HXGN17-10 Box type Fixed Ring Network Switchgear
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- Product Overview
- The HXGN17-12 series box-type fixed AC metal-enclosed ring main unit (hereinafter referred to as the RMU) is a complete switchgear set designed for 12kV rated voltage and 50Hz rated frequency three-phase AC systems. It is widely used in ring network power supply and distribution systems as well as radial power supply and distribution systems, serving to protect and control power equipment such as transformers, cables, and overhead lines. Its main switching components include the FN12-12 series pneumatic load switches and their combined electrical devices, the FZN25-12 series vacuum load switches and their combined electrical devices, and the YD4 series vacuum circuit breakers—all manufactured by Fujian Dongfang Electric Co., Ltd. These products have been included in the "Recommended Catalog of Key Equipment Products and Manufacturers for National Urban and Rural Power Grid Construction and Renovation" issued by the former State Economic and Trade Commission (SETC).
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Compliant Standards
GB 11022 - General Technical Conditions for High-Voltage Switchgear and Controlgear
GB 3906 - 3.6kV～40.5kV AC Metal-Enclosed Switchgear
IEC 694 (1996) - Common Clauses for High-Voltage Switchgear and Controlgear
IEC 298 (1990) - AC Metal-Enclosed Switchgear and Controlgear for Rated Voltages Above 1kV Up to and Including 52kV
Meaning of Model Designation
Electrical CharacteristicsItems Load Switch Cabinet Load Switch-Fuse Combined Cabinet Vacuum Circuit Breaker Cabinet HXGN17-12(F)/630 HXGN17-12(FZ)/630 HXGN17-12(FR)/125 HXGN17-12(FZR)/200 HXGN17-12(Z)/630 Rated Voltage (kV) 12 Rated Frequency (Hz) 50 Rated Current (A) 630 125 200 630 Rated Short-Time Withstand Current (kA) 20
25 Rated Short-Circuit Duration (s) 4
4 Rated Peak Withstand Current (kA) 50
63 Rated Short-Circuit Making Current (kA) 50
63 Rated Active Load Breaking Current (A) 630 Rated Closed-Loop Breaking Current (A) 630 Rated Transfer Current (A)
1750 3150 Rated Short-Circuit Breaking Current (kA)
31.5(Expected) 25 1-Minute Power Frequency Withstand Voltage (kV) Between Poles 、Pole-to-Ground 42 Isolating Break 48 Lightning Impulse Withstand Voltage (kV) Between Poles、Pole-to-Ground 75 Isolating Break 85 Switchgear Components FN12-12（D）/630 FZN25-12（D）/630 FN12-12（DR）/125 FZN25-12（D）/200 YD4-12/630-25 Similar Products
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