Forklift Drive Motor - Motor Control Centers or otherwise called MCC's, are an assembly of one or more enclosed sections, which have a common power bus principally comprising motor control units. They have been used ever since the 1950's by the auto business, since they used lots of electric motors. Now, they are utilized in other industrial and commercial applications.
Motor control centers are a modern practice in factory assembly for several motor starters. This machinery could include metering, variable frequency drives and programmable controllers. The MCC's are usually found 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 volts to 600 volts. Medium voltage motor control centers are designed for big motors that vary from 2300V to 15000 V. These units utilize vacuum contractors for switching with separate compartments in order to accomplish power control and switching.
In places where very corrosive or dusty processes are occurring, the motor control center may be installed in a separate air-conditioned room. Normally 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. In order to complete testing or maintenance, very big controllers could be bolted into place, while smaller controllers can 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, fuses or circuit breakers to supply 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 positioned in the controller. Motor control centers provide wire ways for field control and power cables.
Every motor controller within a motor control center can be specified with various options. These alternatives comprise: extra control terminal blocks, control switches, pilot lamps, separate control transformers, as well as various types of bi-metal and solid-state overload protection relays. They also comprise different classes of types of circuit breakers and power fuses.
Concerning the delivery of motor control centers, there are numerous choices for the client. These could be delivered as an engineered assembly with a programmable controller along with internal control or with interlocking wiring to a central control terminal panel board. Conversely, they can be supplied prepared for the client to connect all field wiring.
MCC's commonly sit on floors which are required to have a fire-resistance rating. Fire stops can be needed for cables that go through fire-rated walls and floors.
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