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Outdoor intelligent high voltage vacuum circuit breaker FZW28-12
Outdoor intelligent high voltage vacuum circuit breaker FZW28-12

>Outdoor intelligent high voltage vacuum circuit breaker FZW28-12

Categories
High Voltage Vacuum Circuit Breaker
MOQ
5
Brand
Johsun
FOB port
Shanghai,Ningbo
Terms of Payment
Western Union,T/T,Paypal
Deliverytime
15 working days

Description

FZW28-12 series outdoor cut-off vacuum load switches are suitable for outdoor three-phase ac power distribution systems with rated voltage of 12KV and rated frequency of 50Hz, and are used for opening and closing load currents and closing short circuit currents. It is suitable for substation, industrial and mining enterprises, city, agricultural network for protection, automatic distribution network and frequent operation places. The dividing load switch is composed ofFZW28-12 vacuum load switch and controller. It is electrically connected through aviation socket and outdoor sealed control cable. It can reliably judge the milliampere-zero sequence current and the same circuit breaker current inside and outside the detection range, and can be suitable for distribution systems with different neutral grounding modes.

 

Model and meanings

Working conditions

1. Ambient air temperature: cap+ 60 'C, lower limit - 30 'C; 

2. Altitude: 3000m. If elevation is needed, the rated insulation level shall be increased accordingly. 

3. Amplitude: seismic intensity does not exceed 8 degrees; 

4. The daily average of air relative humidity is not more than 95%, and the monthly average is not more than 90%; 

5. No fire, explosion danger, serious pollution, chemical corrosion and violent vibration places . 

 

Main technical parameters

No.

Item

Unit

Data

1

Rated voltage

KV

12

2

Rated insulation level

Power frequency withstand voltage(1min)between phases,to earth(cross isolating break)

KV

dry

42/48

Lightning impulse withstand voltage between phases,to earth(cross isolating break)

wet

34

3

Rated frequency

Hz

50

4

Rated current

A

63

5

Rated delay tolerance current and duration

KA/4s

16

20

6

Rated peak withstand current

KA

40

50

7

Rated short circuit making current

KA

40

50

8

Mechanical life

Times

20000

9

Net weight

kg

198

 

Outline and mounting dimensions

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