Forklift Drive Motor - MCC's or Motor Control Centersare an assembly of one section or more that include a common power bus. These have been used in the automobile business ever since the 1950's, for the reason that they were used lots of electric motors. These days, they are used in other commercial and industrial applications.
In factory assembly for motor starter; motor control centers are somewhat common technique. The MCC's comprise metering, variable frequency drives and programmable controllers. The MCC's are usually found in the electrical service entrance for a building. Motor control centers frequently are used for low voltage, 3-phase alternating current motors which vary from 230 V to 600V. Medium voltage motor control centers are designed for large motors that range from 2300 volts to 15000 volts. These units make use of vacuum contractors for switching with separate compartments to be able to accomplish power switching and control.
In locations where really corrosive or dusty processes are taking place, the motor control center may be installed in a separate air-conditioned room. Typically the MCC will be situated on the factory floor close to the machinery it is controlling.
A MCC has one or more vertical metal cabinet sections with power bus and provisions for plug-in mounting of individual motor controllers. Smaller controllers can be unplugged from the cabinet so as to complete testing or maintenance, while really big controllers can be bolted in place. Every motor controller consists of a contractor or a solid state motor controller, overload relays to protect the motor, circuit breaker or fuses to supply short-circuit protection as well as a disconnecting switch so as to isolate the motor circuit. Separate connectors allow 3-phase power so as to enter the controller. The motor is wired to terminals located inside the controller. Motor control centers provide wire ways for field control and power cables.
Within a motor control center, each and every motor controller could be specified with numerous various alternatives. Some of the choices consist of: extra control terminal blocks, control switches, pilot lamps, separate control transformers, and various kinds of bi-metal and solid-state overload protection relays. They likewise comprise various classes of kinds of power fuses and circuit breakers.
Concerning the delivery of motor control centers, there are various choices for the customer. 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. Conversely, they can be supplied prepared for the customer to connect all field wiring.
MCC's generally sit on floors that should have a fire-resistance rating. Fire stops can be necessary for cables that penetrate fire-rated walls and floors.
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