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 comprising motor control units. They have been used ever since the 1950's by the vehicle industry, in view of the fact that they used lots of electric motors. Today, they are utilized in various industrial and commercial applications.
Motor control centers are a modern method in factory assembly for some motor starters. This particular machine could consist of metering, variable frequency drives and programmable controllers. The MCC's are commonly seen in the electrical service entrance for a building. Motor control centers often 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 vary from 2300 volts to 15000 volts. These units utilize vacuum contractors for switching with separate compartments so as to achieve power control and switching.
Within factory area and locations which have dusty or corrosive processing, the MCC could be installed in climate controlled separated locations. Normally the MCC would be positioned on the factory floor adjacent 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 could be unplugged from the cabinet to complete maintenance or testing, whereas extremely large controllers can be bolted in place. Each motor controller consists of 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 and a disconnecting switch in order to isolate the motor circuit. Separate connectors allow 3-phase power in order to enter the controller. The motor is wired to terminals positioned in the controller. Motor control centers supply wire ways for power cables and field control.
Each and every motor controller within a motor control center can be specified with various alternatives. These choices include: separate control transformers, extra control terminal blocks, control switches, pilot lamps, and various types of solid-state and bi-metal overload protection relays. They even have various classes of kinds of circuit breakers and power fuses.
Concerning the delivery of motor control centers, there are numerous choices for the consumer. 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 could be provided prepared for the client to connect all field wiring.
MCC's commonly sit on floors which should have a fire-resistance rating. Fire stops can be required for cables which penetrate fire-rated floors and walls.
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