Forklift Drive Motor - Motor Control Centers or otherwise called MCC's, are an assembly of one enclosed section or more, which have a common power bus principally comprising motor control units. They have been utilized ever since the 1950's by the auto industry, as they made use of lots of electric motors. Today, they are utilized in different commercial and industrial applications.
Motor control centers are a modern practice in factory assembly for several motor starters. This particular machinery can comprise metering, variable frequency drives and programmable controllers. The MCC's are usually utilized in the electrical service entrance for a building. Motor control centers frequently are used for low voltage, 3-phase alternating current motors which vary from 230 V to 600V. Medium voltage motor control centers are made for large motors that range from 2300V to 15000 V. These units use vacuum contractors for switching with separate compartments so as to accomplish power control and switching.
Within factory area and locations which have dusty or corrosive processing, the MCC could be installed in climate controlled separated locations. Typically the MCC will be situated on the factory floor close to the machines it is controlling.
A MCC has one or more vertical metallic cabinet sections with power bus and provisions for plug-in mounting of individual motor controllers. Smaller controllers can be unplugged from the cabinet to complete maintenance or testing, whereas extremely big controllers could be bolted in place. Each motor controller consists of a solid state motor controller or a contractor, overload relays In order to protect the motor, fuses or circuit breakers to supply short-circuit protection and a disconnecting switch so as to isolate the motor circuit. Separate connectors allow 3-phase power to be able to enter the controller. The motor is wired to terminals situated within the controller. Motor control centers offer wire ways for power cables and field control.
Each motor controller within a motor control center could be specified with a range of choices. These choices comprise: pilot lamps, separate control transformers, extra control terminal blocks, control switches, as well as various kinds of solid-state and bi-metal overload protection relays. They likewise have various classes of types of circuit breakers and power fuses.
Regarding the delivery of motor control centers, there are numerous options for the customer. These can 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. On the other hand, they could be supplied set for the customer to connect all field wiring.
MCC's usually sit on floors which are required to have a fire-resistance rating. Fire stops could be necessary for cables that go through fire-rated walls and floors.
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