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FZN25-12 vacuum load switch
Release time:2015-06-05 20:38 Read:Time


 

●Overview


FZN25-12 vacuum load switch is applicable to three-phase ac 50 hz or ring network terminal equipment, power supply and industrial utilization and used as load control and short circuit protection, load switch points load, closed loop current, no-load transformer and cable charging electric current. Combination can open break till any current of rated short circuit current. Using direct acting isolation clearance and vacuum arcing chamber linkage. Have the function of manual and electric.
Unique design of transmission structure arc extinguish chamber only at the instant of the close and open circuit under high pressure, small volume, light weight.
FZN25、FZRN25 achieve disposable isolation clearance and arcing chamber operation
FZN25、FZRN25 In the static contact and moving contact between coils with grounding grounding switch valve, not only ensure the safe and convenient for maintenance.



●Main technical parameters
Serial number Project Company Parameter
FZN25-12D/T630-20 FZN25-12D/T125-31.5
1 Rated voltage KV 12
2 rated frequency Hz 50
3 Rated current A 630 125
4 Rated insulation level power frequency withstand voltage
(1 Min )
KV The fracture of the arc chamber 30;To earth and interphase 42;Isolated fracture 48
lightning impulse withstand voltage KV To earth and interphase 75;Isolated fracture 85
5 Rated dynamic steady current (peak value) KA 50 ——
6 thermal stability current(4s) KA 20 ——
7 Active load open circuit current rating A 630 125
8 The nominal closed-loop open circuit current A 630 125
9 Cable charging open circuit current rating A 10 10
10 Open circuit no-load transformer capacity KVA 1250 1250
11 The rated short circuit breaking current KA —— 31.5
12 The rated current, rated current A —— 2000
13 Fuse type   —— SDLAJ-12 SFLAJ-12
14 Impactor energy output J ——  
15 Close the current of rated short circuit KA 50
16 Grounding switch dynamic stable current rating KA 50
17 The thermal stability of grounding switch 2 s current KA 20
18 rated voltage of auxiliary loop V AC/CD220;110
19 mechanical life Time 10000

● FZRN25-12D/125-31.5 Vacuum load switch - fuse combination electrical apparatus appearance and installation size

1. Static contact         2. Insulation cover      3valve           4frame           5. Vacuum arcing chamber       6. Coils           7. Fuse       8 Energy storage     9shaft grounding knife shaft     10. Operation panel


● FZRN25-12D/630-20 Vacuum load switch - fuse combination electrical apparatus appearance and installation size



1. Static contact         2. Insulation cover      3valve           4frame           5. Vacuum arcing chamber       6. Coils           7. Fuse       8 Energy storage     9shaft grounding knife shaft     10. Operation panel
Last one:FZN21 Indoor vacuum load switch and fuse combination electri
 
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