IEC 60931-1 Ed. 3.0 b:2025

Full Description

IEC 60931 is applicable to both non-self-healing capacitor units and non-selfhealing
capacitor banks intended to be used, particularly, for power-factor correction of AC
power systems having a rated voltage up to and including 1 000 V and frequencies 15 Hz to
60 Hz.
This document also applies to capacitors intended for use in power filter circuits. Additional
definitions, requirements, and tests for filter capacitors are given in Annex A.
The following capacitors are excluded from this part of IEC 60931:
– Shunt power capacitors of the self-healing type for AC systems having a rated voltage up
to and including 1 000 V (IEC 60831 series [1]1)
– Shunt capacitors for AC power systems having a rated voltage above 1 000 V (IEC 60871
series [2])
– Power capacitors for induction heating installations (IEC 60110 series [3])
– Series capacitors for power systems (IEC 60143 series [4])
– Capacitors for motor applications (IEC 60252 series [5])
– Coupling capacitors and capacitor dividers (IEC 60358 series [6])
– Capacitors for power electronics (IEC 61071 [7])
– Small AC capacitors to be used for fluorescent and discharge lamps (IEC 61048 [8] and
IEC 61049 [9])
– Capacitors for suppression of radio interference (under consideration)
– Capacitors intended to be used in various types of electrical equipment and thus considered
as components
– Capacitors intended for use with DC voltage superimposed on the AC voltage
– Shunt power capacitors of the self-healing type for AC systems having a rated voltage above
1 000 V (IEC 63210 [10])
Accessories such as insulators, switches, instrument transformers, fuses, etc., are to be in
accordance with the relevant IEC standards.
The purpose of this document is:
a) to formulate uniform rules regarding performances, testing and rating;
b) to formulate specific safety rules;
c) to provide a guide for installation and operation.