serial number

parameter name

unit

numerical value

one

rated voltage

KV

twelve

two

rated current

A

4000 

three

rated frequency

HZ

fifty

four

Short term (1-minute) power frequency withstand voltage

KV

forty-eight

five

Lightning impulse withstand voltage

KV

eighty-five

six

Rated short-circuit breaking current

KA

forty

seven

Rated peak withstand current

KA

one hundred

eight

Rated short-circuit closing current

KA

one hundred

nine

Rated short-time withstand current

KA

forty

ten

Rated short-circuit duration

S

four

eleven

Rated breaking current of a single capacitor bank

A

six hundred and thirty

twelve

Rated back-to-back capacitor bank breaking current

A

four hundred

thirteen

Rated short-circuit breaking current breaking times

time

thirty

fourteen

mechanical life

time

ten thousand

fifteen

Contact self closing force

N

200±60

sixteen

Contact reaction force at rated opening distance

N

300±60

seventeen

Circuit resistance at lower limit of rated contact pressure

μ Ω

≤15

eighteen

Allowable wear thickness of contacts

mm

three

nineteen

Gas pressure inside the vacuum arc extinguishing chamber

Pa

≤1.33×10-3

twenty

Quality of the sports section

Kg

one point two

one

contact gap

mm

10±1.0

two

Average opening speed

m/s

1.2±0.2

three

Average closing speed

m/s

0.7±0.2

four

Rated contact pressure

N

4200±200

five

Contact closing bounce time

ms

≤2

six

Non synchronous closing and opening of contacts

ms

≤1

seven

Rebound amplitude of the opening contact

mm

≤1.5

eight

Contact stroke of contacts

mm

3+1 0