Forklift Drive Motor - MCC's or also known as Motor Control Centersare an assembly of one or more sections that contain a common power bus. These have been used in the auto business since the 1950's, for the reason that they were made use of lots of electric motors. These days, they are used in various commercial and industrial applications.
In factory assembly for motor starter; motor control centers are quite common method. The MCC's include metering, variable frequency drives and programmable controllers. The MCC's are commonly found in the electrical service entrance for a building. Motor control centers frequently are used for low voltage, 3-phase alternating current motors that range from 230 volts to 600 volts. Medium voltage motor control centers are intended for large motors that vary from 2300 volts to 15000 volts. These units utilize vacuum contractors for switching with separate compartments in order to achieve power switching and control.
In factory area and locations which have dusty or corrosive processing, the MCC could be installed in climate controlled separated locations. Usually the MCC will be situated on the factory floor near the machines 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. So as to complete maintenance or testing, really big controllers can be bolted into place, whereas smaller controllers may be unplugged from the cabinet. Each motor controller consists of a solid state motor controller or a contractor, overload relays to protect the motor, fuses or circuit breakers to supply short-circuit protection as well as a disconnecting switch to be able to isolate the motor circuit. Separate connectors allow 3-phase power to enter the controller. The motor is wired to terminals situated in the controller. Motor control centers offer wire ways for power cables and field control.
Inside a motor control center, each and every motor controller can be specified with numerous various choices. Some of the choices include: extra control terminal blocks, control switches, pilot lamps, separate control transformers, and many kinds of bi-metal and solid-state overload protection relays. They even have various classes of kinds of power fuses and circuit breakers.
Regarding the delivery of motor control centers, there are various choices for the consumer. 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 can be provided set for the client to connect all field wiring.
Motor control centers normally sit on the floor and must have a fire-resistance rating. Fire stops may be necessary for cables which go through fire-rated walls and floors.
Click to Download the pdf