BS 6581:1995
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
Common clauses for high-voltage switchgear and controlgear standards
Hardcopy , PDF
01-15-1997
English
12-15-1995
1 Scope
2 Normal and special service conditions
2.1 Normal service conditions
2.2 Special service conditions
3 Definitions
4 Rating
4.1 Rated voltage
4.2 Rated insulation level
4.3 Rated frequency
4.4 Rated normal current and temperature rise
4.5 Rated short-time withstand current
4.6 Rated peak withstand current
4.7 Rated duration of short circuit
4.8 Rated supply voltage of closing and opening
devices and auxiliary circuits
4.9 Rated supply frequency of operating devices and
auxiliary circuits
4 10 Rated pressure of compressed gas supply for
operation
5 Design and construction
5.1 Requirements for liquids in switchgear and
controlgear
5.2 Requirements for gases in switchgear and
controlgear
5.3 Earthing of switching device
5.4 Auxiliary equipment
5.5 Dependent power closing
5.6 Stored energy closing
5.7 Operation of releases
5.8 Low and high pressure interlocking devices
5.9 Na?meplates
6 Type tests
6.1 Dielectric tests
6.2 Radio interference voltage (r.i.v) test
6.3 Temperature rise tests
6.4 Measurement of the resistance of the main
circuit
6.5 Short time withstand current and peak withstand
current tests
7 Routine tests
7.1 Power frequency voltage withstand dry tests on
the main circuit
7.2 Voltage withstand tests on auxiliary and
control circuits
7.3 Measurement of the resistance of the main
curcuit
8 Guide to the selection of switching devices for
service
9 Information to be given with enquireies, tenders and
orders
10 Rules for transport, storage, erection and
maintenance
10.1 Conditions during transport, storage and erection
10.2 Erection
10.3 Maintenance
Annex A - Determination of minimum external creepage
distances of outdoor insulators
Appendix B - Determination of the equivalent r.m.s
value of a short time current during a
short circuit of a given duration
Annex ZA - Special national conditions
Annex ZB - Other international publications quoted in
this standard with the references of the
relevant European publications
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