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1 Introduction
HXGN17-12 series box-type fixed AC metal-enclosed ring network switchgear (referred to as ring network cabinet) is a complete set of switches in ring network power supply and distribution systems and radial power supply and distribution systems with a three-phase AC rated voltage of 12kV and a rated frequency of 50Hz. Equipment, used for the protection and control of transformers, cables, overhead lines and other power equipment.
Its main switching components adopt the FN12-12 series compressed air load switch and its combined electrical appliances, the FZN25-12 series vacuum load switch and its combined electrical appliances and the YD4 series vacuum circuit breaker produced by Fujian Dongfang Electric Co., Ltd.
These products have been selected into the "Recommended Catalog of Main Equipment Products and Manufacturers Necessary for National Urban and Rural Power Grid Construction and Transformation" issued by the State Economic and Trade Commission.
2. Meet the standards
GB11022 《General Technical Conditions for High Voltage Switchgear》
GB 3906 3.6-40.5 《AC metal-enclosed switchgear》
IEC694 (1996) 《Common Clauses for High Voltage Switches and Control Equipment》
IEC298 (1990) 《AC metal-enclosed switchgear and control equipment with rated voltages above 1kV and 52kV and below》
3.Electrical characteristics
Item | Load switch cabinet | Load switch-fuse combination electrical 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 closing 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(expect) | 25 | |||||
1min Power frequency withstand voltage kV | relatively, | 42 | |||||
Isolate fracture | 48 | ||||||
Lightning impulse withstand voltage kV | relatively, relative to the ground | 75 | |||||
Isolate fracture | 85 | ||||||
Switchgear components | FN12-12（D）/630 | FZN25-12（D）/630 | FN12-12（DR）/125 | FZN25-12（D）/200 | YD4-12/630-25 | ||
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