Forklift Drive Motors - Motor Control Centers or MCC's, are an assembly of one or more enclosed sections, that have a common power bus mainly containing motor control units. They have been utilized ever since the 1950's by the auto trade, in view of the fact that they utilized many electric motors. Today, they are used in various industrial and commercial applications.
Inside factory assembly for motor starter; motor control centers are somewhat common method. The MCC's consist of variable frequency drives, programmable controllers and metering. The MCC's are normally utilized in the electrical service entrance for a building. Motor control centers commonly are utilized for low voltage, 3-phase alternating current motors which range from 230 volts to 600 volts. Medium voltage motor control centers are made for large motors which vary from 2300 volts to 15000 volts. These units utilize vacuum contractors for switching with separate compartments so as to attain power control and switching.
Inside factory area and locations that have corrosive or dusty processing, the MCC can be installed in climate controlled separated locations. Normally the MCC would be situated on the factory floor next to the machines 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. To be able to complete testing or maintenance, really big controllers could be bolted into place, while smaller controllers can be unplugged from the cabinet. Every motor controller has a contractor or a solid state motor controller, overload relays to protect the motor, circuit breaker or fuses in order to supply short-circuit protection and a disconnecting switch in order to isolate the motor circuit. Separate connectors allow 3-phase power to enter the controller. The motor is wired to terminals positioned inside the controller. Motor control centers provide wire ways for field control and power cables.
Inside a motor control center, each and every motor controller could be specified with many different options. Some of the alternatives include: pilot lamps, separate control transformers, extra control terminal blocks, control switches, and various types of solid-state and bi-metal overload protection relays. They likewise comprise different classes of kinds of circuit breakers and power fuses.
There are various 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 along with internal control. Conversely, they can be provided set for the customer to connect all field wiring.
Motor control centers normally sit on the floor and should have a fire-resistance rating. Fire stops could be necessary for cables that penetrate fire-rated walls and floors.
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