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Relevant Standards

IEC Title IS BS
60056/1987 High voltage alternating current circuit breakera 13118/1991 BS 5311/1996
60298/1990 A.C. metal enclosed switchgear and controlgear for 3427/1991 BS EN 60298/1996
rated voltages above 1 kV and up to and including 52 kV
605 17/1990 Gas insulated metal-enclosed switchgear for rated voltages of - BS EN 60517/1997
72.5 kV and above
60947-2/1998 Low voltage switchgear and controlgear, 13947-2/1993 BS EN 60947-
Circuit breakers 2/1996

Related US Standards ANSVNEMA and IEEE
NEMA/SG-3/1995 Lnw voltage power circuit hreakers
NEMA/SG-4/1990 A.C. HV circuit breakers
NEMA/SG-6/1995 Power switching equipment
ANSI C 37.06/1994 A.C. HV circuit breakers rated on a symmetrical current basis - preferred ratings and related required capabilities
ANSI C 37.16/1998 Low voltage power circuit breakers - preferred ratings and application recommendations

Notes
1 In the tables of Relevant Standards in this book while the latest editions of the standards are provided, it ia pusaible that reviaed ediliuns
have become available. With the advances of technology and/or its application, the updating of standards is a continuous process by
different standards organizations. It is therefore advisable that for more authentic references, readers should consult the relevant
organizations for the latest version of a standard.
2 Somc of thc BS or IS standards mcntioncd against IEC may not bc idcntical
3 The year noted against each standard may also refer to the year of its last amendment and not necessarily the year of publication.

Further reading 4 Bouilliez, O., ‘Mastering switching voltage transients with
SF, switchgear’, Cahiers techniques Merlin Gerin, No. 125.
5 ‘Current chopping phenomena of MV circuit breakers’, IEEE
I Bettge, H., ‘Design and construction of vacuum interrupters’, Transactions, PAS -96, No. 1 (1977).
Siemens Circuit, XVIII. No. 4 (1983). 6 Pelenc, Y. ‘Review of the main current interruption techniques’
2 Blower, R.W., Distribution Switchgear, Collins Professional Voltas Limited, Switchgear Division, India.
and Technical Books, 1986. 7 Ramaswamy, R., ‘Vacuum circuit breakers’, Siemens Circuit,
3 Blower, R.W., Cornick, K.J. andReece, M.P. ‘Use ofvacuum XXIII, April (1 988)
switchgear for the control of motors and transformers in 8 Telander, S.H., Wilhelm M.R. and Stump, K.B., ‘Surge limiters
industrial syatenia’, E/ec/ric Power Applictrrions, 2, Nu. 3. for vacuum circuit breaker switchgear’, CH 2279-8/86/0000-
June (1979) 00375 1 .00, IEEE (1986)