XGN2-12kV box type fixed type AC metal closed switch device
- Name：XGN2-12kV box type fixed type AC metal closed switch device
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Summary
Xgn2-12 box-type fixed metal switchgear (switchgear for short) is used for the power receiving and distribution of the three-phase AC 50h Z system with rated voltages of 3.6, 7.2 and 12kV. It is especially suitable for frequent operation occasions, single bus system, and Can derive a single bus with bypass and dual bus structure).
The switchgear meets the requirements of the national GB3906-2006 "3.6~40.5 kV AC metal enclosed switchgear and control equipment" standard lEC298, and has two "five-proof" locking functions.
The main switch of the switch cabinet adopts ZN28A-12 series, ZN12-12 series or VS1-12 series vacuum circuit breaker device, equipped with CD17 series electromagnetic operating mechanism or CT17 / CT19 series spring actuator, and the isolation switch adopts GN19-12 type rotary isolation switch , Gn22-12 high current isolation switch series products.
Product model and meanin
Conditions of use
* environment temperature: upper limit -15 C +4 0 C;
* altitude: not more than 1000m (more than 1000m with our technical department consultation production);
* relative humidity: daily average value is less than 95%, on average less than 90%;
The earthquake intensity does not exceed 8 degrees;
* no fire and explosion danger, serious pollution, chemical corrosion and severe vibration place.
Product features
Xgn2-12 box type fixed metal closed switch equipment, the cabinet body frame is composed of angle steel welded together, in the cabinet for the circuit breaker room, bus room, room, cable, relay room. Between the rooms and rooms with separate iron.
The circuit breaker chamber in the lower part of the front cabinet, circuit breaker rotating by the pull rod and the actuating mechanism is connected, circuit breaker wiring terminal and the isolation switch is connected, circuit breaker terminals with a current transformer
The circuit breaker chamber is also provided with a pressure release channel. If the internal arc occurs, the gas can be released through the exhaust passage.
9:28 busbar compartment the upper part of the cabinet after, in order to reduce the height of the cabinet body bus has shaped arrangement, support insulator of the flexural strength to 7350N, bus and the isolating switch wiring terminal even
Can be isolated from two adjacent cabinet bus rooms.
9:28 cable compartment in the rear of the lower part of the cabinet body, indoor cable support insulators can be used with an electric display device,
cable fixed on the bracket, for main wiring for communication program, this room is linked to
Network cable room. Relay room in the front of the upper part of the cabinet body, indoor installation relays etc., indoor terminal row of the brackets, door can installation instructions instrument, the signal elements of secondary element, following the
Electrical room at the top can also be arranged two small bus.
Operating mechanism of circuit breaker. Installed in the front left position, the above operation isolation switch and interlocking machine. Switch cabinet for double-sided maintenance, maintenance of the two components in the front of the relay
Protecting operating mechanism, mechanical interlocking and transmission part, repairing circuit breaker. Behind the bus and maintenance of cable terminal on the circuit breaker chamber and a cable chamber are equipped with lights. Under the front door
Ground bus with equal width direction.
This switchgear using the corresponding mechanical locking device, the lock has the advantages of simple structure, convenient operation, reliable anti five.
A. the atresia only on the circuit breaker does bring up the rear to handle from the "work" position out of dextral to "breaking" the locked position, isolating switch, prevent the belt load isolation
Leave off.
B. when circuit breaker and isolation in a closing state, the handle is in the working position, the front door cannot be opened, to prevent mistakenly charged interval;
C. when the circuit breaker and isolating switch is in a closing state, the handle can not be transferred to the "maintenance" or "breaking closed" position, to avoid misclassification of circuit breaker, when the handle is in the "breaking and closing
"Lock" position, can only be separated up and down, can not be closed circuit breaker, to avoid the error circuit breaker.
D. when the upper and lower isolation, grounding switch can not be closed, the handle can not be turned from the "broken down" position to "overhaul" position, can prevent live wire hanging wire.
Note: according to the switch equipment is different. Some programs not taken in isolation, or will use isolation grounding switch, the lock and five anti can meet the requirement.
