• BKZC(R)-12 Medium Voltage Drawout type vacuum contactor 400A 630A
  • BKZC(R)-12 Medium Voltage Drawout type vacuum contactor 400A 630A
  • BKZC(R)-12 Medium Voltage Drawout type vacuum contactor 400A 630A
  • BKZC(R)-12 Medium Voltage Drawout type vacuum contactor 400A 630A
  • BKZC(R)-12 Medium Voltage Drawout type vacuum contactor 400A 630A

BKZC(R)-12 Drawout type vacuum contactor

BKZC(R)-12 Medium Voltage Drawout type vacuum contactor 400A 630A
vacuum AC contactors utilize vacuum bottle encapsulated contacts to suppress the arc. This arc suppression allows the contacts to be much smaller and use less space than air break contacts at higher currents. As the contacts are encapsulated, vacuum contactors are used fairly extensively in dirty applications, such as mining.

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Product Description

BKZC(R)-12 Drawout type vacuum contactorProduct Description

BKZC(R)-12 Medium Voltage Drawout type vacuum contactor 400A 630A

Type: AC contactor

Specifications:

vacuum AC contactors utilize vacuum bottle encapsulated contacts to suppress the arc. This arc suppression allows the contacts to be much smaller and use less space than air break contacts at higher currents. As the contacts are encapsulated, vacuum contactors are used fairly extensively in dirty applications, such as mining.

Vacuum contactors are only applicable for use in AC systems. The AC arc generated upon opening of the contacts will self-extinguish at the zero-crossing of the current waveform, with the vacuum preventing a re-strike of the arc across the open contacts. Vacuum contactors are therefore very efficient at disrupting the energy of an electric arc and are used when relatively fast switching is required, as the maximum break time is determined by the periodicity of the AC waveform.

Can be use in KYN28-12 medium voltage metal clad drawout type switchgear assemblies.

 

Main technical parameters:

NO.

Parameters

Unit

Value

BKZC(R)-12-630/400/250

BKZC(R)-12-630/400/250

1

Rated Voltage

kV

7.2

12

2

Rated Current

A

630

400

250

630

400

250

3

Rated closing current (rms)

A

6300

4000

2500

6300

4000

2500

4

rated breaking current

5040

3200

2500

5040

3200

2500

5

4S thermal current

6300

4000

2500

6300

4000

2500

6

Limit breaking current

6300

4000

2500

6300

4000

2500

7

Power frequency withstand voltage

kV

32

42

8

operating frequency

Times/h

300

9

Electric life time

AC-3

×10Times

25

AC-4

10

10

Mechanical life

30

11

Rated operating voltage

V

AC110/220

12

Closing coil pull current

A

≤ DC6/3

13

Holding coil holding current

D:DC0.32/0.16

14

Shunt trip coil current

J:DC2.5/1.3

 

NO.

Parameters

Unit

Value

BKZC(R)-12-630/400/250

BKZC(R)-12-630/400/250

1

contact distance

mm

4.5+1.0/-0.5

6+1.0-0.5

2

contact overtravel

1.5±0.5

3

Average closing speed

m/s

0.1~0.25

4

Average opening speed

0.3~0.6

5

3 Phase closing - opening period

ms

≤ 2

6

Closing time / opening time

≤ 150/ ≤ 150

7

Each phase conductive loop resistance(20oC)

Ω

≤ 250
  
 

 

 

 

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