Forklift Drive Motor - Motor Control Centers or also called MCC's, are an assembly of one or more enclosed sections, that have a common power bus principally consisting of motor control units. They have been used ever since the 1950's by the automobile business, for the reason that they used lots of electric motors. These days, they are used in other industrial and commercial applications.
Within factory assembly for motor starter; motor control centers are somewhat 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 often are utilized for low voltage, 3-phase alternating current motors that range from 230 volts to 600 volts. Medium voltage motor control centers are designed for big motors which range from 2300V to 15000 V. These units use vacuum contractors for switching with separate compartments so as to attain power switching and control.
Within factory area and locations that have corrosive or dusty processing, the MCC can be installed in climate controlled separated locations. Normally the MCC will be situated on the factory floor near the machines 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 could be unplugged from the cabinet to complete maintenance or testing, whereas really big controllers could be bolted in place. Every motor controller has a solid state motor controller or a contractor, overload relays to protect the motor, circuit breaker or fuses to provide short-circuit protection and a disconnecting switch to be able to isolate the motor circuit. Separate connectors allow 3-phase power to enter the controller. The motor is wired to terminals positioned within the controller. Motor control centers offer wire ways for power cables and field control.
Each and every motor controller inside a motor control center can be specified with various alternatives. These alternatives 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 even comprise various classes of types of circuit breakers and power fuses.
There are lots of alternatives regarding delivery of MCC's to the client. They could be delivered as an engineered assembly with interlocking wiring to a central control terminal panel board or programmable controller along with internal control. Conversely, they could be provided prepared for the customer to connect all field wiring.
MCC's usually sit on floors that should have a fire-resistance rating. Fire stops can be required for cables that go through fire-rated walls and floors.
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