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vsce(i) vacuum circuit breakers

1. product introduction
vsce (i) series indoor high voltage ac vacuum circuit breaker is an indoor device with three-phase ac 50hz and rated voltage of 12kv. it can be used for the control and protection of electrical facilities in industry, mine, enterprise, power plant and substation. the product conforms to the national standard gb1984 "ac high voltage circuit breaker" and the international electrotechnical commission iec60056 "high voltage ac circuit breaker" and other standards.
the installation form of the circuit breaker in the cabinet is withdrawable handcart type. there are also fixed circuit breakers arranged on the side of the mechanism.

2. product features
◆ totally enclosed pole has excellent electrical performance
◆ the circuit breaker mechanism has excellent anti-corrosion performance and advanced design
◆ the circuit breaker is c2 level
in the process of capacitive current breaking, the circuit breaker has a very low probability of re striking, which meets the requirements of class c2 circuit breaker
◆ adopt buffer with excellent buffer performance
the specially designed buffer reduces the overshoot and rebound of opening, and improves the mechanical life of the circuit breaker
◆ nylon insulated pull rod
the insulated pull rod is made of imported nylon 66 and glass fiber material, which not only ensures the strength and toughness, but also ensures the electrical performance

3. main technical parameters


no.

item

unit

data

1

rated voltage

kv

12

2

rated insulation level

rated power frequency withstand voltage(kv 1min)

phase to ground and phase to phase

42

isolating distance

48

rated lightning shock resistance

phase to ground and phase to phase

75

isolating distance

85

3

rated frequency

hz

50

4

rated current

a

630 and 1250

5

rated short-term withstand current

ka

20, 25 and 31.5

6

rated peak withstand current

50

63

80

7

rated short circuit withstand current

20

25

31.5

8

duration of rated short circuit

s

4

9

rated short circuit closing current

ka

50

63

80

10

rated operation sequence

s

o-0.3s-co-180s-co

11

breaking time

ms

<80

13

times of breaking for rated short circuit breaking current

times

30

14

mechanical life 

30000


4. overall dimensions

 



width of cabinet

data

(12kv)

p

a

b

c

d

600

630a  …31.5ka

150

502

502

498

42.5

1250a  …31.5ka

502

502

498

42.5

800

630a  …31.5ka

210

650

652

648

42.5

1250a  …31.5ka

650

652

648

42.5

1000

630a  …31.5ka

275

850

852

844

48.5

1250a  …31.5ka

850

852

844

48.5



drawing 4: overall dimension of handcart type breaker  

  

       



data(12kv)

p

a

b

h1

h2

h

630、1250a …31.5ka

150

450

400

236

275

552

 

210

588

550

236

275

552



drawing 5: overall dimension of fixed type breaker 



 


width of cabinet

distance

a

b

c

d

e

1000

275

850

800

700

852

880

800

210

650

600

550

652

680

650

150

500

450

400

502

530

550

150

400

350

300

402

430

 


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