1、Ambient air temperature: -15℃ to +40℃, with the daily average temperature not exceeding +35℃. If exceeded, derating operation shall be performed according to actual conditions.
2、Altitude: not exceeding 2500 m.
3、Relative humidity: not more than 50% at the maximum temperature of +40℃. Higher relative humidity is permitted at lower temperatures, e.g. 90% at +20℃. Consideration shall be given to the possible condensation effect caused by temperature changes.
4、Installation inclination not exceeding 5 degrees, and the complete bank of cabinets shall be relatively level (in compliance with GBJ 232-82).
5、The switchgear shall be installed in a location free from severe vibration and shock, and where electrical components are not subject to undue corrosion.
Note: Special requirements from the user may be settled through consultation with our company.
1、Number of main circuit scheme, application purpose, single-line system diagram, arrangement drawing, floor plan of distribution room, etc.
2、Schematic diagram of auxiliary circuit wiring and terminal arrangement drawing.
3、Type, specification and quantity of electrical components in the switchgear.
4、Requirements for control, measurement and protection functions of the switchgear, as well as requirements for other interlocking and automatic devices.
5、If busbar bridges are required for connection between switchgears or to the incoming cabinet, specific data such as rated current-carrying capacity, span and height above ground level of the busbar bridges shall be provided.
6、Type and quantity of accessories and spare parts if required.
7、Detailed description of special environmental conditions and other special requirements for the application of the switchgear shall be provided at the time of ordering.
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