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Payback period of servo stabilizer is about 8-12 months after installation. This payback period is depending on input voltage variation and working hours of plant/office. Higher the input voltage, the payback period will be shorter.
Power Saving in 100 KW Supply
Total Connected Load (PI) is 100 KW
Assume that
Supply Volt (V1): 440 Volt.
Require Volt (V2): 400 Volt.
P2/P1 = V22/V12
P2 = P1 (V2/V1)2
P2 = 100(400/440)2
= 82.63
Saving in KW = 17 KW
Working hours average 12 hours a day for 360 day.
Total Unit Saved 73440 KWH.
Average cost per unit 3.50/KWH.
Total Amount Saved = 73440 x 6.50
= Rs. 4, 77,360 / Annum
Cost of 100 KVA units is nearly 1,40,000/-
So, payback period is one year.
Life of this equipment is 15 years.
Note: - Calculation is on base of unity P.F.
Power Saving and Reduction in Breakdown
| |
Single Phase |
Three Phase |
| Input Voltage |
170 V to 270 VAC |
300 V to 460 VAC |
| Below 380 V |
15 % Reduction In Breakdown |
No Power Saving But Stabilizer Can Install For Protection Of Sensitive Electronics & Electrical Equipment |
| 390 V |
95 % Reduction In Breakdown |
No Power Saving |
| 420 V |
95 % Reduction In Breakdown |
No Power Saving |
| 440 V |
95 % Reduction In Breakdown |
Approx. 7 % |
| 460 V |
95 % Reduction In Breakdown |
Approx. 9 % |
| 480 V |
95 % Reduction In Breakdown |
Approx. 12 % |
| Above 480 V |
15 % Reduction In Breakdown |
Above 12 % |
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