Forklift Drive Motor - Motor Control Centers or 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 vehicle business, as they made use of a large number of electric motors. These days, they are utilized in other commercial and industrial applications.
Motor control centers are a modern method in factory assembly for some motor starters. This machine could include variable frequency drives, programmable controllers and metering. The MCC's are usually seen in the electrical service entrance for a building. Motor control centers commonly are utilized for low voltage, 3-phase alternating current motors which vary from 230 volts to 600 volts. Medium voltage motor control centers are designed for big motors which range from 2300 volts to 15000 volts. These units utilize vacuum contractors for switching with separate compartments to be able to attain power control and switching.
Inside factory area and locations which 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 adjacent 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 testing or maintenance, extremely large controllers can be bolted into place, whereas smaller controllers may be unplugged from the cabinet. Each and every motor controller consists of a solid state motor controller or a contractor, overload relays to protect the motor, circuit breaker or fuses to provide short-circuit protection as well as a disconnecting switch so as to isolate the motor circuit. Separate connectors allow 3-phase power 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, each and every motor controller could be specified with many different alternatives. Some of the alternatives comprise: pilot lamps, separate control transformers, extra control terminal blocks, control switches, and numerous types of solid-state and bi-metal overload protection relays. They even have different classes of types of circuit breakers and power fuses.
Concerning the delivery of motor control centers, there are lots of choices for the customer. 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 could be necessary for cables that go through fire-rated walls and floors.
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