maximum solar radiation (W/m²) : 1100 - Icing (mm) : Class 10,10 mm - Environmental Air Pollution : Yes, (Heavy pollution) - Maximum relative humidity (24-

hour average) : % 95

- Earthquake (*) . Horizontal acceleration : 0.5 g (at ground level) . Vertical acceleration : 0.25 g (*) Unless otherwise specified, the surge arresters shall be resistant against

horizontal and vertical earthquake acceleration values and shall be designed so as to prevent any damage to any of its units. The Contractor shall submit the designs, drawings and materials necessary for the installation of the surge arresters at the place of operation, and the seismic withstand test reports and seismic withstand calculations of the surge arresters.

2. TECHNICAL CHARACTERISTICS Surge arresters shall be compliant with the latest editions of the standards included under the heading “1.2. Standards and Documents” and the technical characteristics indicated in These Specifications.

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2.1. Types The Surge Arresters too be provided shall be of the following types unless otherwise specified in the List of Warranted Characteristics:

- With variable metal oxide resistance, - Without spark gaps, - With porcelain housing, - Outdoor type

2.2. Electrical Characteristics Unless otherwise specified in the List of the Warranted Characteristics, the electrical characteristics of the surge arresters shall be as indicated hereunder: 2.2.1. System Information - Rated operational voltage (kV) : 154 400 - Maximum system voltage (kV) : 170 420 - Rated frequency (Hz) (**) : 50 50 - Ground failure coefficient 1.4 1.4 - System grounding : Directly

grounded neutral system

Directly grounded neutral system

- Time for clearing ground failures (sec) : 1 1 - Isolation level of power transformers . Lightning impulse withstand voltage (kV-

peak) : 650 1425

. Power frequency withstand voltage (kV-rms) : 275 630 . Switching impulse withstand voltage (kV-

peak) - 1050

- Shunt reactor isolation level . Lightning impulse withstand voltage (kV-

peak) : 750 1425

. Power frequency withstand voltage (kV-rms) : 325 630 . Switching impulse withstand voltage (kV-

peak) - 1175

- Rated short circuit current (kA-rms) : 31.5 63 (**) Frequency variation range: 48 Hz ≤f ≤62 Hz 2.2.2. Line Information

Rated operational voltage

154 kV 400 kV

Transmission line types

477 MCM, 795 MCM, 954 MCM or 1272 MCM

2x954 MCM, 3x954 MCM or 3x1272

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(all ACSR) (all ACSR)

Line impedance values (ohm)

477 MCM

795 MCM

1272 MCM

2x954 MCM

3x954 MCM

3x1272 MCM

400 360 350 300 260 150

2.2.3. Surge Arrester Duty - Connection to the system : between phase- ground - Equipment to be protected : Power transformer, shunt reactor, HV cable, transmission line 2.2.4. Surge Arrester Characteristics

Maximum system voltage (kV) 170 420

Rated voltage, Ur (kV) 144 360

Continuous operation voltage, Uc (kV) (If a value that is different from the requested value is provided, the necessary written explanation on the compatibility of the provided value shall be given to the Directorate)

115 288

Rated discharge current (kA) (8/20 microsecond waveform)

10 10 or 20 (***)

Rated short circuit current (kA-rms), Is

40 63

Surge arrester classification, (SM: Station Medium) (SH: Station High)

SM SM or SH (***)

Creepage distance (mm) (25 mm/kV)

4250 10500

(***) The values related with those articles are indicated in the “Requested” column in the list of Warranted Characteristics and they can be replaced in case this is found necessary by the Purchaser. The values and characteristics requested in relation with the surge arresters are indicated in the List of Warranted Characteristics to provide information. The Purchaser shall prepare the List of Warranted Characteristics taking into consideration the place of use and operational conditions of the surge arresters. 2.2.5. Failure in Complying with the Warranties, and Deviations In relation with the matters indicated in the Technical Specifications, the values given in the List of Warranted Characteristics have to be one to one complied with. In case of incompliance, the bidder shall clearly indicate the deviations in the lists in Annex -2/A and Annex-2/B. The list of deviations that is completed by the bidder shall be

