serial number

Rated parameters

Parameter values

one

Rated voltage kV

twelve

two

Rated insulation level (phase to phase, ground to ground, fracture)

1-minute power frequency withstand voltage

(Effective value) kV

Alternating and facing the ground

forty-two

fracture

fifty

Lightning impulse withstand voltage

(Peak) kV

Alternating and facing the ground

seventy-five

fracture

eighty-five

three

Auxiliary circuit 1-minute power frequency withstand voltage kV

two thousand

four

Rated frequency Hz

fifty

five

Rated current A

four thousand

six

Rated short-time withstand current kA

sixty-three

seven

Rated peak withstand current kA

one hundred and seventy-six

eight

Rated short-circuit duration s

four

nine

Rated short-circuit breaking current kA

sixty-three

ten

DC component of rated short-circuit breaking current

≥75%

eleven

Rated short-circuit closing current (peak) kA

one hundred and seventy-six

twelve

Rated operating sequence

Split -15 minutes - Split

thirteen

Rated out of step breaking current kA

thirty-one point five

fourteen

Rated load opening and closing times several times

one hundred

fifteen

Expected transient recovery voltage specified value for system source

Peak voltage kV

twenty-two

Reference time μ s

four point nine

Rising rate kV/μ s

four point five

seventeen

Closing time in milliseconds

55±10

eighteen

Opening time ms

45±10

nineteen

Closing bounce time ms

≤2

twenty

Three phase closing and opening asynchronous ms

≤2

twenty-two

Split time ms

one hundred

twenty-three

Rated breaking time in milliseconds

≤70

twenty-four

Mechanical lifespan times

ten thousand

twenty-five

Allowable cumulative thickness of wear for dynamic and static contacts mm

three