GB 1984-2003
High-voltage alternating-current circuit-breakers
2015-01
- Standard No.
- GB 1984-2003
- Language
- Chinese
- Release Date
- 2003
- Published By
- General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
- Replace By
- GB 1984-2014
- GB/T 1984-2014
- Lastest
- GB 1984-2014
- GB/T 1984-2014
- Scope
- This standard applies to AC circuit breakers designed to be installed indoors or outdoors and operating in systems with a frequency of 50 Hz and a voltage of 3000 V and above. This standard applies only to three-pole circuit breakers in three-phase systems and single-pole circuit breakers in single-phase systems. For two-pole circuit breakers used in single-phase systems and for frequencies below 50 Hz, the agreement between the manufacturer and the user shall be followed. This standard also applies to the operating mechanism of the circuit breaker and its auxiliary equipment. However, this standard does not involve circuit breakers that only rely on manual operation of the closing mechanism, because it cannot specify the rated short-circuit making current, and from the perspective of safety, this method of manual operation alone should not be advocated. This standard does not deal with circuit breakers in mobile power stations for electric traction equipment. They are included in IEC 60077 [4]. Generator circuit breakers installed between the generator and the step-up transformer are also excluded from the scope of this standard. Switching of inductive loads is covered by IEC 61233. Circuit-breakers with predetermined pole-to-pole asynchronicity, other than single-pole reclosing circuit-breakers, are not included in the scope of this standard. This standard does not deal with self-tripping circuit-breakers having mechanical tripping devices or devices that cannot be disabled. Bypass circuit breakers in parallel with line series capacitors and their protective equipment are not included in the scope of this standard, they are included in IEC 60143-2 [6].
GB 1984-2003 history
- 2014 GB 1984-2014 High-voltage alternating-current circuit-breakers
- 2003 GB 1984-2003 High-voltage alternating-current circuit-breakers
- 1987 GB/T 7675-1987 The capacitor banks switching tests for A.C. high-voltage circuit-breaker