IACM 12kv High Voltage Outdoor on Load Break Switch
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IACM 12kv High Voltage Outdoor on Load Break Switch

FW1 type Outdoor on load break switch (switch disconnector) contained in this list are destined to switch stub lines and ring main lines or transformers( It can be equipped with MV HRC fuse links as short circuit protection function) or for switching under on load conditions. FW1 type switch comply with IEC/IEEE and DVE-recommendation standards. Especially comply with DIN VDE 0670 part 3 and IEC publication IEC-60265, IEC-129.

Availability:

FW1-12/24/36

Service environment

a)Air temperature: Maximum temperature: +75℃ ; Minimum temperature:-45℃

b)Humidity: Monthly average humidity 95%; Daily average humidity 90% .

c)Altitude above sea level: Maximum installation altitude: 2500m

d)Ambient air not apparently polluted by corrosive and flflammable gas, vapor etc. 

e)No frequent violent shake

Features and benefifits

•Compact design 

•All steel parts either in stainless steel or hot-dip galvanized

•Solid and stable base frame

•Main contact with icing protection 

•Insulators available in porcelain or alternatively in silicone

•Minimal sag for the line-connection thanks to the two fifixed terminals

•Completely maintenance antirust AL alloy -Arc chamber 

•Switching-off procedure without external arc 

•Short circuit making capacity under specifific conditions possible

•Fixing on the supporting structure either by clamping (free setting) or screwing (holes in the base frame)

•Easy on-site installation and setting

•High reliability: up to 1’000 cycles (depending on the making current) 

•All conducting parts either silver, nickel or tin-plated

•Practically maintenance-free

NoItemUnitDate
1Rated voltageKv122436
2Rated frequencyHz50/60
3Rated currentA200/400/630
4Rated short circuit withstand current

KA

20
5Rated peak withstand currentKA50
6Rated making currentKA31.5-50
7

Rated insulation level(HV)

lighting impulse

KV

75/85125/145170/195
Power frequency withstand4555/7575/100
8

for active circuits

20 breakingsA
630630400
30 breakings400400300
40 breakings300300250
50 breakings250250170
75 breakings170170160
120 breakings110110110
200 breakings656565
280 breakings505050
9For ring circuits breaking capacity630400250
10Rated breaking capacity of transformer505050
11Rated breaking capacity of cable charging111111
12Rated breaking capacity of earthing fault565656


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