BS EN 61558-2-20:2011 PDF

1   Scope

Replacement:

This part of IEC 61558 deals with the safety of small reactors for general applications.

NOTE 1 Safety includes electrical, thermal and mechanical aspects.

Unless otherwise specified, from here onward, the term transformer or reactor covers small reactors . This part is applicable to stationary or portable , single-phase or polyphase, air-cooled (natural or forced) general purpose reactors including alternating current, premagnetised and current compensated independent or associated reactors . The rated supply voltage does not exceed 1 000 V a.c. or 1 500V ripple-free d.c., the rated supply frequency and the internal operational frequencies do not exceed 1 MHz. The rated power does not exceed:

— 25 kVAR a.c. (25 kW d.c.) for single-phase reactors ,

— 50 kVAR a.c. (50 kW d.c.) for poly-phase reactors .

This part is applicable to reactors without limitations of the rated power subject to an ...