GB/T 24838-2018 1 100 kV high-voltage alternating-current circuit-breakers
GB/T 24838-2018 1 100 kV high-voltage alternating-current circuit-breakers
Basic Information
Scope
This standard specifies the usage conditions, rated values, design and structure, testing, selection guidelines, transportation, storage, installation, operation, and maintenance requirements for 1,100 kV high-voltage AC circuit breakers.
This standard applies to high-voltage AC circuit breakers designed for installation outdoors or indoors and operating in an extra-high voltage power system with a frequency of 50 Hz and a nominal voltage of 1,000 kV.
This standard also applies to the operating mechanisms and auxiliary equipment of 1,100 kV circuit breakers.
Except for circuit breakers with single-pole automatic reclosing, circuit breakers with predefined inter-pole phase differences are not included in the scope of this standard.
Bypass circuit breakers connected in parallel with line-mounted capacitors and their protective equipment are not included in the scope of this standard.