A sudden decrease in voltage to 40-60 V when the compressor of your air conditioner starts, causing the AC to stop, indicates a significant voltage drop or an issue with the stabilizer you are using. Here are a few possible explanations for this problem:
Inadequate Stabilizer Capacity: The stabilizer you mentioned has an input capacity of 90-300 VA (volt-ampere). VA is a unit that represents the apparent power, which is the combination of both real power (watts) and reactive power (volt-amps reactive). Air conditioners, especially when the compressor starts, can have high starting currents, which require a stabilizer with a sufficient capacity to handle the initial surge. It's possible that the stabilizer you are using is not adequately sized to handle the power requirements of your air conditioner, resulting in voltage drops.
Stabilizer Malfunction: There could be a malfunction in the stabilizer itself. Stabilizers are designed to regulate and maintain a stable voltage output regardless of fluctuations in the input voltage. If the stabilizer is faulty or damaged, it may not be able to provide the necessary voltage regulation, causing a sudden drop when the compressor starts.
Wiring or Connection Issues: It's also worth considering if there are any wiring or connection issues between the stabilizer, the air conditioner, and the power source. Loose or faulty connections can disrupt the flow of electricity, leading to voltage drops when there is a sudden surge in power demand.
To address this issue, you can take the following steps:
Verify the stabilizer's capacity: Ensure that the stabilizer's capacity is suitable for the power requirements of your air conditioner. If it is not, you may need to consider upgrading to a stabilizer with a higher capacity.
Have the stabilizer checked: If the stabilizer is malfunctioning, it might require repair or replacement. Consult a professional electrician or technician to inspect and diagnose the stabilizer for any issues.
Check the wiring and connections: Ensure all connections between the stabilizer, air conditioner, and power source are secure and in good condition. If you notice any loose or damaged wiring, have it repaired by a qualified electrician.
Consider professional assistance: If the issue persists or if you are uncertain about handling electrical components, it's best to seek assistance from a professional electrician who can diagnose and resolve the problem safely.
Remember, dealing with electrical components can be dangerous, so it's important to prioritize safety and consult experts when necessary.