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BSI
22/30439450 DC
En Vigor
2022-03-30
BS EN 61643-21. Low voltage surge protective devices. Part 21. Surge
protective devices connected to telecommunications and signalling
networks. Performance requirements and testing methods
BSI
BS 6997:1990
En Vigor
1990-08-31
Specification for elastomeric toroidal sealing rings ('O'-rings)
manufactured from acrylonitrile-butadiene rubbers complying with BS 6996
BSI
BS ISO 6123-1:2015
En Vigor
2015-08-31
Rubber or plastics covered rollers. Specifications. Requirements for hardness
BSI
24/30498336 DC
En Vigor
2024-08-02
BS EN IEC 61869-2 Instrument transformers. Part 2. Additional
requirements for current transformers
