Primary & Secondary Protection In a power System:
This diagram shows how to connect If the 1st Protection Operation Falls into bother, Then the 2nd Protection Disconnects the Faulty Half from the System. Moreover, Once we disconnect Primary protection for testing or Maintenance Functions, then secondary or backup Protection can act as primary protection. So you can wire your house or office like this diagram very easily. If you want to learn how to connect this circuit clearly you can follow our youtube video link below.
Diagram of Primary & Secondary Protection In a power System:
Components Need for this Project:
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Components used to make the Primary & Secondary Protection:
01. SP MCB
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| Fig 2:Â SP MCB |
MCB SP means single pole it protects only one phase switching. MCB (Miniature Circuit Breaker) Curswitch is the most basic general-purpose switch that you use to control a light or another device from one location. These Switches Have Two Brass-Colored Screw Terminals Connected to the hot Power Source Wires. (MCB) For any Distribution Board, the Protection System Must be Used in The Incomer. Phase and Neutral Single Phase Supply to break. 120-volt circuits, 15-20 amp single pole breaker is typically used.
02. Overload Relay
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| Fig 3:Â Overload Relay |
Overload relays are often used to protect the motor from excessive current flow. Overload relays are used to protect the motor from overheating. Besides some specific faults such as phase to phase, phase to ground, etc. overload relay provides protection to the motor. A thermal overload relay works on the principle of bimetallic strip electro-thermal characteristics. When the bimetallic heats up, the trip function in the overload relay turns on and disconnects the power supply to the contactor coil, thus tripping the overload relay and breaking the motor current and saving the motor.
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