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FZN25-12D Indoor AC High Voltage Vacuum Load Break Switch

Summary
This product applies vacuum arc- extinguishing chamber. It features with reliable operation, long electric life and easy maintenance, breaking and making power supply frequently. The operation mechanism is inside switch gear combining
disconnector, load break switch and earthing switch into one. It has compactable dimension and small weight.

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Product name:FZN25-12D Indoor AC High Voltage Vacuum Load Break Switch

Summary
This product applies vacuum arc-extinguishing chamber. It features with reliable operation, long electric life and easy maintenance, breaking and making power supply frequently. The operation mechanism is inside switch gear combining disconnector, load break switch and earthing switch into one. It has
compactable dimension and small weight.The disconnect gap lies in a serial with the vacuum arc-extinguishing cham ber.The large dynamic stable current and thermal st able curre nt, the interlinked procedures assure the operation coherently.

Busbar and load break switch are separated fully by taper fixed co ntact, insulatin g cover and valve .Vacuum circuit break switch, earthing switch, valve and cubicle door are interlocked according to 5 protections to preven from miss- operation. The spring storage operation mechanism can both operate by dependent manual and power to realize remote control. The CO operating power can be AC or DC source.Manual operation is generally on the right of switch, but can be changed to the left or obverse according to user's requirement.

Ambient condition

1. Altitude: 1000m;
2. Ambient temperature: -25 ~+40 ;
3. Relative humidity: daily average 95 , monthly average 90 ;
4. Earthquake intensity: 8 degree;
5. Applicable occasions should free from inflammables, explosives,corrosives and severe vibration.


No. Item Unit FZN25-12D
/T630-20
FZRN25-12D/T200-31.5
1 Rated voltage kv 12
2 Rated current A 630 ≦200
3 Rated frequency HZ 50/60
4 Rated
insulating
level
1min. PF withstand voltage KV arcing chamber gaps:30, phase 
to earth, phase to phase:42, 
across open contacts:48
5 lightning impulse 
withstand voltage(peak)
KV phase to phase:75, 
across open contacts:85
6 Rated short-time withstand current
(thermal stable current)
KA 20 *
7 Rated short-circuit duration S 4 *
8 Rated peak withstand current
(dynamic stable current )
KA 50 *
9 Rated active load breaking current A 630 *
10 Rated breaking current of closed-loop A 630 *
11 Rated breaking current of charging cable A 10 *
12 Rated breaking no-load transformer capacity KVA 1600
13 Rated short-circuit breaking current KA * 31.5
14 Rated transfer current A * 2000
15 Fuse model * SDLAJ-12 SFLAJ-12
16 Output power of impinger J * *
17 Rated short-circuit making current KA 50
18 Rated short-time withstand current 
of earthing switch(thermal stable current)
KA 20
19 Rated short-circuit duration of earthing switch S 2
20 Rated voltage of auxiliary loop V 220, 110
21 Mechanical life TIEMS 1000

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