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MCC's or likewise known as Motor Control Centersare an assembly of one section or more that include a common power bus. These have been utilized in the auto industry ever since the 1950's, in view of the fact that they were utilized lots of electric motors. These days, they are utilized in various industrial and commercial applications.
Motor control centers are a modern practice in factory assembly for some motor starters. This particular machine could include variable frequency drives, programmable controllers and metering. The MCC's are usually seen in the electrical service entrance for a building. Motor control centers commonly are utilized for low voltage, 3-phase alternating current motors which range from 230 volts to 600 volts. Medium voltage motor control centers are designed for large motors that vary from 2300 volts to 15000 volts. These units utilize vacuum contractors for switching with separate compartments in order to accomplish power switching and control.
In factory locations and area which have dusty or corrosive processing, the MCC could be installed in climate controlled separated locations. Normally the MCC would be located on the factory floor close to the machines it is controlling.
For plug-in mounting of individual motor controls, A motor control center has one or more vertical metal cabinet sections with power bus. To be able to complete maintenance or testing, very big controllers can be bolted into place, whereas smaller controllers can be unplugged from the cabinet. Each and every motor controller consists of a solid state motor controller or a contractor, overload relays to protect the motor, fuses or circuit breakers so as to supply short-circuit protection as well as a disconnecting switch so as to isolate the motor circuit. Separate connectors allow 3-phase power to enter the controller. The motor is wired to terminals located in the controller. Motor control centers provide wire ways for field control and power cables.
Each and every motor controller in a motor control center can be specified with different options. These options comprise: extra control terminal blocks, control switches, pilot lamps, separate control transformers, and various types of solid-state and bi-metal overload protection relays. They likewise have various classes of kinds of power fuses and circuit breakers.
Concerning the delivery of motor control centers, there are several choices for the consumer. These could be delivered as an engineered assembly with a programmable controller together with internal control or with interlocking wiring to a central control terminal panel board. On the other hand, they can be supplied prepared for the client to connect all field wiring.
MCC's generally sit on floors which are required to have a fire-resistance rating. Fire stops could be necessary for cables that penetrate fire-rated floors and walls.
