This Part applies to transfer switching equipment (TSE) to be used in power systems with interruption of the supply to the load during transfer, the rated voltage of which does not exceed 1000V a.c. or 1500V d.c.
It covers:
——Manually operated switching equipment (MTSE);
——Remotely operated transfer switching equipment(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 shall comply with the relevant national standards.
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 is to state:
1) The characteristics of the equipment:
a) specific ) ) TSE;
b) TSE the main part ) of which is covered by other GB 14048 product standards.
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;
c) dielectric properties.
3) The tests intended to confirm that these conditions have been met and the methods for
4) The data to be marked on the equipment and provided by the manufacturer.
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