GGD Low-voltage fixed switchgear use as power conversion, distribution and control power in lighting and power distribution equipment. Suit for the power plants, substations, factories and mines which AC is 50Hz, rated working voltage 380V and rated current up to 3150A distribution system.
?Performance characteristics
According to the higher officer request in Department of Energy, the majority of electricity consumers and the requirements of the design department that come out the new low-voltage distribution cabinet: GGD Low-voltage fixed switchgear which based on safety, economic, reasonable, reliable design principle and has high breaking capacity, good dynamic and thermal stability, flexible electrical program, convenient combination, series, practical, novel structure and high protection class. Besides that it can be used as the replacement of low voltage switchgear products.
?Selection and configuration
In general, unit selection and configuration of an electric switching equipment to begin from the following aspects:
?Cabinet choices:
1. Materials can be divided to cold rolled steel or angle iron (for welding cabinet with feature of low cost, , high strength, general-purpose type); deposited aluminum zinc steel or galvanized steel (used to assemble the cabinet); stainless steel plate (non-conducting magnetic); aluminum ( not permeability); SMC composite unsaturated materials etc.
2. Installation way: indoor and outdoor.
? The cabinet's main electrical components brand choice:
1. High price: ABB, Schneider, United States AB, Mitsubishi, Siemens, Omron, Muller, Weidmuller, Phoenix, Hager, Legrand, etc.
2. Moderate price: Changshu, the Long March, China through Shanghai Wuchang, Shihlin, refinement and so on.
3. Low price: Tengen, Chint, West Germany, the people's electrical Watertown, Taian, river, etc.
? Cabinet auxiliary components
Copper busbar connections, aluminum row of connection and wires connected.
? Meet the standards
? IEC439 <Low-voltage switchgear and control equipment>

Use Conditions
? The ambient air temperature is not higher than +40 ºC and lower -5 ºC.
? Indoor installation: the altitude of using place must not exceed 2000M;
? The relative humidity in the ambient air maximum temperature of +40 ºC does not exceed 50% and at lower temperatures is allowed greater relative temperature. (For example, at +20 ºC is 90%) Should takes into account the impact due to changes in temperature may occasionally produce condensation;
? When installing equipment the vertical gradient is not more than 5 degrees;
? The device should be installed where are without severe vibration and shock and not enough to make the electrical components corrosion sites.
? If users have special requirements that can be resolved in consultation with the manufacturer.

Order Attention
The orders from client should provide the following information: (Client can also provide specific requirements, all of the following to provide information to our engineers for the user design, and then handed over to production after the final validation of the user)
? Product model (including the main circuit scheme number and the auxiliary circuit scheme);
? Combination of the main circuit system sequence diagram;
? Electrical schematic diagram of the auxiliary circuit;
? List of cabinet components;
? Other special requirements inconsistent with the normal conditions usage.