Forklift Drive Motor - Motor Control Centers or MCC's, are an assembly of one or more enclosed sections, which have a common power bus principally containing motor control units. They have been utilized since the 1950's by the automobile business, as they made use of many electric motors. Nowadays, they are utilized in other commercial and industrial applications.
Motor control centers are a modern technique in factory assembly for some motor starters. This equipment can comprise programmable controllers, metering and variable frequency drives. The MCC's are normally utilized in the electrical service entrance for a building. Motor control centers often are utilized for low voltage, 3-phase alternating current motors that range from 230 V to 600V. Medium voltage motor control centers are intended for big motors that range from 2300V to 15000 V. These units make use of vacuum contractors for switching with separate compartments to be able to achieve power switching and control.
Inside factory locations and area that have corrosive or dusty processing, the MCC could be installed in climate controlled separated locations. Normally the MCC will be positioned on the factory floor close to the machinery 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 may be unplugged from the cabinet to be able to complete maintenance or testing, while really big controllers can be bolted in place. Each and every motor controller consists of a solid state motor controller or a contractor, overload relays In order to protect the motor, circuit breaker or fuses so as to provide short-circuit protection as well as a disconnecting switch in order to isolate the motor circuit. Separate connectors allow 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.
Every motor controller within a motor control center can be specified with a range of options. These alternatives include: extra control terminal blocks, control switches, pilot lamps, separate control transformers, and various kinds of solid-state and bi-metal overload protection relays. They likewise have different classes of kinds of circuit breakers and power fuses.
There are various options regarding delivery of MCC's to the client. They can be delivered as an engineered assembly with interlocking wiring to a central control terminal panel board or programmable controller along with internal control. Conversely, they can be supplied set for the customer to connect all field wiring.
Motor control centers usually sit on the floor and should have a fire-resistance rating. Fire stops can be required for cables that go through fire-rated walls and floors.
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