British Standards Institution

With over 100 years of experience the British Standards Institute is recognised as the UK’s National standards body. Their committees work with the manufacturing and service industries, government, businesses and consumers to facilitate the production of British, European and International standards.

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Documents by this publisher

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Series details	Title	Year	Status
BS EN 61557-7:2007	Electrical safety in low voltage distribution systems up to 1000 V a.c. and 1500 V d.c. Equipment for testing, measuring or monitoring of protective measures. Phase sequence (Withdrawn)	2007	Withdrawn
BS EN 61557-7:2022	Electrical safety in low voltage distribution systems up to 1000 V a.c. and 1500 V d.c. - Equipment for testing, measuring or monitoring of protective measures. Phase sequence	2022	Current
BS EN 61557-8:1997	Electrical safety in low voltage distribution systems up to 1000 V a.c. and 1500 V d.c. - Equipment for testing, measuring or monitoring of protective measures. Insulation monitoring devices for IT systems (Withdrawn)	1997	Withdrawn
BS EN 61557-8:2007	Electrical safety in low voltage distribution systems up to 1000 V a.c. and 1500 V d.c. Equipment for testing, measuring or monitoring of protective measures. Insulation monitoring devices for IT systems (Withdrawn)	2007	Withdrawn
BS EN 61557-8:2015	Electrical safety in low voltage distribution systems up to 1 000 V a.c. and 1 500 V d.c. - equipment for testing, measuring or monitoring of protective measures. Insulation monitoring devices for IT systems (IEC 61557-8:2014) (incorporating corrigendum May 2016)	2015	Current
BS EN 61557-8:2015	Electrical safety in low voltage distribution systems up to 1000 V a.c. and 1500 V d.c. Equipment for testing, measuring or monitoring of protective measures. Insulation monitoring devices for IT systems	2015	Withdrawn
BS EN 61557-9:2000	Electrical safety in low voltage distribution systems up to 1 kV a.c. and 1,5 kV d.c. - Equipment for testing, measuring or monitoring of protective measures. Equipment for insulation fault location in IT systems (Withdrawn)	2000	Withdrawn
BS EN 61557-9:2009	Electrical safety in low voltage distribution systems up to 1000 V a.c. and 1500 V d.c. Equipment for testing, measuring or monitoring of protective measures. Equipment for insulation fault location in IT systems (Withdrawn)	2009	Withdrawn
BS EN 61557-9:2015	Electrical safety in low voltage distribution systems up to 1000 V a.c. and 1500 V d.c. - equipment for testing, measuring or monitoring of protective measures. Equipment for insulation fault location in IT systems (IEC 61557-9:2014) (Incorporating corrigendum January 2017)	2015	Current
BS EN 61557-9:2015	Electrical safety in low voltage distribution systems up to 1000 V a.c. and 1500 V d.c. Equipment for testing, measuring or monitoring of protective measures. Equipment for insulation fault location in IT systems	2015	Withdrawn
BS EN 61557-10:2001	Electrical safety in low voltage distribution systems up to 1000 V a.c. and 1500 V d.c. - Equipment for testing, measuring or monitoring of protective measures. Combined measuring equipment for testing, measuring or monitoring of protective measures (Withdrawn)	2001	Withdrawn
BS EN 61557-10:2013	Electrical safety in low voltage distribution systems up to 1000 V a.c. and 1500 V d.c. - Equipment for testing, measuring or monitoring of protective measures. Combined measuring equipment for testing, measuring or monitoring of protective measures	2013	Current
BS EN 61557-15:2014	Electrical safety in low voltage distribution systems up to 1000 V a.c. and 1500 V d.c. - equipment for testing, measuring or monitoring of protective measures. Functional safety requirements for insulation monitoring devices in IT systems and equipment for insulation fault location in IT systems	2014	Current
BS EN 61558-1:1998	Safety of power transformers, power supply units and similar. General requirements and tests (AMD 10136) (AMD 15086) (Withdrawn)	1998	Withdrawn
BS EN 61558-1:2005	Safety of power transformers, power supplies, reactors and similar products. General requirements and tests (+ AMD 16909)	2005	Withdrawn
BS EN 61558-1:2005	Safety of power transformers, power supplies, reactors and similar products. General requirements and tests (+ AMD 16909, AMD September 2009) (Withdrawn)	2005	Withdrawn
BS EN 61558-2-1:1998	Safety of power transformers, power supply units and similar. Particular requirements for separating transformers for general use (AMD 10138) (Withdrawn)	1998	Withdrawn
BS EN 61558-2-1:2007	Safety of power transformers, power supplies, reactors and similar products. Particular requirements and tests for separating transformers and power supplies incorporating separating transformers for general applications	2007	Current
BS EN 61558-2-2:1998	Safety of power transformers, power supply units and similar. Particular requirements for control transformers (AMD 10139) (AMD 15087) (Withdrawn)	1998	Withdrawn
BS EN 61558-2-3:2000	Safety of power transformers, power supply units and similar devices. Particular requirements for ignition transformers for gas and oil burners (Withdrawn)	2000	Withdrawn

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