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assessed by the Directorate in terms of compliance with the essence of the Technical Specifications and with the relevant standards. At the bid assessment stage, the Directorate reserves the right to reject or accept the bids that contain deviations. If nothing is indicated in the List of Deviations, the surge arresters shall be assessed to have complete one to one compliance with the Technical Specifications. 2.3. Structural Characteristics All materials to be used in the production of surge arresters shall be selected in the most appropriate way for the purposes of use in terms of their withstand, durability and other physical and electrical characteristics. The materials to be used shall be of the best quality and shall be flawless. 2.3.1. Insulator Housing and Surge Arrester Units 2.3.1.1 General The insulator housing shall be compliant with the relevant IEC/TSE standards and shall be made of porcelain material. The insulator housing shall be produced so as to be strong against the torsional forces, short circuit currents and forces that may occur due to earthquake and other vibrations and atmospheric conditions acting on them both under normal operational conditions and in cases where over voltages occur in the system. Open to atmosphere parts of all metal sections on the insulator housing shall be made of stainless steel material or aluminum. All metal parts shall be fixed so as not to be detached from the housing in case of temperature changes and mechanical forces and the material used for fixing shall be of high quality and shall not enter into a chemical reaction with the metallic parts and shall not break in case of expansions. A complete surge arrester having 170 kV voltage level shall be designed so as to consist of maximum 2 units, and a surge arrester at 420 kV voltage level shall be designed so as to consist of maximum 3 units. Unless otherwise specified in the List of Warranted Characteristics, creepage distance the housing shall be minimum 25 mm/kV. 2.3.1.2 Porcelain Housing

The active parts and units of the surge arrester shall be placed in a porcelain housing, which is sheltered with a dehumidifying material, which is filled with dry air or nitrogen and both ends of which are closed with sealed, non-deteriorating elastic

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seals. Appropriate precautions shall be taken to protect active parts against humidity and dirt for a long period of time. The housing shall be made of high-quality porcelain. The characteristics of porcelain material shall be compliant with C130 class as defined in TS EN 60672-3. The porcelain housings shall be of high quality and shall have a homogeneous structure, their surfaces, which are exposed to atmosphere, shall be coated evenly with a smooth, flawless, brown bright glaze. The glaze shall not be affected by sudden temperature changes and shall be resistant against industrial pollution, ozone, acid, alkalis, salt, dust and other atmospheric conditions. The housing shall not have any foreign materials, cracks, shelling, air bubbles, scratches, burrs, pores, stains and similar defects. The housing and the glaze shall not be affected from sudden temperature changes and shall be resistant against industrial pollution, ozone, acid, alkalis, salt, dust and other atmospheric conditions. The housing shall be designed so as to have a minimum partial discharge and radio interference voltage (RIV). 2.3.2. Pressure Limiting Device If the surge arresters have a closed gas volume and a separate sealing system (tube design), they shall be equipped with a pressure limiting device that will discharge the internal pressure at a certain level through the output ducts in the insulating housing flanges. When the surge arrester becomes subject to a short circuit in an unexpected situation, the breaking of the housing and damage to the surrounding shall be prevented thanks to this device. The output ducts shall not be routed to the grounding terminal in order to prevent further increase of internal pressure by ensuring a surface jump, and the equipment of each unit shall be routed towards each other. 2.3.3. Assembly The surge arresters shall be installed vertically on a horizontal surface. All surge arresters shall have an insulating base. The surge arresters shall be bolted on horizontal plane. The surge arresters shall be assembled in compliance with the assembly instructions provided by the producer. Especially for surge arresters with more than 1 unit, care shall be paid to ensure the assembly of units with the right order.

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2.3.4. Connection Terminals Line terminal connections of surge arresters shall be clamp solderless or cylindrical type. If the terminal is of clamp type, it shall be suitable for the safe connection of conductors up to a diameter of 40 mm, and if the terminal is of cylindrical type, it shall have a minimum length of 120 mm and a minimum diameter of 40 mm. The grounding terminals shall be of clamp type and shall be suitable for the safe connection of conductors up to a diameter of 40 mm. The dimensions of line and grounding terminals shall be submitted to the approval of the purchaser. Line and grounding terminals shall be made of stainless steel or a better alloy that ensures high quality with compatibility with aluminum or copper conductors. 2.3.5. Accessories Each complete surge arrester shall be provided together with the following accessories; - Insulator base and connection members, - Corona ring/Grading ring (****), - Line and grounding terminals, - Pressure limiting device, - Impulse counter Impulse counters shall be of outdoor and recording type; one impulse counter shall be placed on each phase and the impulse counters shall have ammeters. The bidders shall provide the detailed technical characteristics, relevant technical documents and catalogs for the impulse counter they proposed. (****) It shall be clearly indicated by the bidder if the accessory will be provided or not depending on the design condition. 2.3.6. Nameplate Each surge arrester shall have a nameplate made of stainless steel or any other non-rusting metal. This label shall be assembled strongly on the surge arrester or shall be an integrated part of the surge arrester. If the surge arrester consists of more than 1 units, each unit shall be labeled and the nameplate shall be fixed so as to be clearly visible. The inscriptions on the nameplate shall not deteriorate in time. All inscriptions shall be Turkish or both English and Turkish and shall be submitted to the approval of the Purchaser. The following information shall be included on the nameplate:

