Forklift Drive Motor - Motor Control Centers or otherwise called MCC's, are an assembly of one enclosed section or more, that have a common power bus mainly containing motor control units. They have been used ever since the 1950's by the automobile trade, in view of the fact that they utilized a large number of 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 somewhat common technique. The MCC's include programmable controllers, metering and variable frequency drives. The MCC's are commonly found in the electrical service entrance for a building. Motor control centers frequently are utilized for low voltage, 3-phase alternating current motors that vary from 230 V to 600V. Medium voltage motor control centers are made for big motors which vary from 2300V to 15000 V. These units utilize vacuum contractors for switching with separate compartments so as to achieve 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 located on the factory floor close 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 complete maintenance or testing, very big controllers could be bolted into place, while smaller controllers could be unplugged from the cabinet. Every motor controller consists of a solid state motor controller or a contractor, overload relays so as to protect the motor, fuses or circuit breakers to provide short-circuit protection as well as a disconnecting switch in order to isolate the motor circuit. Separate connectors allow 3-phase power to be able 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.
Each motor controller in a motor control center could be specified with several alternatives. These options consist of: control switches, pilot lamps, separate control transformers, extra control terminal blocks, and many kinds of bi-metal and solid-state overload protection relays. They also have various classes of kinds of power fuses and circuit breakers.
There are a lot of options regarding delivery of MCC's to the customer. 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 can be supplied prepared for the client to connect all field wiring.
MCC's commonly sit on floors which should have a fire-resistance rating. Fire stops could be needed for cables which go through fire-rated floors and walls.
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