IEC 61558-2-6
Safety of transformers, reactors, power supply units and similar products for supply voltages up to 1 100 V – Part 2-6: Particular requirements and tests for safety isolating transformers and power supply units incorporating safety isolating transformers
| Organization: | IEC |
| Publication Date: | 1 February 2009 |
| Status: | active |
| Page Count: | 32 |
| ICS Code (Transformers. Reactors): | 29.180 |
scope:
Replacement:
This part 2 of IEC 61558 applies to stationary or portable, single-phase or polyphase, aircooled 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.
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