BS EN 61558-2-6:1998 Safety of power transformers, power supply units and similar - Particular requirements for safety isolating transformers for general use
Replacement:
This part 2 of IEC 61558 applies to stationary or portable, single-phase or polyphase, air-cooled safety isolating transformers, associated or otherwise, having a rated supply voltage not exceeding 1000 V a.c. and rated frequency not exceeding 500 Hz, the rated output not exceeding:
- 10 kVA for single-phase transformers;
- 16 kVA for polyphase transformers.
This standard is also applicable to safety isolating transformers without limitation of the rated output; however such transformers are considered as special transformers and are subjected to an agreement between the purchaser and the supplier.
The no-load output voltage and the rated output voltage does not exceed:
50 V a.c. r.m.s. and/or 120 V ripple-free d.c.
between conductors or between any conductor and earth.
This standard is applicable to dry type transformers. The windings may be encapsulated or non-encapsulated.
BS EN 61558-2-6:1998 history
2010BS EN 61558-2-6:2010 Safety of transformers, reactors, power supply units and similar products for supply voltages up to 1100 V. Particular requirements and tests for safety isolating transformers and power supply units incorporating safety isolating transformers
2006BS EN 61558-1:2005+A1:2009 Safety of power transformers, power supplies, reactors and similar products — Part 1: General requirements and tests
2006BS EN 61558-1:2005 Safety of power transformers, power supplies, reactors and similar products - Part 1: General requirements and tests
1998BS EN 61558-1:1998 Safety of power transformers, power supply units and similar - General requirements and tests
1996BS EN 60742:1996 Isolating transformers and safety isolating transformers - Requirements