Forklift Drive Motor - MCC's or otherwise known as Motor Control Centersare an assembly of one section or more that include a common power bus. These have been utilized in the auto trade ever since the 1950's, in view of the fact that they were made use of many electric motors. Today, they are used in different commercial and industrial applications.
Inside factory assembly for motor starter; motor control centers are somewhat common practice. The MCC's comprise metering, variable frequency drives and programmable controllers. The MCC's are usually used in the electrical service entrance for a building. Motor control centers often are used for low voltage, 3-phase alternating current motors which range from 230 V to 600V. Medium voltage motor control centers are intended for large motors that vary from 2300 volts to 15000 volts. These units make use of vacuum contractors for switching with separate compartments in order to attain power control and switching.
In places where really dusty or corrosive methods are occurring, the motor control center may be established in a separate air-conditioned room. Typically the MCC will be situated on the factory floor near 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 could be unplugged from the cabinet so as to complete maintenance or testing, while extremely big controllers can be bolted in place. Every motor controller consists of a contractor or a solid state motor controller, overload relays so as to protect the motor, fuses or circuit breakers to provide short-circuit protection and 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 positioned within the controller. Motor control centers offer wire ways for power cables and field control.
Inside a motor control center, every motor controller can be specified with several different alternatives. Some of the options consist of: pilot lamps, separate control transformers, extra control terminal blocks, control switches, and numerous types of solid-state and bi-metal overload protection relays. They even comprise 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 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 client to connect all field wiring.
MCC's usually sit on floors that should have a fire-resistance rating. Fire stops may be needed for cables which go through fire-rated floors and walls.
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