This product complies with: GB3906 "3-35KV AC metal-enclosed switchgear", GB/T11022 "Shared technical requirements for high-voltage switchgear and control equipment standards", IEC60298 "AC metal-enclosed switchgear and control equipment with rated voltage above 1KV and 50KV and below" 》, DL/T404 "Technical Conditions for Ordering Indoor AC High Voltage Switchgear" standard.

Conditions of use

a. Surrounding air temperature: -15°C~+40°C;
b. Altitude: 1000m and below;
c. Humidity conditions: daily average value is not more than 95%, daily average water vapor pressure is not more than 2.2kpa, monthly average The value is not greater than 90%, and the monthly average water vapor pressure is not more than 1.8kpa;
d. Earthquake intensity: not more than 8 degrees;
e. Places without corrosive or flammable gases, or other obvious pollution,
Note: Users can negotiate with our company when the above normal usage conditions are exceeded.

Model and meaning

Structural description
Completely metal armored, modular structure, wide range of combination options.

The cabinet body is made of imported aluminum-zinc coated steel plate and processed by CNC machine tools. It adopts multiple folding processes and is connected with rivet nuts and high-strength bolts. It has high precision, corrosion resistance, light weight, high strength and strong parts versatility.

It can be assembled with ZN63A-12 (VS1), VD4 series, EV12 series, VEP series and other vacuum circuit breakers. It has wide applicability, high reliability, and is maintenance-free all year round. The test position has positioning and display devices at each position, which is safe and reliable. Various types of handcarts change according to modular building blocks, ensuring that cars of the same specifications can be freely interchanged and transported by special carrier vehicles, making operation light and flexible.

The cable room can accommodate up to 9 single-core cables.

The highly reliable interlocking device fully meets the five-proof requirements.

Each high-pressure chamber has a pressure relief channel to ensure personal safety.

The cabinet door is equipped with an observation window to observe the working status of indoor components.

The cabinet body can be made into cabinets of equal or unequal height according to user requirements.

It can be equipped with an optional reliable microcomputer detection, control and protection system.

Technical parameters: Main switch in the switch cabinet (SF6 load switch and combination electrical appliance)

The switchgear consists of cabinet, main switch (SF6 load switch or combination electrical appliance), grounding switch, instrument room, busbar and other electrical components and auxiliary components.
The cabinet body is made of aluminum-zinc coated steel plates and assembled through modular molding. There is a pressure relief channel behind the cabinet to protect the operator in the event of internal failure.
The busbar in the busbar room is insulated and directly connected to the terminal block of the load switch. The three-phase busbars are arranged vertically and horizontally, so that the switchgear can be expanded arbitrarily on the left and right sides, making it easy to change its layout.
The instrument room is located at the upper part of the switchgear. Ammeters, voltmeter indicators, electric operating mechanisms, etc. can be installed in the room.
Interlock
The switchgear has the following interlocks
: a. When the load switch is in the closing position, the grounding switch operation is locked;
b. When the grounding switch is in the closing position, the load switch operation is locked;
c. Only when the grounding switch is closed, the groundingThe front door of the ring main unit is allowed to be opened. In other cases, the front door is locked.
operate
For switchgear equipped with load switches, use a special operating handle to operate on the front of the switchgear. There are two upper and lower operating holes on the front of the operating mechanism, the upper part is the grounding switch operation hole, and the lower part is the load switch operation hole. During operation, the handle rotates clockwise for the switch closing direction and counterclockwise for the switch opening direction. An electric opening and closing device can also be installed for operation. (Note that sometimes the load switch does not have a grounding switch, and the grounding switch operation hole is used to unlock the cabinet door).
For switchgear equipped with combination appliances, the operation sequence is the same as above except that the load switch is divided into manual opening and closing buttons for operation. The lower grounding switch in the combined electrical cabinet is opened and closed together with the upper grounding switch through a connecting rod. When closing, the residual small current on the lower fuse holder is released to improve safety when replacing the fuse.
Technical parameters

Ordering instructions