China supplier customized withdrawable medium voltage switchgear with IEC standards

Standard for withdrawable medium voltage switchgear

This product complies with the Standards:

• GB7251 Low-voltage Switchgear Assembly and Control Equipment ,
• JB / T9661 Low-voltage Drawer Type Switchgear,
• IEC 60439-1 Low - voltage Switchgear Assembly and Control Equipment .

Structure for withdrawable medium voltage switchgear

The basic frame of distribution cabinet adopts assembled combined structure and it is manufactured by fastening and connecting the profile steels with bolts, and then it is installed with corresponding door, closing plate, partition plate, installation bracket and bus and function units, etc. into a complete switchgear according to the change of scheme. The structural parts in switchgear are galvanized and adopt modular installation (modulus E=20mm). The switchgear panel is made of high-quality cold-rolled steel plates which are machined and shaped by numerically controlled machine tool, and after pickling and phosphating, the surface undergoes
electrostatic plastic spraying and is resistant to wear and corrosion, so it has solid mechanical strength and reliable ground protection continuity.

The switchgear compartment is divided into function unit chamber, bus chamber and cable chamber, and the function of each unit is independent of each other and the areas are strictly isolated by continuously grounded metal plate, thus ensuring the safety of use and preventing spreading of accidents.

MCC cabinet drawer has five specifications of 200mm, 300mm, 400mm, 600mm and 200/2mm. The drawer has connected position, test position and separated position. Mechanical interlocking device is equipped between each drawer and switch. Only when the switch is disconnected, can the drawer be drawn out or inserted. When the switch is closed, the drawer may not be drawn out or inserted. To prevent unauthorized operation, the operating mechanism can lock the switch in OFF position with a padlock. The function unit drawers of same specification are interchangeable, and the drawer of each function unit has 20 pairs of auxiliary contacts, to meet the needs of automatic monitoring systems of operation control, electricity metering and computer interface in different place.

Product Characteristics:

1. Metal-enclosed and separately arranged, with high protection Category

2. Enclosure with Front -Cabinet protection and back-cabinet protection, the Board can be arranged and fixed along with the wall to save the spaces

3. Protection Category of enclosure reaches to IP4X,

4. Elec.Line Cabinet with full spaces for mount and arrange in-coming and out-going lines for the convenience of Fixing, protecting and maintaining

Details for withdrawable medium voltage switchgear

The high voltage withdrawable enclosed switchgear is mainly used in power plants, small- and mediumsized power generators, industrial and mining enterprises, and secondary substations of power system for power receiving, power transmission, and startup of large-sized high-voltage motor in order to implement control, protection, and monitor.