Drive Motor for Forklift - Motor Control Centers or otherwise called MCC's, are an assembly of one or more enclosed sections, that have a common power bus principally containing motor control units. They have been utilized ever since the 1950's by the automobile trade, since they utilized a lot of electric motors. Nowadays, they are utilized in different industrial and commercial applications.
In factory assembly for motor starter; motor control centers are fairly common technique. The MCC's comprise programmable controllers, metering and variable frequency drives. The MCC's are normally seen in the electrical service entrance for a building. Motor control centers frequently are utilized for low voltage, 3-phase alternating current motors which range from 230 volts to 600 volts. Medium voltage motor control centers are made for large motors which vary from 2300V to 15000 V. These units make use of vacuum contractors for switching with separate compartments in order to accomplish power control and switching.
In locations where very dusty or corrosive processes are occurring, the motor control center may be established in a separate air-conditioned room. Typically the MCC will be located on the factory floor close to 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 can be unplugged from the cabinet to complete maintenance or testing, while very large controllers could be bolted in place. Each motor controller has a solid state motor controller or a contractor, overload relays In order to protect the motor, circuit breaker or fuses to provide short-circuit protection as well as a disconnecting switch in order to isolate the motor circuit. Separate connectors allow 3-phase power to be able to enter the controller. The motor is wired to terminals situated inside the controller. Motor control centers supply wire ways for power cables and field control.
Each motor controller inside a motor control center can be specified with a range of alternatives. These options include: extra control terminal blocks, control switches, pilot lamps, separate control transformers, as well as many kinds of bi-metal and solid-state overload protection relays. They even have various classes of types of power fuses and circuit breakers.
There are numerous alternatives regarding delivery of MCC's to the customer. They can 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 can be supplied set for the client to connect all field wiring.
MCC's generally sit on floors which must have a fire-resistance rating. Fire stops may be necessary for cables that go through fire-rated walls and floors.
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