&C low-voltage switchgear purpose
: The device is suitable for power distribution systems in power plants, petroleum, chemical industry, metallurgy, textiles, high-rise buildings and other industries. In large power plants, petrochemical systems and other places with a high degree of automation that require computer interfaces, as power distribution, motor centralized control, reactive power in power supply systems with three-phase AC frequencies, rated operating voltages, and rated currents below Low-voltage power distribution equipment used for power compensation.
The device complies with the standards of "Low-voltage complete switchgear and control equipment", B "Low-voltage complete switchgear", B "Low-voltage withdrawable complete switchgear" and other standards.
Characteristics of C drawer cabinet device
:
: Increase the heat capacity between devices and significantly reduce the additional heat caused by the temperature rise of the adapter to the connectors, cable heads and partition boards. Temperature rise
: The division between functional units and compartments is clear and reliable, and the failure of one unit will not affect the work of other units, so that the failure is limited to the minimum range
: Busbar flat arrangement Make the device have good dynamic and thermal stability and be able to withstand the impact of short-circuit current
: The number of circuits in a single cabinet is large, and full consideration is given to the automation of electric door (machine) groups in large single machine capacity power generation, petrochemical systems and other industries. Need
: The connection of the device to the external cable is completed in the compartment, and the cable can be accessed up and down. The current transformer is installed in the cable compartment, making installation and maintenance convenient
: In the same power distribution system, the short-circuit current can be limited by matching the current-limiting reactor, stabilizing the bus voltage at a certain value, and partially reducing the impact on components Short-circuit strength requirements: The drawer unit has a sufficient number of secondary connectors (units and above are inches, /unit is pairs), which can meet the requirements for the number of computer interface and automatic control loop contacts.
C Drawer Cabinet
Structural Features:
The frame is made of cold-rolled profiles. The two sides of the profile have module and mounting holes respectively, making the assembly of the frame flexible and convenient.
■. The side frame assembly forms of the frame are designed into two types, fully assembled structure and partial (side frame and beam) welded structure, for users to choose.
■. The functional rooms of the switch cabinet are isolated from each other, and the compartments are divided into functional unit rooms, busbar rooms and cable rooms. The functions of each room are relatively independent.
■. The horizontal busbar is arranged flat behind the cabinet to enhance the busbar's ability to resist electrodynamic forces, which is a basic measure to enable the main circuit to have high short-circuit strength.
■.The design of the cable compartment makes it very convenient for cables to go in and out.
■. The module of drawer height is divided into five size series: /unit, unit, /unit, unit, and unit. The rated current of the unit circuit is and below. The drawer changes only in the height dimension, and its width and depth dimensions remain unchanged. Drawers of the same functional unit have good interchangeability, and each cabinet can be equipped with drawers of at most 1 unit or 1/unit of drawers. The drawer inlet and outlet cabinets use different numbers of connectors with the same specification of chip structure according to the current size. The drawer unit is equipped with a mechanical interlocking device. The drawer unit has a sufficient number of secondary connectors (pairs above the unit, pairs above the unit), which can meet the requirements for the number of contact points for computer interfaces and automatic control loops.
■. The drawer panel has obvious marks for opening, closing, testing, pulling out and other positions. The drawer units have mechanical interlocking devices.
■. Drawer inlet and outlet wires use different numbers of connectors with the same specification chip structure according to the current size. The connection between the unit drawer and the cable room adopts rod-type or tube-type structural adapters of the same size according to current levels. /The connection between the unit drawer and the cable room adopts a backplate structural adapter.
Factory direct sales of fully insulated, intelligent GCS low-voltage switch cabinet