Drive Motor for Forklift - Motor Control Centers or also called 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 utilized since the 1950's by the vehicle trade, for the reason that they utilized many electric motors. Today, they are used in different commercial and industrial applications.
Motor control centers are a modern practice in factory assembly for several motor starters. This equipment could include metering, variable frequency drives and programmable controllers. The MCC's are usually seen in the electrical service entrance for a building. Motor control centers frequently are utilized for low voltage, 3-phase alternating current motors which range from 230 V to 600V. Medium voltage motor control centers are intended for big motors that range from 2300V to 15000 V. These units utilize vacuum contractors for switching with separate compartments so as to accomplish power switching and control.
In places where very dusty or corrosive processes are happening, the motor control center could be installed in a separate air-conditioned room. Typically the MCC would 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. In order to complete testing or maintenance, very large controllers can be bolted into place, while smaller controllers can be unplugged from the cabinet. Each motor controller has a solid state motor controller or a contractor, overload relays 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 inside the controller. Motor control centers supply wire ways for power cables and field control.
Each motor controller inside a motor control center could be specified with various options. These choices comprise: separate control transformers, extra control terminal blocks, control switches, pilot lamps, as well as various kinds of solid-state and bi-metal overload protection relays. They even comprise various classes of kinds of circuit breakers and power fuses.
Concerning the delivery of motor control centers, there are several options for the consumer. These could 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 customer to connect all field wiring.
MCC's commonly sit on floors which should have a fire-resistance rating. Fire stops can be required for cables that go through fire-rated walls and floors.
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