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8/10/2019 Components of Control Panel
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What is a control panel? What are the components in
a control panel?
CONTROL PANELControl panel is a cabinet which contains electrical
components to control the motors and equipments.
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CABLESCables are used for the interconnection. Two types ofcables are used. Power cable and control cable.1. Power cables (which is used to connect the motor to
panel component and panel to main supply)2. Control cables (which is used to connect the controlcircuits)
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BUS BARIncoming supply is connected to bus bar and distributedfrom bus bar. It is normally made by Aluminum.
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MCB (Miniature Circuit Breakers)MCB is a protecting device. It is used before the feeder. Thisshould be selected according to the capacity of the feeder
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MCCB (Mould Case Circuit Breaker)In most of the cases the MCCB used as an incomer forhigher capacity feeders for better protection
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ELCB (Earth Leakage Circuit Breaker)The ELCB is also known as RCCB. The device used for theprotection against the earth leakage current and residualcurrent. It should be fixed before the incomer
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INCOMERThe basic supply will connected to this incomer. It alsocalled as SFU(Switch Fuse Unit). It contains one handle withfuse unit. Once it is turned ON the supply will pass to the
next stage through fuse if any major fault occurs in sidepanel board, it will trip and it isolate supply.
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SELECTOR SWITCHSelector is switch is used for ON/OFF purpose and forselecting the mode of operation like auto/manual.
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Starters are used for starting the motors safely. Mainly twotypes of starters are there. DOL starters and Start to delta.Dol starter is enough for the motors with power less than 10
hp.
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OVER LOAD RELAYOver load relay is for the protection of motor from the overload. It senses the load current and trips if it exceeds thelimit. Current limit has to be set manually. It should be 80%
of thefull load current.
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TIMER
Operation of timer is similar to relay. But a delay is there for
actuation. We can set the time delay manually according toour requirement. It is very much essential for start to delta
conversion.
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CONTACTORContactor is an essential component in the control panel. Itactuates when the signal from the controller (PLC, Relaylogic) comes. It is similar to relay. It is costlier than relay. It
is used for a higher load.
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Panel omponents
Relays
Stack Lights
Cables
Wireway
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Circuit Breaker
Din Rail
Installation Products
Marking Equipment
Motor Contactors
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Motor Overloads
Mounting Material
Pilot Lights
Pluggable Connection Solutions
Power Conditioners
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Power Supplies
Push Buttons
Signal Towers
Switches
Terminal Blocks
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