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Inside factory assembly for motor starter; motor control centers are fairly common method. The MCC's comprise variable frequency drives, programmable controllers and metering. The MCC's are normally found in the electrical service entrance for a building. Motor control centers commonly are utilized for low voltage, 3-phase alternating current motors that vary from 230 V to 600V. Medium voltage motor control centers are made for large motors which range from 2300V to 15000 V. These units utilize vacuum contractors for switching with separate compartments in order to achieve power switching and control.
Inside factory locations and area that have corrosive or dusty processing, the MCC could be installed in climate controlled separated locations. Usually the MCC would be positioned 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. So as to complete maintenance or testing, extremely big controllers can be bolted into place, while smaller controllers could be unplugged from the cabinet. Each and every motor controller has a contractor or a solid state motor controller, overload relays to protect the motor, circuit breaker or fuses in order to supply short-circuit protection and a disconnecting switch in order to isolate the motor circuit. Separate connectors enable 3-phase power to enter the controller. The motor is wired to terminals positioned within the controller. Motor control centers offer wire ways for power cables and field control.
Inside a motor control center, each motor controller could be specified with a lot of different choices. Some of the choices consist of: pilot lamps, separate control transformers, extra control terminal blocks, control switches, and numerous kinds of solid-state and bi-metal overload protection relays. They likewise have different classes of kinds of power fuses and circuit breakers.