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- Material code number of the purchaser, - Purchaser’s order number, - Name of manufacturer, - Type mark and serial number, - Date of manufacture (month and year), - Rated voltage, - Continuous operational voltage, - Rated frequency, - Class, - Rated discharge current, - Pressure limiting current, - Rated short circuit current, - Definition of assembly location of units (in case there are more than 1 units)

2.3.7. Precautions Against Corrosion The metallic parts of surge arresters shall be made of stainless steel or aluminum. 3. TESTS The following type (design), routine and acceptance tests shall be performed in accordance with the latest edition of the relevant IEC/TSE standards. 3.1. Surge Arrester Type Tests (Design Tests) The following type tests, which are included in TS EN 60099-4 standard shall be applied on the surge arresters with porcelain housing: a) Insulation withstand tests on the arrester housing (IEC 60099-4 article 8.2)

i. Lightning impulse voltage test (TS EN 60099-4 article 8.2.6) ii. Switching impulse voltage test (TS EN 60099-4 article 8.2.7) iii. Power-frequency voltage test (TS EN 60099-4 article 8.2.8)

b) Residual voltage tests (TS EN 60099-4 article 8.3) i. Steep current impulse residual voltage test (TS EN 60099-4 article 8.3.2) ii. Lightning impulse residual voltage test (TS EN 60099-4 article 8.3.3), iii. Switching impulse residual voltage test (TS EN 60099-4 article 8.3.4)

c) Test to verify long term stability under continuous operating voltage (TS EN

60099-4 article 8.4)

d) Test to verify the repetitive charge transfer rating, Qrs (TS EN 60099-4 article 8.5)

e) Heat dissipation behavior of test sample (TS EN 60099-4 article 8.6) f) Operating duty test (TS EN 60099-4 article 8.7) g) Power-frequency voltage-versus-time test (TS EN 60099-4 article 8.8)

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h) Short-circuit tests (TS EN 60099-4 article 8.10) i. High-current short-circuit tests (TS EN 60099-4 article 8.10.4) ii. Low-current short-circuit tests (TS EN 60099-4 article 8.10.5)

i) Test of the bending moment (TS EN 60099-4 article 8.11)

j) Environmental tests (TS EN 60099-4 article 8.12)

i. Temperature cycling test (TS EN 60099-4 article 8.12.3.1) ii. Salt mist test (TS EN 60099-4 article 8.12.3.2)

k) Seal leak rate test (TS EN 60099-4 article 8.13)

l) Radio interference voltage (RIV) test (TS EN 60099-4 article 8.14) m) Test to verify the dielectric withstand of internal components (TS EN 60099-4

article 8.15)

n) Test of internal grading components (TS EN 60099-4 article 8.16) i. Test to verify long term stability under continuous operating voltage (TS EN

60099-4 article 8.16.1) ii. Thermal cycling test (TS EN 60099-4 article 8.16.2)

o) Polluted housing test (TS EN 60099-4 EK-C) 3.2. Routine Tests The following tests shall be applied on each produced surge arrester with porcelain housing by the producer: a) Tests included in article 9.1 under the heading “Routine Tests” of TS EN 60099-4

standard

i. Measurement of reference voltage (TS EN 60099-4 article 9.1.a) ii. Lightning impulse residual voltage test (TS EN 60099-4 article 9.1.b) iii. Internal partial discharge test (TS EN 60099-4 article 9.1.c,d) iv. Leakage check for arrester units with an enclosed gas volume and seperate

sealing (TS EN 60099-4 article 9.1.e) b) Other tests

i. Isolation Resistance test ii. Isolation loss measurement test (watt/µA)

Test shall be performed by applying 10 kV AC voltage at 50 Hz. 3.3. Acceptance Tests The following tests shall be performed on the samples of surge arresters with porcelain housing, which will be selected in compliance with the specifications:

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a) Tests included in article 9.2 of TS EN 60099-4 standard headed as “Acceptance Tests”. i. Standard acceptance tests (TS EN 60099-4 article 9.2.1)

