Forklift Drive Motor - MCC's or Motor Control Centersare an assembly of one or more sections which include a common power bus. These have been utilized in the auto industry since the 1950's, for the reason that they were used a large number of electric motors. These days, they are used in different commercial and industrial applications.
Motor control centers are a modern method in factory assembly for several motor starters. This machine could consist of programmable controllers, metering and variable frequency drives. The MCC's are commonly used in the electrical service entrance for a building. Motor control centers often are utilized for low voltage, 3-phase alternating current motors that 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 use vacuum contractors for switching with separate compartments so as to accomplish power switching and control.
In places where really corrosive or dusty processes are happening, the motor control center can be established in a separate air-conditioned room. Usually the MCC will be situated on the factory floor next to the equipment 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 to complete maintenance or testing, while very big controllers could be bolted in place. Every motor controller has a contractor or a solid state motor controller, overload relays so as to protect the motor, fuses or circuit breakers to supply short-circuit protection as well as a disconnecting switch in order to isolate the motor circuit. Separate connectors allow 3-phase power in order to enter the controller. The motor is wired to terminals situated within the controller. Motor control centers offer wire ways for field control and power cables.
Every motor controller inside a motor control center can be specified with various options. These choices include: pilot lamps, separate control transformers, extra control terminal blocks, control switches, and many kinds of bi-metal and solid-state overload protection relays. They likewise have various classes of types of circuit breakers and power fuses.
Concerning the delivery of motor control centers, there are various alternatives for the customer. 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 could be provided set for the client to connect all field wiring.
Motor control centers typically sit on the floor and must have a fire-resistance rating. Fire stops can be needed for cables which penetrate fire-rated floors and walls.
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