Forklift Drive Motor - MCC's or Motor Control Centersare an assembly of one or more sections that have a common power bus. These have been used in the automobile industry since the 1950's, in view of the fact that they were used a lot of electric motors. Nowadays, they are used in a variety of commercial and industrial applications.
Inside factory assembly for motor starter; motor control centers are fairly common technique. The MCC's consist of variable frequency drives, programmable controllers and metering. The MCC's are usually seen in the electrical service entrance for a building. Motor control centers frequently are used for low voltage, 3-phase alternating current motors that vary from 230 volts to 600 volts. Medium voltage motor control centers are designed for large motors which range from 2300 volts to 15000 volts. These units utilize vacuum contractors for switching with separate compartments in order to accomplish power control and switching.
Within factory locations and area which have dusty or corrosive processing, the MCC can be installed in climate controlled separated locations. Typically the MCC would be positioned 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, very big controllers could be bolted into place, while smaller controllers could be unplugged from the cabinet. Each motor controller consists of a contractor or a solid state motor controller, overload relays so as to protect the motor, fuses or circuit breakers to provide short-circuit protection and a disconnecting switch to be able to isolate the motor circuit. Separate connectors enable 3-phase power so as to enter the controller. The motor is wired to terminals situated in the controller. Motor control centers offer wire ways for power cables and field control.
Every motor controller within a motor control center can be specified with different options. These options consist of: pilot lamps, separate control transformers, extra control terminal blocks, control switches, as well as many kinds of bi-metal and solid-state overload protection relays. They even have different classes of kinds of circuit breakers and power fuses.
Concerning the delivery of motor control centers, there are a lot of choices for the consumer. These can 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 should have a fire-resistance rating. Fire stops may be necessary for cables which go through fire-rated floors and walls.
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