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Motor control centers are a modern method in factory assembly for some motor starters. This machine 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 which vary from 230 volts to 600 volts. Medium voltage motor control centers are made for big motors which range from 2300 volts to 15000 volts. These units make use of vacuum contractors for switching with separate compartments to be able to accomplish power switching and control.
In areas where extremely dusty or corrosive methods are happening, the motor control center can be installed in a separate air-conditioned room. Normally the MCC would be positioned on the factory floor adjacent to the machinery 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 testing or maintenance, really big controllers could be bolted into place, while smaller controllers may be unplugged from the cabinet. Each motor controller consists of a solid state motor controller or a contractor, overload relays to protect the motor, fuses or circuit breakers to supply short-circuit protection as well as a disconnecting switch to be able to isolate the motor circuit. Separate connectors allow 3-phase power to be able to enter the controller. The motor is wired to terminals positioned within the controller. Motor control centers provide wire ways for field control and power cables.
Within a motor control center, every motor controller could be specified with lots of various alternatives. Some of the choices comprise: pilot lamps, separate control transformers, extra control terminal blocks, control switches, and many types of solid-state and bi-metal overload protection relays. They likewise have different classes of types of power fuses and circuit breakers.
