STB PDF

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 - Effectiveness of residual current devices (RCD) in TT, TN and IT systems. Original standard BS EN 61557-6-2007 in PDF full version. Additional info + preview on request

Document status: Replaced by STB BS EN IEC 61557-6-2021

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. Original standard BS EN 61557-7-2007 in PDF full version. Additional info + preview on request

Document status: Replaced by STB BS EN 61557-7-2022 + A1-2023

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 - Equipment for insulation fault location in IT systems. Original standard BS EN 61557-9-2015 in PDF full version. Additional info + preview on request

Document status: Withdrawn

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 - Equipment for insulation fault location in IT systems. Original standard BS EN 61557-9-2015 (2017) in PDF full version. Additional info + preview on request

Document status: Withdrawn

Safety of power transformers, power supplies, reactors and similar products - General requirements and tests. Original standard BS EN 61558-1-2005 + A1-2009 in PDF full version. Additional info + preview on request

Document status: Withdrawn

Safety of power transformers, power supply units and similar - Particular requirements for separating transformers for general use. Original standard BS EN 61558-2-1-1998 (1999) IEC 61558-2-1-1997 in PDF full version. Additional info + preview on request

Document status: Active