1. Measurement of power-frequency voltage on the arrester at the reference current (TS EN 60099-4 article 9.2.1.a)

2. Lighting impulse residual voltage test (TS EN 60099-4 article 9.2.1.b) 3. Internal partial discharge test (TS EN 60099-4 article 9.2.1.c)

ii. Special thermal stability test (TS EN 60099-4 article 9.2.2) b) Other tests

i. Checking physical dimensions, label and warranted characteristics ii. Checking the ammeter and numerator on the impulse counters iii. Isolation resistance test iv. Isolation loss measurement test (watt/µA)

The test shall be performed by applying 10 kV AC voltage at 50 Hz. 3.4. Field Tests If the surge arrester assembly is performed by the Contractor, the following tests shall be performed by the Contractor on fully assembled surge arrester in the presence of Purchaser’s representatives: All of the details related with the tests to be performed shall be submitted by the Contractor and the test equipment and devices necessary for the tests shall be provided by the Contractor. a) Isolation resistance test b) Isolation loss measurement test (watt/µA)

The test shall be performed by applying 10 kV AC voltage at 50 Hz. 3.5. Sampling The samples to be used in the acceptance tests shall be randomly selected by the representatives of the Purchaser and unless otherwise specified, the number of samples to be taken shall be equal to the closest integer number to the cubic root o the surge arresters submitted in the batch. If the decimal part of the calculated value is 5 or more, the higher integer number shall be taken. 4. MATTERS RELATED WITH TESTS AND ACCEPTANCE CRITERIA 4.1. Surge Arrester Type Tests (Design Tests) The Bidder/ Contractor shall submit the type test reports belonging to the tests indicated under heading “3.1 Surge Arrester Type (Design) Tests” of the Technical Specifications (except the tests that are not possible or necessary in accordance with the standards, provided that the reason is indicated), which are performed in the last 10 (ten) years unless otherwise specified by the Directorate as of the date of the

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tender, in compliance with the latest editions of the relevant standards by a laboratory that is accredited by Turkish Accreditation Institution or the accreditation institutions included in the International Laboratory Accreditation Cooperation Mutual Recognition Agreement, for the surge arresters in each design. The type test reports submitted to the Directorate shall belong to the tests performed on surge arresters, surge arrester parts or surge arrester units that have the same design and same characteristics with the proposed surge arresters and that are produced at the same factory as the proposed surge arresters. Type tests shall be performed on samples that are selected in compliance with TS EN 60099-4 standard. In relation with those type test reports, a table containing information such as the factory, where the surge arrester, surge arrester parts or surge arrester units, which are tested, are produced, the type and characteristics of the surge arrester to which they belong, the laboratory and date of performance of type tests, and the documents proving that the laboratory, where the type tests are performed, is an accredited laboratory, shall be submitted to the Directorate in Turkish in a detailed way by making the necessary explanations. The type tests, which are not submitted to the Directorate, or which are submitted but do not comply with the above conditions, shall be performed on sample/ samples to be selected in compliance with the relevant standards and to be produced in the scope of the contract, in compliance with the latest editions of the relevant standards by an accredited laboratory, under the supervision of the Directorate’s representatives or by a laboratory to be approved by the Directorate, under the supervision of the observer from an accredited organization and the representatives of the Directorate. Even if the type test reports that comply with the requested conditions are submitted to the Directorate, provided that the Directorate indicates the type tests that it wants to be repeated in the tender file, they shall be performed without requiring the Directorate to incur any expenses. 4.2. Routine Tests The tests included under the heading “3.2 Routine Tests” of the Technical Specifications shall be applied by the Producer on each surge arrester ordered in the scope of the contract in compliance with the latest editions of the relevant standards and the routine test reports shall be submitted to the Directorate in CD/DVD medium in 2 (two) copies before the delivery.

4.3. Acceptance Tests Among the tests included under the heading “3.3. Acceptance Tests” of the Technical Specifications, the tests except the “Special Thermal Stability” test shall be applied on samples to be selected in an amount compliant with “3.5. Sampling” chapter in compliance with the latest editions of the relevant standards under the supervision of TEİAŞ representatives as acceptance tests for each lot of surge arrester delivery. The acceptance tests shall be performed at the Manufacturer’s laboratory or a laboratory to be approved by the Directorate. Routine test reports shall be submitted

