Forklift Drive Motor - Motor Control Centers or MCC's, are an assembly of one or more enclosed sections, which have a common power bus principally comprising motor control units. They have been used since the 1950's by the vehicle business, for the reason that they utilized lots of electric motors. These days, they are used in different industrial and commercial applications.
Motor control centers are a modern practice in factory assembly for several motor starters. This particular equipment can consist of programmable controllers, metering and variable frequency drives. The MCC's are usually used 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 made for big motors which vary from 2300V to 15000 V. These units make use of vacuum contractors for switching with separate compartments in order to attain power switching and control.
Within factory area and locations which have dusty or corrosive processing, the MCC can be installed in climate controlled separated locations. Normally the MCC will be positioned 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 may be unplugged from the cabinet so as to complete testing or maintenance, whereas extremely big controllers can be bolted in place. Each motor controller has a solid state motor controller or a contractor, overload relays to protect the motor, circuit breaker or fuses to be able to supply short-circuit protection as well as a disconnecting switch so as 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 offer wire ways for power cables and field control.
Inside a motor control center, every motor controller could be specified with numerous various options. Some of the options include: pilot lamps, separate control transformers, extra control terminal blocks, control switches, and numerous types of bi-metal and solid-state overload protection relays. They even have various classes of types of circuit breakers and power fuses.
Regarding the delivery of motor control centers, there are a lot of options for the client. 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 client to connect all field wiring.
Motor control centers typically sit on the floor and should have a fire-resistance rating. Fire stops can be needed for cables which penetrate fire-rated walls and floors.
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