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Indoor HV Air Load Break Switch And Fuse Combination Apparatus

Model: FKRN24D

Description

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.

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Standard

GB3804-2004 《3-63KV AC high voltage load break switch》GB16926-2009 《AC high voltage load break switch-fuse combination apparatus》
Normal Working Condition

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℃

Technical Parameter
Drawing

No.	Item	Unit	Data
1	Rated voltage	kV	24
2	Rated power frequency	Hz	50
3	Rated current	A	630
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
11	Mechanical life	time	2000
12	Rated breaking transfer current	A	1050
13	Rated short circuit breaking current(fuse)	kA	31.5