As the soaring heat in summer and ever rising EB bills we are seeking ways to minimize the cost by paying premium for the Inverter and 5* A/C's. How ever till the time I failed to realize a big parasitic load ever connected to our A/C. I am referring to our stabilizer. Recently we replaced old analogue meter to digital meter and it has host of functions. Something that has caught my mind (power consumption). We have the energy efficient Carrier Estrella which consumes less than 1000W for 1.0T and its running great for the past 7 years. Its still surprise everyone for the quick chilling and noiseless operation.
We run the AC occasionally in the winter. During the similar run we saw meter flashing 10+ Amps. Asked my dad is there any heavy load running apart from A/C and nothing was running except A/C was his reply. Quick calculation (Power = V (voltage) * I (current) ) shows excess of 2000Watts. I was shocked and felt it could be due to 7 years old AC but still cant digest 2300 Watts for 1.0T . Dad suggested to bypass stabilizer and connect directly to the mains. Initial start shows around 3.8Amp and we are relieved. At full load 18C after some 15 mins of running current stabilizes to 4+ amps. Turned off AC and connected via stabilizer and current jumped to 10+ Amps which means less than 50% efficient. The stabilizer we tested was Vguard VWR400 double booster.
Power Factor
Current consumption inline with Stabilizer
Stabilizer in usage
AC running without stabilizer
Quick calculation:
With stabilizer
I know AC power consumption is measured by multiplying power factor. Since I am not good in Electrical I shall leave it to pundits.
P=V*I (230*10.88= 2502 Watts)
Without Stabilizer
230*4.29= 987 Watts
Its really an eyeopener for me and TE reader how inefficient our AC stabilizers are . Stabilizer achieve 90+ efficiency close to its full load. 4KVA stabilizer is just 30% loaded. It could be that reason for highly inefficient in operation.
We run the AC occasionally in the winter. During the similar run we saw meter flashing 10+ Amps. Asked my dad is there any heavy load running apart from A/C and nothing was running except A/C was his reply. Quick calculation (Power = V (voltage) * I (current) ) shows excess of 2000Watts. I was shocked and felt it could be due to 7 years old AC but still cant digest 2300 Watts for 1.0T . Dad suggested to bypass stabilizer and connect directly to the mains. Initial start shows around 3.8Amp and we are relieved. At full load 18C after some 15 mins of running current stabilizes to 4+ amps. Turned off AC and connected via stabilizer and current jumped to 10+ Amps which means less than 50% efficient. The stabilizer we tested was Vguard VWR400 double booster.
Power Factor
Current consumption inline with Stabilizer
Stabilizer in usage
AC running without stabilizer
Quick calculation:
With stabilizer
I know AC power consumption is measured by multiplying power factor. Since I am not good in Electrical I shall leave it to pundits.
P=V*I (230*10.88= 2502 Watts)
Without Stabilizer
230*4.29= 987 Watts
Its really an eyeopener for me and TE reader how inefficient our AC stabilizers are . Stabilizer achieve 90+ efficiency close to its full load. 4KVA stabilizer is just 30% loaded. It could be that reason for highly inefficient in operation.
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