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Motor control centers are a modern method in factory assembly for several motor starters. This particular equipment can comprise metering, variable frequency drives and programmable controllers. The MCC's are usually utilized 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 big motors that range from 2300V to 15000 V. These units make use of vacuum contractors for switching with separate compartments to be able to accomplish power control and switching.
In areas where extremely dusty or corrosive methods are happening, the motor control center can be established in a separate air-conditioned room. Typically the MCC will be situated on the factory floor adjacent to 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. To complete testing or maintenance, really large controllers could be bolted into place, whereas smaller controllers may be unplugged from the cabinet. Every motor controller consists of a solid state motor controller or a contractor, overload relays In order to protect the motor, circuit breaker or fuses to provide short-circuit protection and a disconnecting switch to be able to isolate the motor circuit. Separate connectors allow 3-phase power in order to enter the controller. The motor is wired to terminals located in the controller. Motor control centers offer wire ways for field control and power cables.
Each and every motor controller in a motor control center can be specified with a range of choices. These alternatives comprise: control switches, pilot lamps, separate control transformers, extra control terminal blocks, as well as various types of solid-state and bi-metal overload protection relays. They also have various classes of types of circuit breakers and power fuses.
