LOW - VOLTAGE SWITCHGEAR AND CONTROLGEAR - PART 4-1: CONTACTORS AND MOTOR- STARTERS - ELECTROMECHANICAL CONTACTORS AND MOTOR-STARTERS (FIRST REVISION) (IEC 60947-4-1:2002, IDT)
This Malaysian Standard applies to the types of equipment listed in 1.1 and 1.2 whose main
contacts are intended to be connected to circuits the rated voltage of which does not exceed
1 000 V a.c. or 1 500 V d.c.
Starters and/or contactors dealt with in this standard are not normally designed to interrupt short-circuit currents. Therefore, suitable short-circuit protection (see 9.3.4) shall form part of the installation but not necessarily of the contactor or the starter.
In this context, this standard gives requirements for:
– contactors associated with overload and/or short-circuit protective devices;
– starters associated with separate short-circuit protective devices and/or with separate
short-circuit and integrated overload protective devices;
– contactors or starters combined, under specified conditions, with their own short-circuit
protective devices. Such combinations, e.g. combination starters (see 3.2.7) or protected
starters (see 3.2.8) are rated as units.
Circ
Published
• (none) / (none) / (none)
PDF
15/05/2019
207
NSC 05 - Generation, Transmission & Distribution of Energy
