Vacuum Circuit Breaker 12kV (ZW32G)

Model NO.

ZW32-12(G)

Poles Number

3

Type

Circuit Breaker

Function

Conventional Circuit Breaker

Certification

ISO9001-2000, CE, CCC

Rated Short Circuit Duration

4s

Mechanical Life

10,000 times

Clearance Between Open Contacts

8-10mm

Contact Over Travel

1.5-2.5mm

Weight

85, 125 (with G)

Trademark

VACEM

Origin

Wenzhou, China

Item

Unit

ZW32-12(G)/400-12.5

ZW32-12(G)/630-16

ZW32-12(G)/630-20

Rated voltage

kV

12

Rated current

A

400

630

630

Rated short circuit breaking current

kA

12.5

16

20

Rated short circuit making current (peak)

kA

31.5

40

50

Rated peak withstand current

kA

31.5

40

50

Rated short time withstand current

kA

12.5

16

20

Rated short circuit duration

S

4

Rated insulation level 1min power frequency withstand voltage

kV

Phase to phase, to ground 42; fracture 48

Rated insulation level lightning impulse withstand voltage (peak)

kV

Phase to phase, to ground 75;fracture 85

Rated sequence of operations

O-0.3s-CO-180s-CO

Rated short circuit current breaking time

time

30

Mechanical life

time

10000

Rated operation voltage (opening, closing coil)

V

DC220,110; AC220

Allowable attrition thickness of moving and fixed contact

mm

3

Over-current release rated current

A

5

Current transformer ratio

200/5  400/5  600/5

Clearance between open contacts

mm

9±1

Contact over travel

mm

2±0.5

Average opening speed

m/s

1.2±0.3

Average closing speed

m/s

0.6±0.2

Opening time

ms

30~60

Closing time

ms

20~40

Closing bounce time

ms

≤2

Tri-phase opening and closing synchronous

ms

≤2

Each phase loop DC resistance

μΩ

≤80

Stored energy motor rated voltage

V

-220

Stored energy motor rated power

W

200

Stored energy motor stored energy time

S

≤8

Weight

Kg

85, 125 (with G)