Philippines - DTI-BPS Adopts New International Standard on Circuit Breakers
Effective March 4, 2020
The Department of Trade and Industry’s Bureau of Philippine Standards (DTI-BPS) adopts the international standard of the International Electro Technical Commission (IEC), IEC 60947-:2020 Low-voltage switchgear and control gear – Part 2: Circuit breakers, as Philippine National Standard, PNS IEC 60947-2:2020 through the recommendation of the Technical Committee on Electrical Wiring Devices (BPS/TC10). This standard cancels and replaces PNS IEC 60947-2:2015.
PNS IEC 60947-2:2020 specifies the characteristics of circuit-breakers, the conditions with which circuit-breakers shall comply with reference to: 1) operation and behavior in normal service; 2) operation and behavior in case of overload and operation and behavior in case of short-circuit, including co-ordination in service (selectivity and back-up protection); 3) dielectric properties, the tests intended for confirming that these conditions have been met and the methods to be adopted for these tests, and the information to be marked on or given with the product.
The standard applies to circuit-breakers, intended to be installed and operated by instructed or skilled persons with the main contacts intended to be connected to circuits and the rated voltage not to exceed 1 000 V a.c. or 1 500 V d.c.. Circuit breakers rated above 1 000 V a.c. but not exceeding 1 500 V a.c may also be tested to this standard. It also contains additional requirements for integrally fused circuit-breakers. The standard is applicable to circuit-breakers whatever the rated currents, the method of construction or the proposed application.