Forklift Drive Motor - Motor Control Centers or likewise called MCC's, are an assembly of one enclosed section or more, that have a common power bus mainly consisting of motor control units. They have been used ever since the 1950's by the automobile business, in view of the fact that they made use of many electric motors. These days, they are utilized in other industrial and commercial applications.
Motor control centers are a modern practice in factory assembly for some motor starters. This particular machinery can consist of variable frequency drives, programmable controllers and metering. The MCC's are commonly used in the electrical service entrance for a building. Motor control centers often are utilized for low voltage, 3-phase alternating current motors which range from 230 V to 600V. Medium voltage motor control centers are designed for large motors that vary from 2300V to 15000 V. These units utilize vacuum contractors for switching with separate compartments to be able to accomplish power switching and control.
Within factory area and locations which have dusty or corrosive processing, the MCC could be installed in climate controlled separated locations. Typically the MCC would be positioned on the factory floor close to the machinery it is controlling.
For plug-in mounting of individual motor controls, A motor control center has one or more vertical metal cabinet sections with power bus. In order to complete maintenance or testing, extremely large controllers could be bolted into place, while smaller controllers can be unplugged from the cabinet. Each and every motor controller consists of a contractor or a solid state motor controller, overload relays to protect the motor, circuit breaker or fuses to provide short-circuit protection and a disconnecting switch so as to isolate the motor circuit. Separate connectors allow 3-phase power to be able to enter the controller. The motor is wired to terminals positioned inside the controller. Motor control centers offer wire ways for power cables and field control.
In a motor control center, each and every motor controller could be specified with a lot of different choices. Some of the options include: extra control terminal blocks, control switches, pilot lamps, separate control transformers, and numerous kinds of solid-state and bi-metal overload protection relays. They also comprise various classes of types of power fuses and circuit breakers.
There are several choices concerning delivery of MCC's to the client. They can be delivered as an engineered assembly with interlocking wiring to a central control terminal panel board or programmable controller together with internal control. Conversely, they can 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 may be needed for cables which penetrate fire-rated floors and walls.
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