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to the Inspection and Acceptance Commission before commencing the acceptance tests. Otherwise, test and acceptance operations shall not be commenced. The assembly Instructions prepared by the manufacturer for the surge arresters shall be submitted to the Directorate in the attachment of the acceptance test reports by the Contractor. Unless otherwise specified in the tender document, if the reports of the tests that are performed under the supervision of the Directorate’s personnel in compliance with the relevant standards within the last 1 year as of the date of acceptance on the resistances of the same type and characteristics as the metal oxide resistances to be used on the proposed surge arresters and on surge arresters of the same design and characteristics are submitted, Special Thermal Stability Test shall not be performed in the scope of the tender. If Special Thermal Stability Test report compliant with the above conditions is not submitted to the Directorate, the test shall be performed together with the other acceptance tests. 4.4. Acceptance Criteria a) The calibrations of the devices to be used in the tests shall be performed by an

accredited organization and the calibration certificates shall be submitted to the Inspection and Acceptance Commission before commencing the tests.

b) Positive results shall be obtained from all type tests to be performed. In case a negative result is obtained from a type test, the surge arresters belonging to the design giving a negative result shall be rejected. However, provided that it is requested by the Contractor and found appropriate by the Directorate, the repetition of the tests for the new product, which is produced by making the necessary changes, can be accepted with all expenses being borne by the Contractor, within a reasonable period of time, and the authority to decide belonging only to the Directorate, without giving any period extension. If the tests to be performed for the second time also give negative results, all of the surge arresters in the design that had a negative result shall be rejected.

c) Positive results shall be obtained from all acceptance tests. If a negative result is

obtained from any of the acceptance tests, the test/ tests shall be repeated on new samples, which have an amount that is twice the first samples, unless there is any other prerequisite in the relevant standard.

None of the samples selected for the test must be defective. If defective units are found, the Directorate shall be free in rejecting the entire party or the Contractor may be required to replace the defective units and to perform the relevant tests in compliance with the conditions of the Technical Specifications.

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4.5. Acceptance Procedure The Directorate or its representative shall be fee in examining the surge arresters and/or subjecting them to tests in order to verify their compliance with the Technical Specifications. The Directorate shall provide written information to the Contractor on the identification of any representative assigned for those purposes. Manufacture control and tests can be performed at the Manufacturer’s facilities at the place of material delivery and/or final delivery location of materials. The production control and tests shall be performed without requiring any expense by the Directorate and any kind of reasonable assistance and facilitation shall be provided for the inspectors including the permission to review drawings and production information. The Contractor shall notify the test program to the Directorate after signing the Contract. The Contractor shall notify the actual starting date of the tests to the Directorate minimum 45 (forty five) days before for the tests to be performed abroad and minimum 15 (fifteen) days before for the tests to be performed in the country. As the result of successful tests and inspections, the test reports shall be mutually signed and Shipment Order shall be given by the representatives of the Directorate for shipment. The Contractor shall submit 2 (two) copies of test report that are mutually signed to the Directorate’s representatives. However, the Directorate may notify to the Contractor that it will not participate in the tests. In this case, the Contractor shall perform the tests and notify their results to the Directorate. The test reports that are prepared and signed by the Contractor shall be sent to the Directorate in 3 (three) copies for being examined and approved. If the test reports are approved, Shipment Order shall be placed by the Directorate for shipment, and 1 (one) approved copy of test report shall be returned to the Contractor. In case it is understood that the examined and tested materials do not comply with the Technical Specifications, the Directorate may reject them. If accepted by the Directorate, the Contractor shall replace the rejected materials with new ones by bearing all relevant expenses or shall make the changes that will ensure their compliance with the Technical Specifications.

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List of Warranted Characteristics of 170 kV Metal Oxide Surge Arrester with Porcelain

Housing

ANNEX–1/A

LIST OF WARRANTED CHARACTERISTICS OF 170 kV METAL OXIDE SURGE ARRESTER WITH PORCELAİN HOUSING

Order No. : .......................... Drawing No. : ......................

Mat. Code of Purchaser : …………………

DEFINITION UNIT REQUESTED WARRANTED

1. Name and Origin of the Manufacturer

-

2. Type mark of the Manufacturer -

3. Operational conditions

- Elevation from sea level (Meter)

- Ambient temperature

Daily maximum °C

Daily minimum °C

24-hour average °C

Yearly average °C

- Maximum wind pressure

On round surface (Pascal)

On flat surface (Pascal)

- Maximum solar radiation (W/m²)

- Ice load (mm)

- Ambient air pollution (Yes/No)

- Maximum relative humidity

(24-hour average) %

- Earthquake

Horizontal acceleration (g)

Vertical acceleration (g)

4. Applied Standards - Indicated in T.S. article 1.2

5. Equipment to be protected -

Power transformer, shunt reactor, HV cable, transmission line

6. System grounding (Directly grounded / grounded over the resistance)

Directly grounded

7. System rated voltage (kV-rms) 154

8. Maximum system voltage (kV-rms) 170

9. Maximum period for clearing ground failures in the system

(sec) 1

10. Connection to the System - Between Phase –ground

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11.

