Summary

 

    XGN66-12 type box type fixed type AC metal closed switch equipment (hereinafter referred to as switchgear) applicable to 3.6~12k V phase AC 50Hz system as acceptance and distribution of electric energy device, suitable for frequent operation places and equipped with oil switch switch cabinet reconstruction. The bus system is a single bus system and a single bus system.

 

    Switch cabinet with GB3906 the 3.6 ~ 40.5 kV AC metal closed Kaitian equipment and control equipment, and dl404, the indoor AC high voltage switch cabinet order technical conditions "requirement, the switch cabinet has the advantages of beautiful appearance, small volume, complete and reliable anti misoperation function. Switch cabinet is equipped with the main switch VS1-12 type or ZN28-12 type vacuum circuit breaker and isolation fired by gn19-12 GN19-10 isolation switch and ground switch adopts jn15-12 type grounding switch.

 

Type and meaning

The conditions of use

product mix

    Schematic diagram of switch cabinet (Figure 1).

    This is a box type switchgear cabinet is welded by the fixed structure, and a steel sheet. Switch cabinet after the upper part of the main bus room, room is arranged on the top of the pressure relief device: before the upper part of the relay room, the small bus can be from the bottom of the chamber are connected by cables, switch cabinet in the lower part is communicated, busbar compartment through GN30 type rotary isolating switch and the lower part is in electrical connection; installed in the middle of the vacuum circuit breaker, lower installation of grounding switch or outlet side of the isolating switch; arranged at the rear part of the current transformer, voltage transformer, lightning arrester, a cable from the cabinet after the lower wire; at the bottom of the tank arrangement grounding bus. Throughout the whole row of switch cabinet; disconnector and earthing switch operation the left-hand side in front of the cabinet.

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 the circuit breakers and isolated in a closing state, the handle is in the working position, before the door can not open 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 different scheme of switch equipment, some programs not morbid isolation, or will lower isolating switch grounding switch and the locking and five plates can meet the requirements.

 

Ordering information

 

    The following technical information should be provided in order:

    9:28 main wiring plan number, use and system single line figure, rated voltage, rated current, rated short circuit open fault current, power distribution room layout diagram and switch cabinet are arranged in the diagram:

    * switch cabinet control, measurement and protection function requirements and other locking and automatic device requirements and principle diagram;

    The main electrical components. The switch cabinet type, specification and quantity;

(such as switch cabinet or the line incoming cabinet need bus bar bridge connection, should provide bus bar bridge rated current carrying             capacity, bus bar bridge span, height from the ground concrete requirement data;

    This switchgear used in special environmental conditions, should be detailed in order;

    Or other special requirements, in order before detailed written instructions and consultation. If the order contract has been used in the cabinet, the foundation of the construction of the foundation in accordance with the provision of construction.