Question:
It starts operating when the pressure in the discharge line rises above a certain predetermined pressure.
It starts operating when the pressure in the discharge line rises above a certain predetermined pressure.
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H.P. cutout protects the system by stopping it when discharge pressure is too high.
Updated On: Jul 3, 2025
- L.P. cutout
- Relay
- Overload protector
- H.P. cutout
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The Correct Option is D
Solution and Explanation
The High Pressure (H.P.) cutout is a protective relay used in refrigeration and air conditioning systems.
It is designed to stop the compressor when the discharge pressure becomes too high, protecting the system.
When the pressure in the discharge line exceeds a safe limit, the H.P. cutout automatically opens the circuit.
This prevents damage to the compressor and other components caused by excessive pressure.
L.P. cutout works on low suction pressure, not discharge pressure.
A relay is a general switching device, and an overload protector responds to electrical overload, not pressure.
It is designed to stop the compressor when the discharge pressure becomes too high, protecting the system.
When the pressure in the discharge line exceeds a safe limit, the H.P. cutout automatically opens the circuit.
This prevents damage to the compressor and other components caused by excessive pressure.
L.P. cutout works on low suction pressure, not discharge pressure.
A relay is a general switching device, and an overload protector responds to electrical overload, not pressure.
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