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

Embedded Poles

Model:EEP-12/4000-50

Category:Embedded poles


Product details

HEP-12 3150-40A-1.jpg         HEP-12 3150-40A-2.jpg


HEP-12 3150-40A-4.jpg

Specifications of Embedded Pole

Main Technical SpecificationUnitSpecification
40003150
Rated voltagekV12
Rated currentA40003150
Rated frequencyHZ50/60
Short time power frequency withstand voltage(1min)kV48
Lightning impulse withstand voltagekV95
Rated short circuit breaking currentkA50404031.5
Rated peak withstand currentkA12510010080
Rated short circuit making currentkA12510010080
Rated short time withstand currentkA50404031.5
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 currentTimes30
Rated mechanical enduranceTimes20000
Closing force due to bellow and atmosphereN140±50
Force required to hold contacts open at full strokeN220±50
Circuit resistance at lower limit of rated contact force≤25
Contacts limit erosionmm3
Gas pressure inside vacuum interrupterPa≤1x10?3
Localize dischargePc≤5

Mechanical Data Required for the Matched Vacuum Switchgear

Main Technical SpecificationUnitSpecification
40003150
Clearance between open contactsmm11±1
Average opening speedm/s1.2±0.2
Average closing speedm/s0.6±0.2
Rated of contact forceN6000±5004250±2504250±2503150±200
Contact bouncing duration at closing operationms≤2
Out of simultaneity of contact closing and openingms≤2
Maximum rebound during openingmm≤2

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