IEC TS 63042-301:2018

UHV AC transmission systems - Part 301: On-site acceptance tests

IEC TS 63042-301:2018(E) applies to on-site acceptance tests of electrical equipment with the highest voltages of AC transmission system exceeding 800 kV.

General Information

• Status: Published
• Publication Date: 05-Dec-2018
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• ICS: 29.240.01 - Power transmission and distribution networks in general
• Technical Committee: TC 122 - UHV AC transmission systems
• Drafting Committee: WG 3 - TC 122/WG 3
• Current Stage: PPUB - Publication issued
• Start Date: 24-Dec-2018
• Completion Date: 06-Dec-2018

Standards Content (Sample)

IEC TS 63042-301 ®
Edition 1.0 2018-12
TECHNICAL
SPECIFICATION
UHV AC transmission systems –
Part 301: On-site acceptance tests

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IEC TS 63042-301 ®
Edition 1.0 2018-12
TECHNICAL
SPECIFICATION
UHV AC transmission systems –
Part 301: On-site acceptance tests

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 29.240.01 ISBN 978-2-8322-6297-9

– 2 – IEC TS 63042-301:2018 © IEC 2018
CONTENTS
FOREWORD . 5
INTRODUCTION . 7
1 Scope . 8
2 Normative references . 8
3 Terms and definitions . 9
4 General . 9
5 Power transformers . 9
5.1 General . 9
5.2 Leak testing with pressure (tightness test) . 10
5.3 Winding resistance measurement . 10
5.4 Ratio test . 10
5.5 Polarity check . 10
5.6 Insulation resistance test on each winding to earth and between windings
including bushings . 10
5.7 Dissipation factor (tan δ) and capacitance measurement on each winding to
earth and between windings . 10
5.8 Core and frame insulation check . 11
5.9 Tests on bushings . 11
5.9.1 Visual inspection . 11
5.9.2 Tan δ and capacitance measurement . 11
5.9.3 Tap withstand voltage . 11
5.10 Insulating oil tests . 11
5.11 Dissolved Gas Analysis (DGA) test . 12
5.12 Excitation current measurements at reduced voltage . 12
5.13 Frequency-response analysis (FRA) . 12
5.14 Short-circuit impedance measurement at reduced current . 12
5.15 Induced voltage tests with partial discharge measurement . 12
5.16 Applied voltage tests . 13
6 Circuit breakers . 13
6.1 General . 13
6.2 Dielectric test on main circuit . 13
6.3 Dielectric test on auxiliary circuit . 13
6.4 Measurement of the resistance of the main circuit . 14
6.5 Checks after installation including gas tightness tests, gas quality, insulation
resistance test . 14
6.5.1 General . 14
6.5.2 General checks . 14
6.5.3 Checks of electrical circuits . 14
6.5.4 Checks of the insulation and/or extinguishing fluid(s) . 14
6.5.5 Checks on operating fluid(s), where filled or added to on site . 15
6.5.6 Site operations . 15
6.6 Mechanical test and measurement . 15
6.7 Test of accessories . 16
7 GIS . 16
7.1 General . 16
7.2 Dielectric tests on the main circuits . 17
7.3 Dielectric tests on auxiliary circuits . 18

7.4 Measurement of the resistance of the main circuit . 18
7.5 Gas tightness tests . 19
7.6 Checks and verifications . 19
7.7 Gas quality verifications . 19
8 Surge arresters . 19
8.1 General . 19
8.2 Insulation resistance test . 19
8.3 Insulation resistance test of the base insulator . 20
8.4 Leakage current test . 20
8.5 Checks and verifications . 20
8.6 Tests of accessories . 20
9 Voltage and current transformers . 20
9.1 Capacitive voltage transformers (CVTs) . 20
9.1.1 General . 20
9.1.2 Insulation resistance measurement of low voltage terminal to earth
terminal . 21
9.1.3 Capacitance and dissipation factor (tan δ) measurement . 21
9.1.4 Tightness of the liquid-filled capacitor voltage dividers . 21
9.1.5 Winding resistance measurement of electromagnetic units . 21
9.1.6 Insulation resistance measurement of each component of
electromagnetic units . 21
9.1.7 Connection check between components of electromagnetic units . 21
9.1.8 Tightness of electromagnetic units . 21
9.1.9 Accuracy check (determination of error). 22
9.1.10 Damper check . 22
9.2 Bushing-type CTs . 22
9.2.1 General . 22
9.2.2 Insulation resistance test . 22
9.2.3 Resistance measurement . 22
9.2.4 Applied voltage test on secondary windings . 23
9.2.5 Determination of error and polarity check . 23
9.2.6 Excitation test . 23
10 Shunt reactors . 23
10.1 General . 23
10.2 Leak testing with pressure (tightness test) . 24
10.3 Winding resistance measurement . 24
10.4 Insulation resistance tests on each winding to earth and between windings
including bushings . 24
10.5 Dissipation factor (tan δ) and capacitance measurement on each winding to
earth and between windings . 24
10.6 Core and frame insulation check . 24
10.7 Tests on bushings . 24
10.7.1 Visual inspection . 24
10.7.2 Tan δ and capacitance measurement . 24
10.7.3 Tap withstand voltage . 25
10.8 Insulating oil tests . 25
10.9 DGA test . 25
10.10 Applied voltage tests . 25
11 Series compensators . 25

– 4 – IEC TS 63042-301:2018 © IEC 2018
11.1 General .
...