Primary Power Distribution

Huatech Primary Power Distribution Full Series

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No. Parameter Unit VEP Indoor Solid-Encapsulated Vacuum Circuit Breaker VEP-M Indoor Solid-Encapsulated Vacuum Circuit Breaker FEP Indoor SF₆ Circuit Breaker VFS Indoor Generator Circuit Breaker VEC Vacuum Contactor-Fuse Combination Unit
1 Rated Voltage kV 12 / 17.5 / 24 / 40.5 12 12 / 40.5 12 7.2 / 12
2 Rated Frequency Hz 50 (17.5kV: 50/60) 50 50 50 50
3 Power Frequency Withstand Voltage (Auxiliary Circuit) kV 2 2 2 - -
4 1min Power Frequency Withstand Voltage
 
(Phase-to-Earth & Phase-to-Phase)		 kV 12kV:42
 
17.5kV:42
 
24kV:50/65**
 
40.5kV:95		 42 12kV:42
 
40.5kV:95		 42 7.2kV:32
 
12kV:42
5 1min Power Frequency Withstand Voltage
 
(Across Breaker Pole)		 kV - - 12kV:48
 
40.5kV:118		 50 -
6 Lightning Impulse Withstand Voltage (Peak)
 
(Phase-to-Earth & Phase-to-Phase)		 kV 12kV:75
 
17.5kV:95
 
24kV:125
 
40.5kV:185		 75 12kV:75
 
40.5kV:185		 75 7.2kV:60
 
12kV:75
7 Lightning Impulse Withstand Voltage (Peak)
 
(Across Breaker Pole)		 kV - - 12kV:85
 
40.5kV:215		 85 -
8 Partial Discharge pC - - ≤5 - -
9 Rated Normal Current A 630~5000* 630~4000* 1250~3150* 1250~5000* Contactor: 400
 
Combination: 7.2kV/315; 12kV/160
10 Rated Short-Circuit Breaking Current kA 20 / 25 / 31.5 / 40 / 50 20 / 25 / 31.5 / 40 12kV:31.5
 
40.5kV:31.5/40		 40 / 50 Contactor: 4
11 Rated Short-Time Withstand Current kA 20 / 25 / 31.5 / 40 / 50 20 / 25 / 31.5 / 40 12kV:31.5
 
40.5kV:31.5/40		 40 / 50 4 (4s)
12 Rated Short-Circuit Making Current (Peak) kA 50 / 63 / 80 / 100(125) / 125(150) 50 / 63 / 80 / 100 12kV:31.5
 
40.5kV:80/100		 115 / 140 Contactor: 4
 
Combination: 130 (Peak)
13 Rated Peak Withstand Current kA 50 / 63 / 80 / 100(125) / 125(150) 50 / 63 / 80 / 100 12kV:80
 
40.5kV:80/100		 - -
14 Rated Out-of-Phase Breaking Current kA - - 12kV:7.9
 
40.5kV:7.9/10		 - -
15 Rated Earth Fault Breaking Current kA - - 12kV:27.4
 
40.5kV:27.4/34.4		 - -
16 Rated Back-to-Back Capacitor Bank Breaking Current A - - 1250 - -
17 Rated Cable Charging Breaking Current A - - 12kV:25
 
40.5kV:50		 - -
18 Rated Short-Circuit Duration s 12/17.5/40.5kV:4
 
24kV:3/4**		 4 4 4 -
19 DC Component of Rated Short-Circuit Breaking Current % - - - ≥80 -
20 Operation Times (Short-Circuit Breaking) Times - - - 10 -
21 Operation Times (Load Current Breaking) Times - - - 50 -
22 Max. Short-Circuit Breaking Current (Combination Unit) kA - - - - 50
23 Operating Frequency Times - - - - Mechanical Latch: 300,000
 
Electrical Latch: 1,000,000
24 Operating Voltage V - - - - DC110, DC220, AC110, AC220

 

      

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