GCS pull-out switchgear package

GCS devices are suitable for power distribution systems in power plants, petroleum, chemical, metallurgy, textile, high-rise buildings and other industries. In large-scale power plants, petrochemical systems and other places with a high degree of automation and requiring computer interface, as a three-phase AC frequency of 50 (60) Hz, rated working voltage of 380V (400V), (660M), rated current of 4000A and below. Power distribution in the power supply system. Low-voltage complete power distribution device for centralized motor control and reactive power compensation.

Category:

Low voltage switchgear series

Keywords: transformer, box-type substation, medium and low voltage switchgear

Performance indicators

◆ The design of the device meets the following standards

◆ IEC439-1 low-voltage switchgear and control equipment

◆ GB 7251 low voltage switchgear

◆ ZBK 36001 low-voltage withdrawable complete set of switchgear device characteristics

◆ Improve the heat capacity of the adapter, and greatly reduce the additional temperature rise brought by the temperature rise of the adapter to the connector, cable head and partition plate.

◆ The separation between functional units and compartments is clear and reliable, and the failure of one unit does not affect the work of other units, so that the fault is limited to the minimum range.

◆ The flat arrangement of the bus bar makes the device have good dynamic and thermal stability and can withstand the impact of 80/176kA short-circuit current.

◆ The number of loops of MCC cabinet single cabinet is as large as 22 times, fully considering the needs of large single-capacity power generation, petrochemical system and other industries of automated motor groups.

◆ The connection between the device and the external cable is completed in the cable compartment, and the cable can go up and down. The current transformer is installed in the cable compartment to make installation and maintenance convenient.

◆ The same power distribution system can limit the short-circuit current through the current limiting reactor matching, stabilize the bus voltage at a certain value, and partially reduce the short-circuit strength requirements for components.

◆ The drawer unit has a sufficient number of secondary plug-in connectors (32 pairs for 1 unit and above, 20 pairs for 1/2 unit), which can meet the requirements of computer interface and automatic control loop docking points.

Auxiliary circuitry

The design of the auxiliary circuit diagram conforms to the relevant design technical regulations such as the "Technical Regulations on the Design of Electricity for Thermal Power Plant Plants", and is suitable for the low-voltage plant (institute) power consumption system of power plants and substations and the low-voltage power distribution system in factories and mining enterprises and high-rise buildings.

The auxiliary circuit scheme is designed according to the main circuit scheme divided into power inlet, feeder (PC) and motor feeder (MCC) operation control function unit.