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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Series details	Title	Year	Status
BS EN 61549:2003	Miscellaneous lamps (+A3:2012)	2003	Current
BS EN 61557-1:1997	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. General requirements (Withdrawn)	1997	Withdrawn
BS EN 61557-1:2007	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. General requirements (Withdrawn)	2007	Withdrawn
BS EN 61557-2:1997	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 Insulation resistance (Withdrawn)	1997	Withdrawn
BS EN 61557-2:2007	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 Insulation resistance (Withdrawn)	2007	Withdrawn
BS EN 61557-3:1997	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. Loop impedance (Withdrawn)	1997	Withdrawn
BS EN 61557-3:2007	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. Loop impedance (Withdrawn)	2007	Withdrawn
BS EN 61557-4:1997	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. Resistance of earth connection and equipotential bonding (Withdrawn)	1997	Withdrawn
BS EN 61557-4:2007	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. Resistance of earth connection and equipotential bonding (Withdrawn)	2007	Withdrawn
BS EN 61557-5:1997	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. Resistance to earth (Withdrawn)	1997	Withdrawn
BS EN 61557-5:2007	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. Resistance to earth (Withdrawn)	2007	Withdrawn
BS EN 61557-6:1998	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. Residual current devices (RCD) in TT, TN and IT systems (Withdrawn)	1998	Withdrawn
BS EN 61557-6:2007	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. Effectiveness of residual current devices (RCD) in TT, TN and IT systems (Withdrawn)	2007	Withdrawn
BS EN 61557-7:1997	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. Phase sequence (Withdrawn)	1997	Withdrawn
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 (+A1:2023)	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

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