vacuum interrupter

Data

Unit

Value

Rated Voltage

kV

12

Lightning Impulse Withstand Voltage (Peak)

kV

75

Short-time (1min) Power-frequency Withstand Voltage

kV

42/48

Rate Frequency

Hz

50

Rated Current

A

630

Rated Short-time Withstand Current

kA

20

Rated Duration of Short-circuit

s

4

Rated Peak Withstand Current

kA

50

Rated Short-circuit Making Current

kA

50

Rated Active Load Breaking Current

A

630

Rated Closed-loop Breaking Current

A

630

Rated Single Capacitor Bank Breaking Current

A

400

Rated Back-to-back Capacitor Bank Breaking Current

A

400

Rated Breaking Current of Cable Charging

A

10

Mechanical Endurance

Operations

10000

Clearance Between Open Contacts

mm

9±1

Contact Closed Force Due to Bellows and Atmosphere

N

70±25

Counterforce of Contact at Full Stroke

N

120±30

Circuit Resistance at Min. Rated Contact Force

μΩ

≤30

Contact Limit Erosion

mm

3

Mass of Moving Parts

kg

0.4

Internal Gas Pressure

Pa

<1.33×10-3

Shelf Life

Year

20

Data

Unit         

Value              

Average Opening Speed

m/s

1.0±0.2

Average Closing Speed

m/s

0.6±0.2

Contact Bounce Duration at Closing Operation

ms

≤2

Out of Simultaneity of Contact Closing and Opening      

ms

≤1

Rated Contact Pressure

N

9001100

Max.rebound of contact at opening Operation

mm

2

Overtravel during opening

mm

≤2