Forklift Drive Motor

Forklift Drive Motor - Motor Control Centers or MCC's, are an assembly of one or more enclosed sections, that have a common power bus principally containing motor control units. They have been used ever since the 1950's by the auto trade, for the reason that they used lots of electric motors. Now, they are utilized in other industrial and commercial applications.

In factory assembly for motor starter; motor control centers are quite common practice. The MCC's include variable frequency drives, programmable controllers and metering. The MCC's are usually utilized in the electrical service entrance for a building. Motor control centers frequently are utilized for low voltage, 3-phase alternating current motors that range from 230 V to 600V. Medium voltage motor control centers are made for big motors which vary from 2300V to 15000 V. These units utilize vacuum contractors for switching with separate compartments in order to achieve power switching and control.

Within factory locations and area that have dusty or corrosive processing, the MCC can be installed in climate controlled separated locations. Usually the MCC will be located on the factory floor near the machinery it is controlling.

A MCC has one or more vertical metallic cabinet sections with power bus and provisions for plug-in mounting of individual motor controllers. Smaller controllers can be unplugged from the cabinet in order to complete testing or maintenance, whereas really large controllers can be bolted in place. Each motor controller has a solid state motor controller or a contractor, overload relays to protect the motor, circuit breaker or fuses in order to provide short-circuit protection and a disconnecting switch to be able to isolate the motor circuit. Separate connectors enable 3-phase power to be able to enter the controller. The motor is wired to terminals situated inside the controller. Motor control centers offer wire ways for field control and power cables.

Each motor controller in a motor control center can be specified with a range of options. These choices comprise: control switches, pilot lamps, separate control transformers, extra control terminal blocks, as well as many kinds of solid-state and bi-metal overload protection relays. They even have various classes of types of circuit breakers and power fuses.

There are numerous options regarding delivery of MCC's to the customer. They can be delivered as an engineered assembly with interlocking wiring to a central control terminal panel board or programmable controller together with internal control. Conversely, they could be supplied ready for the client to connect all field wiring.

Motor control centers usually sit on the floor and should have a fire-resistance rating. Fire stops could be necessary for cables which go through fire-rated walls and floors.

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