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 mostly comprising motor control units. They have been utilized since the 1950's by the auto industry, as they used many electric motors. These days, they are utilized in a variety of commercial and industrial applications.
Within factory assembly for motor starter; motor control centers are fairly common practice. The MCC's comprise variable frequency drives, programmable controllers and metering. The MCC's are normally utilized in the electrical service entrance for a building. Motor control centers frequently are utilized for low voltage, 3-phase alternating current motors that range from 230 V to 600V. Medium voltage motor control centers are designed for big motors that vary from 2300 volts to 15000 volts. These units make use of vacuum contractors for switching with separate compartments in order to achieve power control and switching.
In factory locations and area that have corrosive or dusty processing, the MCC can be installed in climate controlled separated locations. Typically the MCC will be located 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. So as to complete testing or maintenance, extremely large controllers could be bolted into place, whereas smaller controllers may be unplugged from the cabinet. Every motor controller has a contractor or a solid state motor controller, overload relays to protect the motor, fuses or circuit breakers to supply short-circuit protection and a disconnecting switch in order to isolate the motor circuit. Separate connectors enable 3-phase power to enter the controller. The motor is wired to terminals located in the controller. Motor control centers supply wire ways for field control and power cables.
Within a motor control center, each motor controller can be specified with a lot of different choices. Some of the choices include: extra control terminal blocks, control switches, pilot lamps, separate control transformers, and numerous kinds of bi-metal and solid-state overload protection relays. They even comprise different classes of kinds of circuit breakers and power fuses.
Concerning the delivery of motor control centers, there are lots of choices for the consumer. These could be delivered as an engineered assembly with a programmable controller along with internal control or with interlocking wiring to a central control terminal panel board. Conversely, they could be provided ready for the customer to connect all field wiring.
Motor control centers typically sit on the floor and must have a fire-resistance rating. Fire stops could be needed for cables that go through fire-rated floors and walls.
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