GB/T 47158-2026 Shunt power capacitors of the self-healing type for AC systems having a rated voltage above 1 000 V
GB/T 47158-2026 Shunt power capacitors of the self-healing type for AC systems having a rated voltage above 1 000 V
Basic Information
Scope
This document specifies the requirements for the use of self-healing parallel power capacitors in AC systems with a nominal voltage of more than 1,000 V, including conditions of use, quality requirements, test categories, insulation levels, marking, installation and operation guidelines, and describes the corresponding test methods.
This document applies to self-healing capacitor units and self-healing capacitor banks specifically designed to improve power factor in AC power systems with a nominal voltage of more than 1,000 V and a frequency of 15 Hz to 60 Hz.
This document does not apply to the following capacitors:
— Self-healing parallel power capacitors for AC systems with a nominal voltage of 1,000 V or less [see GB/T 12747 (all parts)];
— Non-self-healing parallel power capacitors for AC systems with a nominal voltage of 1,000 V or less [see GB/T 17886 (all parts)];
— Non-self-healing parallel power capacitors for AC systems with a nominal voltage of more than 1,000 V [see GB/T 11024 (all parts)];
— Power capacitors for induction heating devices [see GB/T 3984 (all parts)];
— Series capacitors [see GB/T 6115 (all parts)];
— AC motor capacitors [see GB/T 3667 (all parts)];
— Coupling capacitors and capacitive dividers [see GB/T 19749 (all parts)];
— Power electronic capacitors (see GB/T 17702);
— Small AC capacitors for fluorescent lamps and discharge lamps (GB/T 18489 and GB/T 18504);
— Capacitors for suppressing radio interference;
— Capacitors intended for use as components in various electrical equipment;
— Capacitors intended for use under DC voltages superimposed with AC voltages.
Requirements for ancillary devices such as insulators, switches, transformers, external fuses, and external protectors are specified in corresponding documents and are not included in the scope of this document.
The objectives of this document are:
— To establish unified rules for the performance, specifications, and