1. Altitude: less than 1000m;
2. Ambient temperature: (a) The highest temperature does not exceed +40℃; (b) The lowest temperature is not lower than -25℃; (c) The average temperature within a 24-hour period does not exceed +35℃ ;
3, seismic horizontal acceleration is not greater than 0.4m / s2, the vertical acceleration is not greater than 0.2M / S2;
. 4, no severe vibration and shock and explosion hazard.

The switchgear is designed according to the armored metal-enclosed switchgear in GB3906-91. The whole is composed of a cabinet and a middle-mounted withdrawable part (ie, a handcart). The cabinet is divided into four separate compartments, the enclosure protection level is IP4X, and the protection level of each compartment and circuit breaker room is IP2X when the door is opened. It has overhead incoming and outgoing lines, cable incoming and outgoing lines and other functional schemes, which form a complete set of power distribution system devices after arrangement and combination. The switchgear can be installed, debugged and maintained from the front, so they can be back-to-back, double-arranged and installed against the wall, which improves the safety and flexibility of the switchgear and reduces the floor space.

1. The ambient air temperature is not higher than +40℃ and not lower than -10℃. The average temperature within 24h shall not be higher than +35℃.
2. For indoor installation and use, the altitude of the place of use shall not exceed 2000m.
3. The relative humidity of the surrounding air does not exceed 50% when the highest temperature is +40℃, and a higher relative humidity is allowed at a lower temperature (for example: 90% at +20℃), which should be considered due to temperature changes. There may be occasional effects of condensation.
4. When the equipment is installed, the inclination from the vertical plane should not exceed 5°.

1. The main frame is made of 8MF open section steel, which is cold-formed from 2.5mm cold-rolled plate. There are installation holes with modulus of 20mm and 100mm, 9.2mm on the triangular surface of the section steel. It has high strength and is convenient for modular installation. Features.
2. The drawer type is divided into four size series: 1/2 unit, 1 unit, 2 unit, and 3 unit. The rated current of the loop is 400A and below.
3. Flexible assembly, compact structure, strong versatility, good safety performance, compressed space, and convenient assembly.
4. Increase the heat capacity of the adapter, and greatly reduce the additional temperature rise caused by the temperature rise of the adapter to the plug-in, cable head, and spacer plate.
5. The functional units and compartments are clear and reliable. The failure of one unit does not affect the work of other units, and the failure is limited to the minimum range.

This product has high breaking capacity. Good dynamic stability, advanced and reasonable structure, practical electrical scheme, strong series and versatility, any combination of various scheme units, a cabinet contains more circuits, saving floor space, beautiful appearance, and high protection level , Safe and reliable, convenient maintenance and other advantages.
This product complies with: National Standard GB/T7251.12-2013.

1. Rated voltage: 400V+20%;
2. Rated current: 25, 40, 63, 125, 160 , 200, 250, 325, 400A;
3. Rated frequency: 50Hz;
4. Insulation resistance: ≥4M?;
5 , Dielectric strength: main circuit 2.5kV, 1min;
6. Auxiliary circuit: 2.0kV, 1min.