FN7-24 INDOOR HV LOAD BREAK SWITCH

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Product Detail

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Outline

FN7-24(DR) indoor HV load break switch applies to electric system with 24kV rated voltage and three-phase AC 50/60Hz, for connecting and breaking load current and short circuit current.

Use Conditions

A. Altitude: ≤1000m.

B. Ambient temperature: -25℃~+40℃.

C. Relative humidity: daily average ≤95%, monthly average ≤90%.

D. No frequent serious vibration.

Main Parameters

NO.	Items	Unit	Value
1	rated voltage	kV	24
2	rated frequency	Hz	50
3	rated current	A	400, 630, 1250
4	rated active load breaking current	A	400, 630, 1250
5	Rated closed loop breaking current	A	400, 630, 1250
6	5% rated active load breaking current	A	20, 31.5, 62.5
7	rated cable charging breaking current	A	10
8	1min power frequency withstand voltage: phase-to-phase, phase to earth/ fracture	kV	50/60
9	lightning impulse withstand voltage: phase-to-phase, phase to earth/ disconnecting fracture	kV	125/145
10	rated short time withstand current (thermal stability)	kA	16, 20, 25
11	rated short circuit duration	s	1
12	rated peak withstand current	kA	40, 50, 63
13	rated short circuit making current	kA	40, 50, 63
14	mechanical life	times	2000