Forklift Drive Motor - MCC's or Motor Control Centersare an assembly of one or more sections that include a common power bus. These have been utilized in the vehicle trade since the 1950's, for the reason that they were utilized lots of electric motors. Today, they are used in various commercial and industrial applications.
Motor control centers are a modern technique in factory assembly for some motor starters. This particular equipment can include variable frequency drives, programmable controllers and metering. The MCC's are usually used in the electrical service entrance for a building. Motor control centers often are utilized for low voltage, 3-phase alternating current motors which range from 230 volts to 600 volts. Medium voltage motor control centers are designed for large motors that range from 2300V to 15000 V. These units make use of vacuum contractors for switching with separate compartments so as to achieve power switching and control.
In areas where really corrosive or dusty processes are taking place, the motor control center may be established in a separate air-conditioned room. Normally the MCC will be positioned 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. To be able 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 contractor or a solid state motor controller, overload relays to protect the motor, circuit breaker or fuses to supply short-circuit protection and 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 situated in the controller. Motor control centers supply wire ways for field control and power cables.
In a motor control center, each motor controller could be specified with many various options. Some of the choices comprise: pilot lamps, separate control transformers, extra control terminal blocks, control switches, and various kinds of bi-metal and solid-state overload protection relays. They likewise have different classes of types of power fuses and circuit breakers.
Concerning the delivery of motor control centers, there are lots of choices 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 can be provided ready for the customer to connect all field wiring.
Motor control centers normally sit on the floor and must have a fire-resistance rating. Fire stops could be necessary for cables that penetrate fire-rated floors and walls.
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