Maximum length of the conductor between the surge arrester and the equipment to be protected (protection distance)

(meter)

12. System short circuit current at the point of connection of surge arrester

(kA) 31,5

13. Surge arrester classification - SM

14. Surge arrester rated voltage, Ur (kV-rms) 144

15.

Surge arrester continous operation voltage, Uc (*)If a value different from the requested value is given, the necessary written explanation shall be made to the Directorate for the compliance of the given value

(kV-rms) 115 (*)

16. Surge arrester rated discharge current, In (8/20 s) (kA) 10

17. Rated frequency (**) T.S. article 2.2.1 shall be complied with.

(Hz) 50 (**)

18. Surge arrester rated short circuit current

(kA-rms) 40

19. Partial discharge level (pC) ≤10

20. Characteristics of metal oxide resistance (shall be completed for 1 metal oxide resistance)

- Name and origin of the

manufacturer

- Diameter (mm)

- Height (mm)

- Weight (kg)

- Heat capacity

Minimum (kJ/°C)

Maximum (kJ/°C)

- Rated voltage

Minimum (kV-rms)

Maximum (kV-rms)

- Operational voltage (kV-rms)

- Reference voltage

Minimum (kV-rms)

Maximum (kV-rms)

- Name of resistance material -

- Material of contact surface -

- Material of outer layer -

- Residual voltage at rated

discharge current

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Minimum (kV)

Maximum (kV)

21. Metal oxide resistance number used in the complete surge arrester

(piece)

22. Number of units in a complete surge arrester (piece) ≤2

23. At ambient temperature;

- Reference current (kA- peak)

- Reference voltage (kV-rms)

24.

Resistive and capacitive components of continuous current at continuous operational voltage for the complete surge arrester at ambient temperature

(mA)

25. Steep current impulse residual voltage

- Current impulse type 1/20 µs

- Current impulse peak value (kA- peak) Rated discharge current

- Highest residual voltage (kV- peak) ≤410

26. Steep current impulse protection level ≤410

27. Lightning impulse residual voltage


- Current impulse peak values (kA- peak)

0,5, 1 and 2 times the rated discharge current

- Highest residual voltages

At 0.5 times the rated

discharge current (kV- peak)

At 1 times the rated

discharge current (kV- peak) ≤368

At twice the rated discharge

current (kV- peak)

28. Lightning impulse protection level, Upl (kV- peak) ≤368

29. Switching impulse residual voltage

- Current impulse type -

Impulse forehead period 30-100 µs and default back half value period approximately twice the default forehead period

- Current impulse peak value (kA) 1


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30. Switching impulse protection level, Ups (kV- peak) ≤309

31. High current impulse operation regime

- High current impulse peak

value(4/10 µs) (kA- peak) 100

- Maximum variation in residual

voltage before and after complete test

(%) 5

32. Thermal energy value, Wth (kJ/kV) ≥7

33. Repetitive charge transfer rate, Qrs (kJ/kV) ≥1.6

34. time dependent power- frequency voltage characteristics

- Maximum operational frequency

voltage applicable to the surge arrester

1s (kV-rms)

10s (kV-rms) ≥144

100s (kV-rms)

3600s (kV-rms)

35. Maximum radio interference voltage (RIV) (V) ≤2500

36. Pressure limiting mechanism (yes /no) Yes

37. Maximum period of time to operate pressure limiting device, if any

- High current (ms)

- Low current (ms)

38. Withstand against short circuit current

- High current (kA-rms) 40

- Low current (A-rms) 600 ± 200

39. Gas filled section

- Yes/no - Yes

- İf yes, type and characteristics

of gas -

40. Surge arrester housing type - Porcelain

41. Surge arrester housing manufacturer -

42. Dielectric strength of surge arrester housing

- Power frequency withstand

voltage, wet (kV-rms) 275

- Lightning impulse withstand

voltage (kV- peak) 650

43. Minimum surface leak path length (Creepage distance) (mm/kV) 4250

44. Terminals

- Line Terminals -

Type (cylindrical type

/clamp type) -

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Material -

Section of the conductor to

be connected

- Ground terminals


/clamp type)

