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Motor control centers are a modern method in factory assembly for several motor starters. This particular equipment can comprise variable frequency drives, programmable controllers and metering. The MCC's are commonly utilized in the electrical service entrance for a building. Motor control centers often are utilized for low voltage, 3-phase alternating current motors that range from 230 V to 600V. Medium voltage motor control centers are intended for large motors that range from 2300V to 15000 V. These units utilize vacuum contractors for switching with separate compartments to be able to attain power control and switching.
In places where really dusty or corrosive processes are happening, the motor control center may be installed in a separate air-conditioned room. Typically the MCC would be located on the factory floor near the equipment 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, really large controllers could be bolted into place, while smaller controllers can be unplugged from the cabinet. Each and every motor controller has a solid state motor controller or a contractor, overload relays so as to protect the motor, circuit breaker or fuses to be able to supply short-circuit protection as well as a disconnecting switch to be able to isolate the motor circuit. Separate connectors enable 3-phase power to enter the controller. The motor is wired to terminals located in the controller. Motor control centers supply wire ways for field control and power cables.
Within a motor control center, each motor controller could be specified with many different alternatives. Some of the options include: pilot lamps, separate control transformers, extra control terminal blocks, control switches, and various types of solid-state and bi-metal overload protection relays. They also have various classes of kinds of circuit breakers and power fuses.
