Forklift Drive Motor - Motor Control Centers or otherwise called MCC's, are an assembly of one enclosed section or more, which have a common power bus principally comprising motor control units. They have been utilized ever since the 1950's by the vehicle industry, since they used a lot of electric motors. These days, they are utilized in other commercial and industrial applications.
Motor control centers are a modern practice in factory assembly for several motor starters. This particular machinery could comprise programmable controllers, metering and variable frequency drives. The MCC's are normally used in the electrical service entrance for a building. Motor control centers frequently are utilized for low voltage, 3-phase alternating current motors that vary from 230 V to 600V. Medium voltage motor control centers are intended for large motors which vary from 2300 volts to 15000 volts. These units utilize vacuum contractors for switching with separate compartments in order to achieve power switching and control.
In areas where really corrosive or dusty processes are occurring, the motor control center may be established in a separate air-conditioned room. Usually the MCC will be situated on the factory floor adjacent to 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 may be unplugged from the cabinet to be able to complete maintenance or testing, whereas extremely big controllers can be bolted in place. Each and 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 provide short-circuit protection as well as a disconnecting switch in order to isolate the motor circuit. Separate connectors enable 3-phase power so as to enter the controller. The motor is wired to terminals located in the controller. Motor control centers provide wire ways for power cables and field control.
Within a motor control center, each and every motor controller can be specified with lots of various alternatives. Some of the alternatives comprise: pilot lamps, separate control transformers, extra control terminal blocks, control switches, and many types of bi-metal and solid-state overload protection relays. They also comprise various classes of types of circuit breakers and power fuses.
Regarding the delivery of motor control centers, there are various choices for the client. 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 could be provided set for the customer to connect all field wiring.
Motor control centers typically sit on the floor and should have a fire-resistance rating. Fire stops could be necessary for cables which penetrate fire-rated walls and floors.
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