ICS 621.319.4 : 621.316.93                          ETD29

Reaffirmed 2021

1. Scope

1.1 This specification applies to capacitor units and assembly of capacitor units with accessori(s to form complete capacitor equipment for surge protection of equipment for medium and high voltage power systems up to 33 kV generally having a frequency of up to and including 100 Hz.

1.2 This standard does not cover the following types of capacitors:

a) Small ac capacitors as used for fluorescent and discharge lamps and for electric sign circuits ( see IS: 1569-1976t );

b) Shunt capacitors for power systems ( see IS: 2834-1986t );

c) Capacitors for motor starting applications and the like ( see IS : 2993-1975§ );

d) Radio interference suppression and filter capacitors (see IS : 372311 ).

e) Capacitors intended for control, protection and measurement purposes (for example, coupling capacitors and the like) ( see IS :9348-1979~);

f) Series capacitors ( see IS : 9835-1981** ); and

g) Energy storage capacitors