12kV 310mm High Voltage Embedded Pole for Vacuum Circuit Breaker EP12/25-40

Compatible specifications:

EP12/31.5-31.5 EP12/31.5-50

Main Technical Data

Parameter unit Numeric
Rated Voltage kV 12
Rated Current A 3150
Rated Frequency Hz 50
Rated Short- circuit Breaking Current kA 31.5 40 50
Operations Of Short-drcuit Breaking Current Interruption Second-rate 30
Rated Short- circuit Making Current kA 80 100 125
Rated Peak Withstand Current kA 31.5 40 50
Rated Short- time Withstand Current(4s) kA 80 100 125
Rated Single Capacitor Bank Breaking Current A 400/630
Rated Back-to-back Capacitor Breaking Current A 400
Short-time(1 min)power-frequency Withstand Voltage kV 42/48
Lighting Impulse Withstand Vbltage(peal^ kV 75
Circuit Resistance At Rated Contact Force μΩ (Rvi+4)
Mechanical Life Second-rate 10000
Contact Closing Force Due Ib Bellows And Atmosphere N See vacuum tube
Counterforce At Rated Contact Stroke N 420±60
Contact Limit Erosion mm 3
Shelf Life Year 20
Partial Discharge pc ≤2
Rated Operating Sequence   0-0.3s-CO-180s-CO

Mechanical Data Of Circuit Equipped With Interrupters

Parameter    
Rated Contact Stroke mm 9±1
Contact Connection Stroke mm 4±1
Average Opening Speed m/s 1.1±0.2
Average Closing Speed m/s 0.7±0.2
Rated Operation Pressure Of Contact N 3100±200 4250±200 6700±300
Bounce Duration Of Contact Closing ms ≤2
Out Of Simultaneity Of Contact Closing And Opening ms ≤1
Max.overtravel mm ≤2

12kV 310mm High Voltage Embedded Pole for Vacuum Circuit Breaker EP12/25-40

12kV 310mm High Voltage Embedded Pole for Vacuum Circuit Breaker EP12/25-40

12kV 310mm High Voltage Embedded Pole for Vacuum Circuit Breaker EP12/25-40

Aodley Electrical Insulation

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