Suitable for power plant, petroleum, chemical, metallurgy, textile, high-rise building and other industries of power distribution system. In large power plants, petrochemical systems and other high degree of automation, requiring the interface with the computer, as rated current 4000A and below the power generation, power supply system in the distribution, motor centralized control, reactive power compensation for the use of low-voltage complete sets of power distribution devices
1. The main frame of the device is made of 8MF steel, and the frame adopts two structural forms of assembly and partial welding. There are mounting modulus holes E=20㎜ on the main frame.
2. Increase the heat capacity of the adapter to greatly reduce the additional temperature rise caused by the temperature rise of the adapter to the connector, cable head, and partition.
3. The separation between functional units and compartments is clear, reliable, independent, and does not affect the work of other units due to the failure of a certain unit, so that the fault is limited to the minimum range.
4. The bus bar flat arrangement makes the dynamic and thermal stability of the device good, and can withstand the impact of 80/176kA short circuit current.
5. The number of circuits of MCC cabinet can be as many as 22 times, fully considering the needs of large single-unit capacity power generation, petrochemical systems and other industries.
6. The connection between the device and the external cable is completed in the cable compartment, and the cable can be up and down. The zero sequence current transformer is placed in the cable compartment to facilitate installation and maintenance.
7. The same power distribution system can match the current limiting reactor to limit the short circuit current, stabilize the bus voltage at a certain value, and partially reduce the requirements for short circuit strength of components.
8. Drawer units have a sufficient number of secondary plugins (32 pairs for 1 unit and above, 20 pairs for 1/2 unit). It can meet the requirements of the number of contact points of computer interface and automatic control loop.
Technical parameter：
