MCC Yao distribution tao cabinet

MCC (Motor Control Center) control cabinet, that is, motor control center

A combination of one or more low-voltage switchgear and associated control, measurement, signal, protection, adjustment and the like, which are assembled together with structural parts. The MCC centrally controls a motor in a zone for easy maintenance And management. For example, our company's MCC, including the line into the cabinet, capacitor cabinets, contact cabinets, feeder cabinets and PLC control cabinet components.

MCC means that the motor control center, under normal circumstances rarely use the knife gate, usually each side of the cabinet can reach up to 22 units (including 1/2 and 1/4 unit) domestic seems to make this number, much more foreign The

Outside the drawer in the drawer Contact the thermal relay and the associated automation components according to the actual design will be different, the use of the drawer unit when the operating handle has four positions. Can carry out the maintenance of the experiment, the maintenance of personnel have a greater increase in safety equipment to save the installation space and equipment costs. 400VMCC combination switchgear main equipment and the role of 400VMCC combination switch is mainly air switch, contactor, control and other equipment components, for the following auxiliary equipment to provide power supply 75kW.

Air switch: to provide power to the equipment, air switch with arc capability, you can cut off the large short-circuit current, the device over-current trip protection. Contactor: mainly by the coil, iron core, the main contact and auxiliary joints. The contactor is suitable for frequent operation and is used to control the start and stop operation of the device.

Control change: the 380V voltage into 220V control voltage for the contactor coil, signal relays and lights to provide power. Its primary side from the air switch under the mouth, when the air switch closed, the control becomes charged. Thermal relay: to provide power equipment overload protection, when the equipment is running, the load current exceeds the rated load after a certain multiple, the thermocouple relay action, the main contact is disconnected, cut off the power supply equipment, the corresponding auxiliary contacts also action, cut off the contactor Of the coil power supply. Overload multiple of the general set in more than 1.1 times, the thermocouple action in inverse time law, that is, the overload current multiplier, the greater the shorter the action time. Control fuse: As the overload protection of the control circuit, when the control circuit is overloaded or shorted, the fuse is blown and the fault circuit is removed.

MMC cabinet selection of high-quality components, well-designed, reasonable layout, strict production specifications, taking full account of the electromagnetic effect and thermal effect, to ensure stable and reliable system.

The soft-start MCC control cabinet is further combined to achieve a variety of composite functions. For example: the two control cabinet with control logic, can be composed of "one with a prepared program" for the building of the fire system and spray pumps, life pumps and other systems. If coupled with the PC (programmable controller), you can achieve the fire pump timing (such as half a month) automatic detection, timing automatically shut down; plus the corresponding control logic, you can fire pump and the operation of the system are normal Usually detected, the timing of low-speed low water pressure (no water) to run; in the fire, the implementation of full-speed full load operation. Will be a number of motor with a combination of control logic, can be composed of life pump system or other special system, according to the amount of each successive open the motor, can also be reduced to the motor, to achieve the best efficiency. Can also be based on customer requirements, to achieve more than one motor every time automatic conversion operation, so that each motor are in the same operating life.

MCC (Motor Control Center) control cabinet, that is, motor control center. Soft start MCC control cabinet consists of the following parts: (1) input circuit breaker, (2) soft starter (including electronic control circuit and three-phase thyristor), (3) soft starter bypass contactor, (4 ) Secondary side control circuit (complete manual start, remote start, soft start and direct start and other functions of the selection and operation), a voltage, current display and fault, operation, working status and other indicators.