Fzn25 12kv Indoor High Voltage Load Break Switch Lbs with fuse

Item No.: 00213
high-voltage load switch is a switchgear in the power distribution system that can close, carry and open currents and pass short-circuit currents, and is a type of splitting switch with special arc-extinguishing contacts, arc-extinguishing devices
Description
Description
Indoor high voltage load break switch FZN25 details listed as belows:
 

Application

It is used in the ring network city distribution and industrial equipment of 12KV and three-phase AC 50Hz to cortrol load and
short-circuit. Because the switch with fuse protecting transformer etc more reliably than circuit breaker. It is especialy
suitable for ring network clouble radial distribution and package substation.
NO.
Items
Unit
Data
FZN25-12D/T630-20
FZRN25-12D/T125-31.5
1
Rated voltage
KV
12
2
Rated frequency
Hz
50
3
Rated Current
A
630
200
4
Rated insulation level
1 min power frequency withstanded insulation voltage
KV
Arc chamber between open contacts 30: To earth, phase to phase 42;Isolation between open contacts 48
Lightning impulse withstand voltage
KV
To earth phase to phase 75: solation between open contact 85
5
Rated short-time withstand current
KA
20
 
6
Rated short circuit duration
S
4
 
7
Rated peak withstand curent
KA
50
 
8
Rated active load breaking current
A
630
 
9
Rated closed-loop breaking current
A
630
 
10
Rated cable charging breaking current
A
10
11
Rated breaking no-load transformer capacity
KVA
1600
12
Rated short-circuit breaking current
KA
-
31.5
13
Rated transfer current
A
 
2000
14
Fuse Type
 
 
SDLAJ-12 XPNT1-12
15
IImpactor output energy
J
 
1+0.5
16
Rated short circuit dosing current
KA
 
80 (expected peak)
17
Earthing switch rated short-fime withstand current
KA
20
18
Earthing switch rated short circuit duration
S
2
19
Earthing switch rated peak withstand current
KA
50
20
Auxiliary circuit rated voltage
V
≈220V,≈110V
21
Mechanical life
Times
1000

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