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ZHN3A-72.5 Green GIS for Wind & Solar Energy
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Huade Electric has researched and developed ZHN3A-72.5 Green GIS specially used for new energy. This new fluorine-free environment-friendly 72.5kV gas-insulated metal-enclosed switch adopts the world's leading new science and technology and production process.
It has high reliability and maintenance-free high-tech fluorine-free environment-friendly switch equipment with high technical parameters (rated current is 1250A, up to 2500A); rated short-circuit breaking current 31.5kA, up to 40kA) and small floor area (length of 2500mm, width of 980mm).
Product Details:
ZHN3A-72.5 green GIS is composed of several standard functional modules, such as circuit breaker (VCB), Earthing Disconnecting switch (EDS) and cable terminal etc. These modules have the same interface form and size, and various modules can be combined arbitrarily to meet the design and layout requirements of various substations. Each module is assembled in a manner that facilitates future reconstruction and expansion, and gas-isolating insulators minimize the interaction between adjacent modules.
Flexible modular design enables the optimization of the design and layout of wind turbine or package-type substation equipment, and various conditions and factors, such as main wiring, incoming line and cable direction, trafficability, fast troubleshooting, etc., can be fully considered.
Technical ParametersS/N Item Unit Parameters 1 Rated voltage kV 72.5 2 Rated frequency Hz 50/60 3 Rated continuous current A 1250 4 Rated short-circuit breaking current kA 31.5 5 Rated short circuit making current kA 80/86 6 Full breaking time ms ≤ 60 7 Circuit breaker closing time ms ≤100 8 Circuit breaker opening time ms ≤40 9 Asynchronous circuit breaker Opening ms ≤2 Closing ms ≤2 10 Rated short-time withstand current (effective value) kA 31.5 11 Rated short-circuit duration s 3 12 Rated peak withstand current (effective value) kA 80/86 13 Rated short-time powerfrequencywithstand voltage
(1min)Phase to earth,
Phase to PhasekV 160 Across the
isolating
distancekV 160+42 14 Rated lighting impulse withstand voltage
(Peak value)Phase to earth,
Phase to PhasekV 380 Across the
isolating
distancekV 380+60 15 Clean air
Gas pressure (20℃, gauge pressure)Rated pressure Mpa 0.6 Alarm pressure Mpa 0.57 16 Minimum functional pressure Mpa 0.56 17 Circuit breaker electrical life E2 level 18 Rated operating sequence O-0.3s-CO-180s-CO 19 Partial discharge
(Under 1.2 times rated voltage)Integral compartment pC 5 Insulating part pC 3 20 Compartment weight T 1-2 21 Annual leakage rate ≤0.1%
ZHN3A-72.5 Green GIS for Wind & Solar Energy
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