ZHW-40.5

ZHW-40.5 is a 40.5kV composite combination of appliances. This product is suitable for AC 50Hz, 40.5kV power system in a variety of power plants and substations. ZHW -40.5 composite combination of electrical appliances is a circuit breaker, disconnecting switch and earthing switch, etc. installed in metal-enclosed gas-insulated housing in three-phase split structure, with a compact design, beautiful appearance, small size, light weight, performance Excellent, high reliability. Suitable for substation expansion project and industrial and mining enterprises.

Features

The use of isolation / grounding switch three-station design, sharing a single operating mechanism operation; compact design, small footprint; aluminum alloy shell, corrosion resistance, light weight; isolation, grounding three station combination switch is closed in hexafluoride Sulfur gas in the aluminum alloy shell, greatly reducing the isolation switch failure; the first and second equipment in the factory assembly, after the test is completed and then transported to the scene, only a simple cable connection in the field can be run; the use of sets Tubular current transformer for easy installation. Into the line can be installed current transformer. ZHW-40.5 part of the entire substation from engineering design to equipment delivery are completed to meet the requirements of international standards.

ZHW-40.5 is a new combination of appliances, from sulfur hexafluoride circuit breakers, three-position isolation switch - earthing, current transformers and counters and other components. Circuit breaker interrupters horizontal layout, the product of the three-position isolation, grounding switches and circuit breakers together enclosed in sulfur hexafluoride gas aluminum alloy casing, greatly reducing the isolation switch failure, with high reliability, covers an area Less, less maintenance and many other advantages. Wiring with unipolar bushings is connected to the open air insulated busbar of the substation while the open air-insulated arrangements are kept open. Wiring and layout is convenient and flexible. Breaker for the split-phase tank structure, three-phase shared a spring operating mechanism, mechanical linkage. The circuit breaker arc extinguishing chamber is horizontally arranged and installed in a gas-tight housing which is arranged on the supporting insulator and respectively fixed on both sides of the housing. The arc-extinguishing chamber is a single-pressure gas-pressure structure. The extinguished arc does not depend on the magnitude of the arc energy, so it has excellent breaking capability for large and small current. The arc time can be reliably extinguished within 6 to 18 ms. Is a short arc arrester. Sulfur hexafluoride gas through the nozzle blowing a strong arc forced the arc in the current zero crossing extinguished, once the break is completed, the pressure quickly disappear, the pressure inside and outside the cylinder pressure to restore balance, due to moving the seat with a check valve, closing When the pressure difference is very small. Isolation - grounding switch is through the rack and pinion gear moving contact opening and closing operation. Isolation - grounding switch with a three-position mechanism, the main shaft and the body of the switch body is connected through a gear transmission. Three-position agencies by the motor, gear, cam plate, micro-switches, auxiliary switches and other components. It is driven by the motor gear group, and then drive the cam plate rotation, and then drive the output shaft so that the isolation switch and the work of grounding switch to achieve sub-closing operation. The cam plate has a lock position function.

Ordering Instructions

Product type, name, quantity; rated voltage, rated current; a main wiring diagram Operating mechanism motor voltage, control voltage, auxiliary switch contacts; current transformer parameters; spare parts list, name and quantity.