Refrigerator Relay and OLP checking, റിലേയും OLP യും ചെക്ക്‌ ചെയ്യുന്ന വിധം

Checking of relay and OLP in refrigerator, deep freezer, water cooler, visible cooler using digital clamp meter


Relay is an Electronic component which helps compressor of your Refrigerator to start. A faulty Relay can damage a Compressor or can also cause a Short circuit in Wiring.

PTC stands for Positive Temperature Coefficient. This refers to the Alloy chip inside the relay whose resistance increases as its temperature rises. When the compressor first starts up, the resistance of the PTC's chip is very low and it lets current flow into the start winding of the compressor. As the current flows thru the PTC, it heats it up and also raises its resistance to the point that the start winding is effectively taken out of the circuit, which is what you want to happen as soon as the compressor gets going.



Refrigerator Overload Protector attaches to the compressor and shuts off the compressor if the compressor motor draws too much current. Low profile and light weight, highly reliable performance.



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