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CEI - EN 62271-102/A2

High-voltage switchgear and controlgear Part 102: Alternating current disconnectors and earthing switches

inactive
Organization: CEI
Publication Date: 1 February 2014
Status: inactive
Page Count: 16
ICS Code (High voltage switchgear and controlgear): 29.130.10
ICS Code (Other switchgear and controlgear): 29.130.99
scope:

This annex is applicable to resistor fitted disconnectors in metal-enclosed gas insulated switchgear (GIS). The maximum VFTO (very fast transient overvoltage) in GIS systems with a rated voltage of 800 kV and above may reach the insulation level of lightning impulse withstand voltage in certain cases during switching of disconnectors. The purpose of fitting a resistor is to mitigate the VFTO in such cases.

Three different types of resistor fitted disconnectors are given as examples in Figure H.1. The resistor can be positioned in parallel or in series to the switching gap. In the arc-commutation method the current is switched to the parallel resistor during an opening operation by commutation of the arc from the main contact to the resistor contact.

NOTE Typically resistors of values 200 Ω to 1 000 Ω are used. The overvoltage damping factor depends on the ratio of the resistance of the resistor and the system impedance.

Document History

August 1, 2019
High-voltage switchgear and controlgear Part 102: Alternating current disconnectors and earthing switches
A description is not available for this item.
January 1, 2019
High-voltage switchgear and controlgear - Part 102: High-voltage alternating current disconnectors and earthing switches
This part of IEC 62271 applies to alternating current disconnectors and earthing switches, designed for indoor and outdoor installations for nominal voltages above 1 000 V and for service frequencies...
July 1, 2014
High-voltage switchgear and controlgear Part 102: Alternating current disconnectors and earthing switches
FOREWORD The text of document 17A/1029/FDIS, future edition 1 of IEC 62271-102:2001/A2, prepared by SC 17A, "High-voltage switchgear and controlgear", of IEC TC 17, "Switchgear and controlgear" was...
EN 62271-102/A2
February 1, 2014
High-voltage switchgear and controlgear Part 102: Alternating current disconnectors and earthing switches
This annex is applicable to resistor fitted disconnectors in metal-enclosed gas insulated switchgear (GIS). The maximum VFTO (very fast transient overvoltage) in GIS systems with a rated voltage of...
July 1, 2012
High-voltage switchgear and controlgear Part 102: Alternating current disconnectors and earthing switches
FOREWORD The text of document 17A/972/FDIS, future edition 1 of IEC 62271-102:2001/A1, prepared by SC 17A, "High-voltage switchgear and controlgear", of IEC TC 17, "Switchgear and controlgear" was...
February 1, 2012
High-voltage switchgear and controlgear Part 102: Alternating current disconnectors and earthing switches
FOREWORD This amendment has been prepared by subcommittee 17A: High-voltage switchgear and controlgear, of IEC technical committee 17: Switchgear and controlgear. Full information on the voting for...
January 1, 2008
High-voltage switchgear and controlgear - Part 102: Alternating current disconnectors and earthing switches
La presente Variante recepisce il Corrigendum CENELEC del marzo 2005 alla Norma EN 62271-102:2002; tale Corrigendum include il testo del Corrigendum IEC n. 2 del maggio 2003 alla corrispondente Norma...
June 1, 2003
High-voltage switchgear and controlgear - Part 102: High-voltage alternating current disconnectors and earthing switches
La presente Norma si applica ai sezionatori e ai sezionatori di terra per installazione all'interno e all'esterno, in involucro e con terminali in aria, per funzionamento a frequenza non superiore a...
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