OEM 24kv 50Hz Medium Voltage Circuit Breaker For Power System 12kv Substation

Table?1??Circuit?Breaker\'s?Main?Technical?Data

Data

NO

Item

Unit

24kv

1

Rated?voltage

kV

24

2

Rated?frequency

Hz

50

3

Rated?current

A

630/1250

4

Rated?short?circuit?breaking?current

kA

20/25

5

Rated?peak?withstand?current

kA

50/63

6

Rated?short?time?withstand?current/?lasting?time

kA/s

20/4?, 25/4

7

Rated?short?circuit?closing?current(peak)

kA

50/63

8

Rated?operating?sequence

O-0.3s-CO-180s-CO

9

Mechanical?life

time

10000

10

Rated?short?circuit?breaking?current?breaking?times

20

11

1min?power?frequency?withstand?current

(wet)

kV

50/64

(dry)

kV

65/79

12

Lightning?impulse?withstand?voltage(peak)

kV

125/145

13

Secondary?circuit?power?frequency?withstand?voltage?(1min)

V

2000

?Table2?Circuit?Breaker\'s?Main?Mechanical?Data

NO

Item

Unit

Data

24kv

1

Clearance?between?contacts

mm

12±1

2

Contact\'s?overtravel

mm

3.5±1

3

Open?speed

m/s

1.4±0.2

4

Closing?speed

m/s

0.7±0.2

5

Contact?closing?j