Forklift Drive Motors - Motor Control Centers or also called MCC's, are an assembly of one enclosed section or more, that have a common power bus mostly consisting of motor control units. They have been used since the 1950's by the auto business, in view of the fact that they made use of lots of electric motors. Today, they are utilized in different commercial and industrial applications.
Within factory assembly for motor starter; motor control centers are quite common technique. The MCC's comprise metering, variable frequency drives and programmable controllers. The MCC's are commonly seen in the electrical service entrance for a building. Motor control centers frequently are utilized for low voltage, 3-phase alternating current motors which vary from 230 V to 600V. Medium voltage motor control centers are intended for big motors which range from 2300 volts to 15000 volts. These units make use of vacuum contractors for switching with separate compartments so as to accomplish power switching and control.
Within factory area and locations that have dusty or corrosive processing, the MCC can be installed in climate controlled separated locations. Usually the MCC will be located 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 may be unplugged from the cabinet to be able to complete maintenance or testing, while really big controllers can 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 so as to provide short-circuit protection and a disconnecting switch in order to isolate the motor circuit. Separate connectors enable 3-phase power to be able to enter the controller. The motor is wired to terminals located within the controller. Motor control centers provide wire ways for field control and power cables.
Each motor controller in a motor control center could be specified with different options. These options consist of: extra control terminal blocks, control switches, pilot lamps, separate control transformers, and various types of bi-metal and solid-state overload protection relays. They likewise comprise various classes of types of power fuses and circuit breakers.
Concerning the delivery of motor control centers, there are a lot of options for the client. 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 customer to connect all field wiring.
MCC's commonly sit on floors that should have a fire-resistance rating. Fire stops could be necessary for cables which penetrate fire-rated floors and walls.
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