Forklift Drive Motor - MCC's or Motor Control Centersare an assembly of one section or more which include a common power bus. These have been used in the auto trade ever since the 1950's, in view of the fact that they were utilized a lot of electric motors. Today, they are used in various commercial and industrial applications.
Within factory assembly for motor starter; motor control centers are fairly common technique. The MCC's consist of metering, variable frequency drives and programmable controllers. The MCC's are usually seen in the electrical service entrance for a building. Motor control centers frequently are used for low voltage, 3-phase alternating current motors that vary from 230 V to 600V. 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 achieve power control and switching.
Within factory area and locations which have corrosive or dusty processing, the MCC can be installed in climate controlled separated locations. Normally the MCC would be positioned on the factory floor adjacent to the machines it is controlling.
A MCC has one or more vertical metal cabinet sections with power bus and provisions for plug-in mounting of individual motor controllers. Smaller controllers could be unplugged from the cabinet so as to complete testing or maintenance, whereas really large controllers can be bolted in place. Every motor controller consists of a solid state motor controller or a contractor, 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 enable 3-phase power so as to enter the controller. The motor is wired to terminals situated in the controller. Motor control centers provide wire ways for field control and power cables.
Each and every motor controller inside a motor control center could be specified with several options. These alternatives include: control switches, pilot lamps, separate control transformers, extra control terminal blocks, as well as various types of solid-state and bi-metal overload protection relays. They likewise comprise various classes of types of power fuses and circuit breakers.
There are several choices concerning delivery of MCC's to the client. They could be delivered as an engineered assembly with interlocking wiring to a central control terminal panel board or programmable controller together with internal control. On the other hand, they could be provided prepared 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 can be needed for cables which penetrate fire-rated floors and walls.
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