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eLibrary > 20/30411023 DC BS EN IEC 62271-112. High-voltage switchgear and controlgear - Part 112. Alternating current high-speed earthing switches for secondary arc extinction on transmission lines >

20/30411023 DC BS EN IEC 62271-112. High-voltage switchgear and controlgear - Part 112. Alternating current high-speed earthing switches for secondary arc extinction on transmission lines, 2020

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20/30411023 DC BS EN IEC 62271-112. High-voltage switchgear and controlgear - Part 112. Alternating current high-speed earthing switches for secondary arc extinction on transmission lines, 2020

30411023
17A_1257e_CD [Go to Page]
CONTENTS
FOREWORD
1 Scope
2 Normative references
3 Terms and definitions [Go to Page]
3.1 General terms
3.2 Assemblies of switchgear and controlgear
3.3 Parts of assemblies
3.4 Switching devices
3.5 Parts of switchgear and controlgear
3.6 Operation
3.7 Characteristics quantities
4 Normal and special service conditions
5 Ratings [Go to Page]
5.1 General
5.5 Rated continuous current (Ir)
5.101 Rated short-circuit making current
5.102 Rated operating sequence
6 Design and construction [Go to Page]
6.1. General
6.5 Dependent power operation
6.7 Independent unlatched operation (independent manual or power operation)
11 Nameplates
6.12 Locking devices
6.101 Anti-pumping device
6.102 Special requirements for HSES
7 Type tests [Go to Page]
7.1. General
7.3 Radio interference voltage (RIV) test
7.5 Continuous current tests
7.101 Tests to prove the short-circuit making performance
7.102 Operating and mechanical endurance tests
7.103 Operation under severe ice condition
7.104 Operation at the temperature limits
7.105 Tests to prove the making and breaking performance of HSES
7.105.1 General test conditions
7.105.2 Induced current switching details
7.105.3 Arrangement of HSES before the test
7.105.4 Behaviour of HSES during the test
7.105.5 Condition after the test
8 Routine tests
9 Guide to the selection of HSES
10 Information to be given with enquiries, tenders and orders
11 Rules for transport, storage, installation, operation and maintenance
12 Safety
Annex A (informative) Background information on the use of HSES [Go to Page]
A.1 General
A.2 Typical operating sequence
A.3 Additional information about HSES
A.4 Comparison between the use of four-legged reactor and HSES
Annex B (informative) Induced current and voltage conditions for other cases [Go to Page]
B.1 General
B.2 Categories of fault conditions [Go to Page]
B.2.1 Category 0
B.2.2 Category 1
B.2.3 Category 2
B.2.4 Category 3
B.2.5 Category 4
B.3 Delayed current zero phenomena [Go to Page]
B.3.1 Explanation of an occurrence of delayed current zero phenomena
B.3.2 Preferred values for single-phase earth fault with delayed current zero phenomena in the presence of a successive fault
B.4 Preferred values of currents and voltages for multi-phase re-closing scheme
B.5 Interrupting condition to cover the cases corresponding to categories 0 and 1 [Go to Page]

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20/30411023 DC BS EN IEC 62271-112. High-voltage switchgear and controlgear - Part 112. Alternating current high-speed earthing switches for secondary arc extinction on transmission lines, 2020

⨯To continue with accurate pricing,
please select your company type below: