Outdoor High-Voltage Integrated Primary and Secondary Circuit Breaker LW3-12
Negotiable
China
No. 439, Yizhi Road, Zone A, Xiaolan Economic and Technological Development Zone, Nanchang County, Nanchang City, Jiangxi Province
0791-88556630
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Product Introduction

Overview:

The GWX□-12 outdoor AC high-voltage SF6-integrated circuit breaker produced by Jiangxi Kerui Electric Co., Ltd. is primarily used in three-phase 12KV power systems with AC 50Hz. It serves as a sectionalizing and tie switch for 12KV lines in urban and rural networks, and as an outgoing line switch on the 12KV side of medium and small 35KV substations. When equipped with FTU and other microcomputer control devices, it becomes an intelligent “automatic switch” integrated with primary and secondary functions, making it an ideal switchgear for achieving distribution network automation. It is capable of breaking and closing load current, overload current, and short-circuit current.

Technical Specifications:

 

No. Name Unit Data
1 Rated Voltage kV 12
2 Rated Insulation Level (with SF6 gas at 0.25MPa, 20°C)    
  Lightning Impulse Withstand Voltage (full wave) kV 75
  1-minute Power Frequency Withstand Voltage kV 42
  Rain Withstand Voltage Test kV 34
  Reverse Impulse Withstand Voltage kV 85
3 Insulation Level at Zero Gauge Pressure    
  1-minute Power Frequency Withstand Voltage kV 30
  1-minute Reverse Withstand Voltage kV 30
  Maximum Phase Voltage for Five Minutes kV 9
4 Rated Current A 630
5 Rated Short-Circuit Breaking Current (at 0.25MPa, 20°C) kA 13 / 20
6 Rated Short-Circuit Breaking Current Breaking Times Times ≥20
7 Asynchronous Grounding Reclosing Breaking Current kA 14 / 17.4
8 Breaking Current at Zero Gauge Pressure A 630
9 Rated Operation Sequence   Open - 0.3s - Close Open - 180s - Close Open
10 Rated Short-Circuit Closing Current (Peak) kA 40 / 50