serial number

parameter name

unit

numerical value

one

rated voltage

KV

twelve

two

rated current

A

six hundred and thirty

three

rated frequency

HZ

fifty

four

Short term (1-minute) power frequency withstand voltage

KV

forty-two

five

Lightning impulse withstand voltage

KV

seventy-five

six

Rated short-time withstand current

KA

twenty

seven

Rated short-circuit duration

S

four

eight

Rated peak withstand current

KA

fifty

nine

Rated short-circuit closing current

KA

fifty

ten

Rated Active load breaking current

A

six hundred and thirty

eleven

Transfer current (AC current)

KA

three point one five

twelve

Rated closed-loop breaking current

A

six hundred and thirty

thirteen

Rated cable charging breaking current

A

ten

fourteen

Rated no-load transformer breaking current

A

one hundred

fifteen

Rated breaking current of a single capacitor bank

A

five hundred

sixteen

Rated back-to-back capacitor bank breaking current

A

four hundred

seventeen

mechanical life

time

ten thousand

eighteen

Contact self closing force

N

80±30

nineteen

Contact reaction force at rated opening distance

N

140±40

twenty

Circuit resistance at lower limit of rated contact pressure

μ Ω

≤35

twenty-one

Allowable wear thickness of contacts

mm

three

twenty-two

Gas pressure inside the vacuum arc extinguishing chamber

Pa

≤1.33×10^-3

twenty-three

Quality of the sports section

Kg

zero point six

twenty-four

Quality of vacuum arc extinguishing chamber

Kg

two point one

one

contact gap

mm

10±1

two

Average opening speed

m/s

1.0±0.2

three

Average closing speed

m/s

0.6±0.2

four

Rated contact pressure

N

1000±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

three⁺¹₀