Details 1. Atmospheric conditions: air cleaner, the relative humidity at the highest temperature is + 40 ℃ not more than 50% in the lower temperature allows a higher relative humidity, for example, at + 20 ℃ 90%, but it should be Taking into account the change in temperature may occasionally produce moderate condensation. 2. The altitude does not exceed 2000m. 3. This product is suitable for the following temperature during transportation and storage: the range between -25 ℃ to + 55 ℃ in a short time (less than 24h) up to + 70 ℃, the product should not be at these extreme temperatures were any irreversible damage, but under normal conditions should be able to work properly. 4. If the above conditions are not met, the user and the manufacturer should be resolved through consultation. ■ drawer units (motor control unit, part feeding unit) breaker primary election CM1 series, RMM1 series MCCB, part of the selection NS, S series. These switches have a good performance, compact, short arc or no arc, characterized by high technical and economic indicators, can meet the requirements of the switchgear. ■ disconnectors and fuse switch disconnectors selected Q series. The series of high-reliability, breaking ability, and can achieve a mechanical interlock. ■ NT series fuse primary election. AC contactor selection B Series, LC1-D series. The switchgear features ■ increase the heat capacity of the adapter, additional temperature reduced significantly due to the temperature rise adapter connectors, cable head, spacer plates brought. ■ between functional units are separated between compartments clear, reliable, not due to failure of a unit of work and affect other units, so that failure confined to a minimum. ■ Bus flat-mounted arrangement of the switching cabinet dynamic, thermal stability, can withstand 80 / 176kA short circuit current impact. ■ Maximum number of loops MCC cabinet single cabinet to 22 times, give full consideration to the large stand-alone capacity power plants, petrochemical and other industries automation electric gate (machine) group needs. ■ switchgear connected to external cables in the cable chamber is completed, the cable can be up and down and out. Zero sequence current transformer set cable compartment makes installation and maintenance. ■ The same power distribution system, it can match limiting reactors limit short-circuit current, bus voltage stable at a certain value, but also reduce the component parts of the short-circuit strength requirements. ■ drawer unit has a sufficient number of secondary connectors (1 unit and up to 32 pairs, 1/2 units of 20 pairs.) To meet the computer interface and automatic control loop requirements on the number of contacts. ● same size drawer can easily be interchanged without jamming and collision phenomenon. ● ground contact between the drawer and the cabinet should be in close contact, when the drawer is pushed, the drawer ground contacts than the first contact with the main contacts, ground contacts after the main contacts to open than when pulled. ● meter scale tuning, transformer turns ratio and polarity should be correct. ● fuse fuse specifications should meet the engineering requirements. ● protection rating and setting should be correct and reliable operation. ● 1000 Megohmmeter measure the insulation resistance of not less than 1MΩ. ● connecting the bus should be well insulated supports, installation pieces and other accessories installation should be strong and reliable. ■ PRECAUTIONS ● switchgear is not wall mounted, front operation, maintenance of low-voltage distribution cabinet duplex. Cabinet and maintenance access doors must be qualified through examination professionals to enter or open operation, inspection and maintenance. ● air circuit breakers, molded case circuit breaker after several hours together, especially after short-circuit, after closing, will contact local burn and produce carbon-based material, the contact resistance increases, the circuit breaker should use instructions maintenance and repair.