General
MCS AC LV fixed type switchgear is applicable to the distribution system with AC 50Hz, rated working voltage 380V, rated current to 3150A below in power station, substation, plant enterprise etc., used for power transfer, distribution and control for power, lighting and distribution devices. The product has characteristics of high breaking capacity, fine dynamic and thermal stability, flexible electric project, convenient combination, better serial practicability, novel structure and high protection grade etc. It accords with the standards IEC439” Low voltage complete switch device and control device” and GB7251.1 “Low voltage complete switch device” etc.
Characteristics
◆The body of MCS AC LV fixed type switchgear adopts universal cabinet type. Framework is assembled with 8MF cold bending bar steel through part welding. Framework components and special mating elements are matched by bar steel pointed manufactory for ensuring the precision and quality of cabinet. Components of universal cabinet is designed according to module principle, and with 20 modulus mounting hole and high universal coefficient.
◆Completely in view of the heat rejection during cabinet running. Heat rejection slots of different quantities are installed in upper and underside both ends of cabinet.
◆According to the requirements on mold design for modern industry products, adopting the method of golden mean ratio to design cabinet outline and parting dimensions of each part, to make the whole cabinet beautiful and decent. Cabinet gate is connected with framework with rotation axis type movable hinge. With convenient installation and disassembly. One mount type rubber strip is set in edge fold of gate. Filler rod between gate and framework has certain compression stroke when closing the gate. It can prevent gate from impacting cabinet directly and also advance the protection grade for gate.
◆Connect the meter gate set with electrical components with framework by multistrand soft copper wire. Connect the mounting pieces inside the cabinet with framework by knurled screws. The whole cabinet constructs complete earthing protective circuit.
◆Top cover of cabinet can be disassembled if necessary for convenience to the assembly and adjustment for main bus bar at site. Four squares of cabinet are set with slinger for hoisting and shipping.
Conditions for normal operating environment
1. Ambient air temperature: -5″C~+40°C and the average temperature should not exceed +35″C in 24h. .
2. Install and use indoors. Altitude above sea level for operation site should not exceed 2000M’.
3. Relative humidity should not exceed 50% at max temperature +40C . Higher relative humidity is allowed at lower temperature. Ex.90% at +20″C. But in view of the temperature change, it is possible that moderate dews will produce casually.
4. Installation gradient not exceed 5°.
5. Install in the places without fierce vibration and shock and the sites insufficient to erode the electrical components.
6. Any specific requirement, consult with manufactory. .
7. Protection grade of cabinet: IP30. User can choose within IP20~IP40 according to environmental requirements.
