Legislation/Applicable standard

ReferenceTitle
LVS EN 61557-7:2007Electrical 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 - Part 7: Phase sequence
LVS EN 61557-8:2007Electrical 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 - Part 8: Insulation monitoring devices for IT systems
LVS EN 61557-9:2009Electrical 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 - Part 9: Equipment for insulation fault location in IT systems (IEC 61557:2009)
LVS EN 61558-1:2002 +A1Safety of power transformers, power supply units and similar - Part 1: General requirements and tests
LVS EN 61558-1:2002 +A1 /A11:2003Safety of power transformers, power supply units, reactors and similar products - Part 1: General requirements and tests
LVS EN 61558-1:2002 +A1 /AC:2003Safety of power transformers, power supply units, reactors and similar products - Part 1: General requirements and tests
LVS EN 61558-1:2006Safety of power transformers, power supplies, reactors and similar products - Part 1: General requirements and tests
LVS EN 61558-1:2006 /A1:2009Safety of power transformers, power supplies, reactors and similar products - Part 1: General requirements and tests (IEC 61558-1:2005/A1:2009)
LVS EN 61558-1:2006 /AC:2006Safety of power transformers, power supplies, reactors and similar products - Part 1: General requirements and tests
LVS EN 61558-2-1:2007Safety of power transformers, power supplies, reactors and similar products - Part 2-1: Particular requirements and tests for separating transformers and power supplies incorporating separating transformers for general applications
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