serial number

parameter name

unit

numerical value

one

rated voltage

KV

seven point two

two

rated current

A

four hundred

three

rated frequency

HZ

fifty

four

Short term (1-minute) power frequency withstand voltage

KV

thirty-two

five

Lightning impulse withstand voltage (peak value)

KV

sixty

six

Rated short-circuit breaking current

KA

ten

seven

Rated short-time withstand current

KA

ten

eight

Rated short-circuit duration

S

four

nine

Rated peak withstand current

KA

twenty-five

ten

Rated short-circuit closing current

KA

twenty-five

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

85±20

sixteen

Contact reaction force

N

100±40

seventeen

Circuit resistance at lower limit of rated contact pressure

μ Ω

≤30

eighteen

Allowable wear thickness of contacts

mm

three

nineteen

Internal gas pressure

Pa

≤1.33×10^-3

twenty

Quality of moving parts

kg

zero point six

one

contact gap

mm

8±1.0

two

Average opening speed

m/s

1.0±0.2

three

Average closing speed

m/s

0.8±0.2

four

Rated contact pressure

N

650±50

five

Contact closing bounce time

ms

≤2

six

Rebound amplitude of the opening contact

ms

≤1.5

seven

Contact stroke of contacts

mm

two^+0.5₀