Material


be connected

45. Mechanical strength

- Specified long term load , SLL (Nm) ≥3000

- Specified short term load, SSL (Nm) ≥7500

46. Corona ring -Yes/No -Material

- -

47. Impulse counter

- Name and Origin of the

Manufacturer -

- Type -

- Digit number -

- Minimum counting current

(8/20 µs) (A) 100

- Maximum strength against high

current (4/10 µs) (kA) 100

- Rated residual voltage (100 kA,

4/10 µs waveform) (kV- peak)

- Milli-ammeter scale (mA)

48. Dimensions of surge arrester (mmxmmxmm)

49. Net weight of surge arrester (kg)

50. Gross carrying weight of surge arrester (kg)

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ANNEX–1/B

LIST OF WARRANTED CHARACTERISTICS OF 420 kV METAL OXIDE SURGE ARRESTER WITH PORCELAIN HOUSING

Order No: .......................... Drawing No : ..........................

Mat. Code of Purchaser: …………………


1. Name and Origin of the Manufacturer

-

2. Type mark of the Manufacturer -

3. Operational conditions

- Elevation from sea level (Meter)

- Ambient temperature

Daily maximum °C

Daily minimum °C

24-hour average °C

Yearly average °C

- Maximum wind pressure

On round surface (Pascal)

On flat surface (Pascal)

- Maximum solar radiation (W/m²)

- Ice load (mm)

- Ambient air pollution (Yes/No)

- Maximum relative humidity

(24-hour average) %

- Earthquake

Horizontal acceleration (g)

Vertical acceleration (g)

4. Applied Standards - Indicated in T.S. article 1.2

5. Equipment to be protected -

Power transformer, shunt reactor, HV cable, transmission line

6. System grounding (Directly grounded / grounded over the resistance)

Directly grounded

7. System rated voltage (kV-rms) 400

8. Maximum system voltage (kV-rms) 420

9. Maximum period for clearing ground failures in the system

(sec) 1

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10. Connection to the System - Between Phase –ground

11.

Maximum length of the conductor between the surge arrester and the equipment to be protected (protection distance)

(meter)

12. System short circuit current at the point of connection of surge arrester

(kA) 63

13.

Surge arrester classification (*)If found necessary by the purchaser, it can be changed in compliance with T.S. Article 2.2.4

- SM

14. Surge arrester rated voltage, Ur (kV-rms) 360

15.

Surge arrester continous operation voltage, Uc (**)If a value different from the requested value is given, the necessary written explanation shall be made to the Directorate for the compliance of the given value

(kV-rms) 288(*)

16.

Surge arrester rated discharge current, In (8/20 s)

(*)If found necessary by the purchaser, it can be changed in compliance with T.S. Article 2.2.4

(kA) 10 (*)

17. Rated frequency (***) T.S. article 2.2.1 shall be complied with.

(Hz) 50 (***)

18. Surge arrester rated short circuit current

(kA-rms) 63

19. Partial discharge level (pC) ≤10

20. Characteristics of metal oxide resistance (shall be completed for 1 metal oxide resistance)

- Name and origin of the

manufacturer

- Diameter (mm)

- Height (mm)

- Weight (kg)

- Heat capacity

Minimum (kJ/°C)

Maximum (kJ/°C)

- Rated voltage

Minimum (kV-rms)

Maximum (kV-rms)

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Housing


- Operational voltage (kV-rms)

- Reference voltage

Minimum (kV-rms)

Maximum (kV-rms)

- Name of resistance material -

- Material of contact surface -

- Material of outer layer -

- Residual voltage at rated

discharge current

Minimum (kV)

Maximum (kV)

21. Metal oxide resistance number used in the complete surge arrester

(piece)

22. Number of units in a complete surge arrester (piece) ≤2

23. At ambient temperature;

- Reference current (kA- peak)

- Reference voltage (kV-rms)

24.

Resistive and capacitive components of continuous current at continuous operational voltage for the complete surge arrester at ambient temperature

(mA)

25. Steep current impulse residual voltage


- Current impulse peak value (kA- peak) Rated discharge current


26. Steep current impulse protection level ≤933

27. Lightning impulse residual voltage


- Current impulse peak values (kA- peak)

0,5, 1 and 2 times the rated discharge current

- Highest residual voltages

At 0.5 times the rated

discharge current (kV- peak)

At 1 times the rated

discharge current (kV- peak) ≤873

At twice the rated discharge

current (kV- peak)

