The HNGCS low-voltage withdrawable switchgear device is suitable for low-voltage distribution systems in power plants, petroleum, chemical, metallurgical, textile, high-rise buildings, and other industries. In places with high automation and computer interface requirements such as large power plants and petrochemical systems, it is a low-voltage complete distribution device used for power distribution, centralized control of electric motors, and reactive power compensation in power generation and supply systems with a three-phase AC frequency of 50 (60) Hz, rated operating voltage of 380V (400), (600), and rated current of 4000A or below.
Main technical parameters
Auxiliary circuit AC 380, 220, 24V
DC 220, 110V
Vertical busbar rated current 1000A
Rated peak withstand current 105 (176) KA
Rated short-time withstand current 50 (80) KA
Dimensions: Width * Depth * Height mm: 600 (800, 1000) * 600 (800, 1000) * 2200
The dimensions of a unit drawer are: 160 (height) x 560 (width) x 410 (depth) mm;
The drawer can be divided into five series: 1/2 unit, 1 unit, 1 and 1/2 unit, and 3 unit
Product Features
Improve the thermal capacity of the adapter and significantly reduce the additional temperature rise caused by the temperature rise of the adapter to the connectors, cable heads, and partitions. The separation between functional units and isolation is clear and reliable, and the failure of one unit does not affect the operation of other units, limiting the fault to the minimum range.
The busbar flat arrangement device has good thermal stability and can withstand the impact of 80/176KA short-circuit current. The number of circuits in a single MCC cabinet can reach up to 22, fully considering the needs of automated electric door (machine) groups in industries such as large single machine capacity power plants and petrochemical systems. The connection between the device and external cables is completed in the cable compartment, and the cables can enter and exit vertically. The zero sequence current transformer is placed in the cable compartment for easy installation and maintenance. The same power distribution system can limit short-circuit current by matching current limiting reactors, stabilize 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 connectors (32 pairs for 1 unit and above, and 20 pairs for 1/2 unit) to meet the requirements for the number of contact points for computer interfaces and self-control circuits.
