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Reference EN 61954:2011
Title Static VAR compensators (SVC) - Testing of thyristor valves
Project Number 22866
Abstract/Scope IEC 61954:2011 defines type, production and optional tests on thyristor valves used in thyristor controlled reactors (TCR), thyristor switched reactors (TSR) and thyristor switched capacitors (TSC) forming part of static VAR compensators (SVC) for power system applications. The requirements of the standard apply both to single valve units (one phase) and to multiple valve units (several phases). This edition includes the following significant technical changes with respect to the previous edition: a) Definitions of terms 'thyristor level', 'valve section', 'valve base electronics' and 'redundant thyristor levels' have been changed for clarification; b) Conditions of testing thyristor valve sections instead of a complete thyristor valve have been defined; c) The requirement has been added that if, following a type test, one thyristor level has become short-circuited, then the failed level shall be restored and this type test repeated; d) The time period of increasing the initial test voltage from 50 % to 100 % during type a.c. dielectric tests on TSC, TCR or TSR valves has been set equal to approximately 10 s; e) The duration of test voltage Uts2 during type a.c.-d.c. dielectric tests between TSC valve terminals and earth as well as the duration of test voltage Utvv2 during dielectric tests between TSC valves (for MVU only) has been changed from 30 min to 3 h; f) The reference on the number of pulses per minute of the periodic partial discharge recorded during a.c.-d.c. dielectric tests on TSC valves and exceeding the permissible level has been deleted.


Current Stage code 6060
Current Stage code date 2011-06-10
Current Stage code deadline 2012-02-26
Deadline date for vote  


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IEC Technical Body IEC/SC 22F
Reference Document IEC 61954:2011 (EQV)
ICS 29.240.99 - Other equipment related to power transmission and distribution networks
31.080.20 - Thyristors
Keywords Static; VAR; Compensator;Thyristor; Valve
Note Publication editing allocated to * Supersedes EN 61954:1999 + A1:2003
Special National Condition(s)  


Categories - Aspects
Product Life Cycle


Deadline Date
6060 2011-06-10 2012-02-26 export to doc file  EN  FR  DE
5099 2011-05-26 2011-06-23  
5060 2011-01-21 2011-01-31 export to doc file  EN
5020 2010-03-05 2010-08-06  
1090 2010-03-02 2010-03-05  

Implementation Dates

date of Ratification (DOR) (1) 2011-05-26
date of Availability (DAV) (2) 2011-06-10
date of Announcement (DOA) (3) 2011-08-26
date of Publication (DOP) (4) 2012-02-26
date of Withdrawal (DOW) (5) 2014-05-26


Supersedes EN 61954:1999
EN 61954:1999/A1:2003
Superseded by  
Normative reference (6) EN 60060-1
EN 60060-2
EN 60071-1:2006
EN 60270
IEC 60700-1:2008

(1) Date of ratification (dor) date when the Technical Board notes the approval of an EN (and HD for CENELEC), from which time the standard may be said to be approved

(2) Date of availability (dav) date when the definitive text in the official language versions of an approved CEN/CENELEC publication is distributed by the Central Secretariat

(3) Date of announcement (doa) latest date by which the existence of an EN (and HD for CENELEC), a TS or a CWA has to be announced at national level

(4) Date of publication (dop) latest date by which an EN has to be implemented at national level by publication of an identical national standard or by endorsement

(5) Date of withdrawal (dow) latest date by which national standards conflicting with an EN (and HD for CENELEC) have to be withdrawn

(6) This list of normative references is purely indicative. The only official list of normative reference is the list of the published standard.