European Committee for Electrotechnical Standardization

Low-voltage switchgear and controlgear Part 6-1: Multiple function equipment – Transfer switching equipment - Incorporates Amendment A1: 2014
 N EN 60947-6-1

Annotation

This part of IEC 60947 applies to transfer switching equipment (TSE) to be used in power systems for transferring a load supply between a normal and an alternate source with a supply interruption during transfer, the rated voltage of which does not exceed 1 000 V a.c. or 1 500 V d.c.

It covers:

- manually operated transfer switching equipment (MTSE);

- remotely operated transfer switching e quipment (RTSE);

- automatic transfer switching equipment (ATSE).

It covers TSE provided with or without an enclosure. Devices necessary for the control (e.g. control switches, etc.) and the protection (e.g. circuit- breakers, etc.) of a TSE are covered by the relevant IEC standards.

Note 1 TSE used only for emergency lighting may be subject to specific rules and/or legal requirements and are not, therefore, covered by this standard.

The object of this part of IEC 60947 is to state:

1) The characteristics of the equipment.

Text deleted

2) The conditions of the equipment with respect to:

a) operation for which the equipment is intended;

b) operation and behaviour in case of specified abnormal conditions, for example, short- circuit;