Drive Motor for Forklifts - Motor Control Centers or MCC's, are an assembly of one enclosed section or more, which have a common power bus mostly containing motor control units. They have been used since the 1950's by the auto trade, because they made use of many electric motors. Today, they are used in various industrial and commercial applications.
Inside factory assembly for motor starter; motor control centers are somewhat common technique. The MCC's comprise variable frequency drives, programmable controllers and metering. The MCC's are usually seen in the electrical service entrance for a building. Motor control centers commonly are used for low voltage, 3-phase alternating current motors that vary from 230 V to 600V. Medium voltage motor control centers are intended for big motors that vary from 2300V to 15000 V. These units make use of vacuum contractors for switching with separate compartments to be able to attain power control and switching.
In factory area and locations that have corrosive or dusty processing, the MCC could be installed in climate controlled separated locations. 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. So as to complete testing or maintenance, very large controllers could be bolted into place, while smaller controllers may be unplugged from the cabinet. Each motor controller has a contractor or a solid state motor controller, overload relays to protect the motor, fuses or circuit breakers to provide 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 positioned inside the controller. Motor control centers provide wire ways for power cables and field control.
Each and every motor controller in a motor control center could be specified with several choices. These alternatives comprise: separate control transformers, extra control terminal blocks, control switches, pilot lamps, and various kinds of solid-state and bi-metal overload protection relays. They even comprise various classes of kinds of circuit breakers and power fuses.
There are several alternatives concerning delivery of MCC's to the client. They can be delivered as an engineered assembly with interlocking wiring to a central control terminal panel board or programmable controller along with internal control. Conversely, they could be supplied set for the customer to connect all field wiring.
MCC's commonly sit on floors that must have a fire-resistance rating. Fire stops could be required for cables that penetrate fire-rated walls and floors.
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