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Hubei Dayu Hanguang Vacuum Electric Co.,Ltd.
CN EN

Embedded poles

Embedded poles

Model：EEP-40.5/2500-31.5

Category：Embedded poles


Product details

HEP-40.52 500-31.5-1.jpg  HEP-40.52 500-31.5-2.jpg

HEP-40.52 500-31.5-3.jpg

Specifications of Embedded Pole

Main Technical SpecificationUnitSpecification
2500200016001250
Rated voltagekV40.5
Rated currentA2500200016001250
Rated frequencyHZ50/60
Short time power frequency withstand voltage(1min)kV95
Lightning impulse withstand voltagekV185
Rated short circuit breaking currentkA31.5
Rated peak withstand currentkA80
Rated short circuit making currentkA80
Rated short time withstand currentkA31.5
Rated duration of short circuitS4
Rated breaking current of single capacitor bankA400
Rated breaking current of back to back capacitor bankA400
Rated operating sequenceO-0.3s-CO180s-CO
Breaking operations of rated short circuit breaking currentTimes20
Rated mechanical enduranceTimes10000
Closing force due to bellow and atmosphereN120±50
Force required to hold contacts open at full strokeN240±50
Circuit resistance at lower limit of rated contact forcemΩ≤30
Contacts limit erosionmm3
Gas pressure inside vacuum interrupterPa≤1x10?3
Localize dischargePc≤5

Mechanical Data Required for the Matched Vacuum Switchgear

Main Technical SpecificationUnitSpecification
2500200016001250
Clearance between open contactsmm18±1
Average opening speedm/s1.55±0.15
Average closing speedm/s0.7±0.2
Rated of contact forceN3200±200
Contact bouncing duration at closing operationms≤3
Out of simultaneity of contact closing and openingms≤2
Maximum rebound during openingmm≤3

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