Improve the heat capacity of the adapter, and greatly reduce the additional temperature rise caused by the temperature rise of the adapter to the connector, cable head and partition;
The separation between functional units and compartments is clear and reliable, and the failure of a certain unit does not affect the work of other units, so that the failure is limited to the minimum range;
Bus bar flat arrangement makes the device dynamic and thermal stability is good, can withstand 80/176kA short circuit current impact;
The number of circuits of MCC cabinet is as high as 22 times, fully considering the needs of large single capacity power generation, petrochemical system and other industries automated electric door (machine) group;
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;
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;
The drawer unit has a sufficient number of secondary plugins (32 pairs for 1 unit and above, 20 pairs for 1/2 unit) to meet the requirements of the number of contact points of the computer interface and automatic control loop.
1. The altitude does not exceed 2000m.
2. The ambient air temperature is not higher than +40 ° C, and the average temperature within 24 hours is not higher than +35 ° C, around. The air temperature is not lower than -5℃.
3.Atmospheric conditions: The air is clean, the relative humidity does not exceed 50% when the temperature is +40℃, and the temperature is relatively high. High relative humidity is allowed at low temperatures.
4. No fire, explosion danger, serious pollution, chemical corrosion and violent vibration of the place, pollution, etc. Class III, creepage specific distance ≥2.5cm/KV, and the tilt to the vertical plane does not exceed 5°.
5. The control center is suitable for the transport and storage process of the following temperature, -25℃~+55℃, in a short time. Do not exceed +70℃.
GCS type low-voltage draw-out switchgear is designed and developed by two joint design teams according to the requirements of industry authorities, the majority of power users and design units. The low-voltage extraction switchgear is in line with the national conditions, has higher technical performance indicators, can adapt to the development needs of the power market and can compete with the existing imported products, and the GCS type low-voltage extraction switchgear has been widely used by power users. The device is 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 places with high degree of automation and requiring computer interface, as a three-phase AC frequency of 50 (60) Hz, rated operating voltage of 380V (400), (600), A low-voltage complete set of power distribution devices for power distribution, motor centralized control and reactive power compensation in power generation and power supply systems with rated current below 4000A. The device conforms to IEC439-1 "Low-voltage Switchgear and control equipment", GB7251 "low-voltage switchgear", ZBK36001 "low-voltage withdraw-type switchgear" and other standards.
