Forklift Drive Motor - Motor Control Centers or otherwise called MCC's, are an assembly of one or more enclosed sections, which have a common power bus mostly containing motor control units. They have been used since the 1950's by the automobile business, as they utilized a lot of electric motors. Now, they are used in different commercial and industrial applications.
Inside factory assembly for motor starter; motor control centers are fairly common practice. The MCC's consist of programmable controllers, metering and variable frequency drives. The MCC's are usually utilized in the electrical service entrance for a building. Motor control centers often are used for low voltage, 3-phase alternating current motors that range from 230 volts to 600 volts. Medium voltage motor control centers are intended for large motors that range from 2300V to 15000 V. These units make use of vacuum contractors for switching with separate compartments in order to accomplish power switching and control.
In factory area and locations which have dusty or corrosive processing, the MCC can be installed in climate controlled separated locations. Typically the MCC would be positioned on the factory floor near the equipment 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 maintenance or testing, very large controllers can be bolted into place, whereas 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 as well as a disconnecting switch in order to isolate the motor circuit. Separate connectors enable 3-phase power in order to enter the controller. The motor is wired to terminals located inside the controller. Motor control centers provide wire ways for field control and power cables.
Each motor controller in a motor control center could be specified with a range of alternatives. These options consist of: separate control transformers, extra control terminal blocks, control switches, pilot lamps, and various types of bi-metal and solid-state overload protection relays. They likewise have different classes of types of power fuses and circuit breakers.
Regarding the delivery of motor control centers, there are a lot of options for the customer. 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 set for the customer to connect all field wiring.
Motor control centers typically sit on the floor and should have a fire-resistance rating. Fire stops can be needed for cables that penetrate fire-rated floors and walls.
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