28. Lightning impulse protection level, Upl (kV- peak) ≤873

29. Switching impulse residual voltage

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- Current impulse type -

Impulse forehead period 30-100 µs and default back half value period approximately twice the default forehead period

- Current impulse peak value (kA) 1


30. Switching impulse protection level, Ups (kV- peak) ≤730

31. High current impulse operation regime

- High current impulse peak

value(4/10 µs) (kA- peak) 100

- Maximum variation in residual

voltage before and after complete test

(%) 5

32. Thermal energy value, Wth (kJ/kV) ≥7

33. Repetitive charge transfer rate, Qrs (kJ/kV) ≥1.6

34. Time dependent power- frequency voltage characteristics

- Maximum operational frequency

voltage applicable to the surge arrester

1s (kV-rms)

10s (kV-rms) ≥360

100s (kV-rms)

3600s (kV-rms)

35. Maximum radio interference voltage (RIV) (V) ≤2500

36. Pressure limiting mechanism (yes /no) Yes

37. Maximum period of time to operate pressure limiting device, if any

- High current (ms)

- Low current (ms)

38. Withstand against short circuit current

- High current (kA-rms) 63

- Low current (A-rms) 600 ± 200

39. Gas filled section

- Yes/no - Yes

- İf yes, type and characteristics

of gas -

40. Surge arrester housing type - Porcelain

41. Surge arrester housing manufacturer -

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42. Dielectric strength of surge arrester housing

- Power frequency withstand

voltage, wet (kV-rms) 630

- Lightning impulse withstand


- Switching impulse withstand


43. Minimum surface leak path length (Creepage distance) (mm/kV) 10500

44. Terminals

- Line Terminals -


/clamp type) -

Material -


be connected

- Ground terminals


/clamp type)

Material


be connected

45. Mechanical strength

- Specified long term load, SLL (Nm) ≥4000

- Specified short term load, SSL (Nm) ≥10000

46. Corona ring -Yes/No -Material

- -

47. Impulse counter

- Name and Origin of the

Manufacturer -

- Type -

- Digit number -

- Minimum counting current

(8/20 µs) (A) 100

- Maximum strength against high

current (4/10 µs) (kA) 100

- Rated residual voltage (100 kA,

4/10 µs waveform) (kV- peak)

- Milli-ammeter scale (mA)

48. Dimensions of surge arrester (mmxmmxmm)

49. Net weight of surge arrester (kg)

50. Gross carrying weight of surge arrester (kg)

TEİAŞ-MYD/2005-024.2 26

List of Deviations for 170 kV Metal Oxide Surge Arrester with Porcelain

Housing

ANNEX-2/A

LIST OF DEVIATIONS OF 170 kV METAL OXIDE SURGE ARRESTER WITH PORCELAIN HOUSING

Order No. : ...................... Drawing No. .: .....................

Mat. Code of Purchaser: ......................

A- DEVIATIONS FROM TECHNICAL SPECIFICATIONS (It shall be clearly indicated by the bidder in which article there are deviations and what those deviations are.)

……………………………………………………………….

……………………………………………………………….

……………………………………………………………….

……………………………………………………………….

……………………………………………………………….

……………………………………………………………….

………………………………………………………………… B- DEVIATIONS IN THE LIST OF WARRANTED CHARACTERISTICS (It shall be clearly indicated by the bidder in which article there are deviations and what those deviations are.)

……………………………………………………………….

……………………………………………………………….

……………………………………………………………….

..………………………………………………………………

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List of Deviations for 420 kV Metal Oxide Surge Arrester with Porcelain

Housing

ANNEX-2/B LIST OF DEVIATIONS OF 420 kV METAL OXIDE SURGE ARRESTER WITH

PORCELAIN HOUSING

Order No. : ..................... Drawing No. .: ................

Mat. Code of Purchaser: ................. A- DEVIATIONS FROM TECHNICAL SPECIFICATIONS (It shall be clearly indicated by the bidder in which article there are deviations and what those deviations are.)

……………………………………………………………….

……………………………………………………………….

……………………………………………………………….

……………………………………………………………….

……………………………………………………………….

……………………………………………………………….

………………………………………………………………… B- DEVIATIONS IN WARRANTED CHARACTERISTICS LIST (It shall be clearly indicated by the bidder in which article there are deviations and what those deviations are.)

……………………………………………………………….

……………………………………………………………….

……………………………………………………………….

..………………………………………………………………

TECHNICAL SPECIFICATIONS FOR 170 kV and 420 kV METAL …

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Transcript of TECHNICAL SPECIFICATIONS FOR 170 kV and 420 kV METAL …