GB3804-2004 《3-63KV AC high voltage load break switch》GB16926-2009 《AC high voltage load break switch-fuse combination apparatus》
Altitude: no more than 1000m; Ambient temperature: -10℃一+40℃; Relative humidity: daily average no more than 95％, monthly average no more than 90％; Earthquake degree: less than 8℃
FKRN24D when load break switch equip with high voltage current limited fuse(with striker), it comes into being load break switch and fuse combination apparatus, acting as protecting and control apparatus for transformers, cable and overhead wiring. When a phase or multiphase fuse fusing, load break switch automatic brake three-phase.
These series load break switch are especially applicable in rural, urban terminal substation and prefabricated substations, as well as ring network power supply.
|2||Rated power frequency||Hz||50|
|4||Maximum rated current(fuse)||A||80|
|5||Rated active load open circuit current, rated closed-loop open circuit current||A||630|
|6||Rated short-time withstand current(2s)||kA||20|
|7||Rated short circuit making current, rated peak withstand current||kA||50|
|8||1min PF withstand voltage(phase to phase, phase to earth, across open contacts)||kV||65/79|
|9||Lightning impluse withstand voltage(peak)(phase to phase, phase to earth, across open contacts)||kV||125/145|
|10||Rated cable charging breaking current||A||16|
|12||Rated breaking transfer current||A||1050|
|13||Rated short circuit breaking current(fuse)||kA||31.5|
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