International Electrotechnical Commission

Circuit breakers – Switched protective earth portable residual current devices for class I and battery powered vehicle applications - Edition 1.0
 N 62335

Annotation

This International Standard applies to portable devices intended for use with vehicles having class 1 insulation and battery powered vehicle applications having battery charging units. They have a switched protective earth (SPE) and hereafter are referred to as SPE-PRCDs.

The SPE-PRCD consists of a plug, a residual current device (RCD) and a portable socket outlet.

This standard applies to portable devices performing simultaneously the functions of detection of the residual current, of comparison of the value of this current with the residual operating value and of opening of the protected circuit when the residual current exceeds this value.

In addition to the RCD function, the SPE-PRCDs address incorrect supply connections resulting in a hazardous live PE and/or supply failure (for example: loss of supply PE or loss of supply N). These SPE-PRCDs are intended for application only on TN and TT systems.

These SPE-PRCDs will not operate if used on IT or other unearthed systems such as isolated winding generator or isolating transformer. These SPE-PRCDs, due to the PE effectively being an open supply conductor, will not function to close the contacts on an IT system.

NOTE 1 For applications where due to the supply system a SPE-PRCD cannot operate a PRCD (according to IEC 61540) may be used.

SPE-PRCDs are not required to incorporate overcurrent protection.

SPE-PRCDs are intended to be supplied from single-phase or two-phase circuits with rated currents not exceeding 16 A for rated voltages not exceeding 250 V a.c., or with rated current not exceeding 32 A for rated voltages not exceeding 130 V a.c. to earth.