Case studyon

Energy-Saver Modulefor lightings

byPG Phang

(Asia Technical support Manager)

Power Quality Inc/Power Quality Thailand/MMPQ Venture

PQSynergy-September 2010

1All rights reserved by Power Quality Incwww.powerquality.orgwww.powerqaulityinc.com.my

ENERGY SAVING Devices

• Ever since Energy crisis started, it created opportunity for many company trying to produce energy-saving magic boxes.

• Most attempt to sell their magic boxes with PQ slogan (built-in TVSS & PF Caps)

• Tend to Guaranty 5 to 30% saving in cost.• ……………..• Will the magic box saves energy? Yes & No…

• Improved power factor• Reduced harmonics• Improved voltage imbalance• Reduced electrical current levels• Cooler device operation• Prolonged motor and other device life• Improved voltage level (higher or lower)• Quick payback• Improved energy efficiency• Claimed to save 10%, 20%, or even 30% energy cost reductions

are common

Common Claims for Energy Saver

Case Study.• Building owner had prior test on some 5 different

brands of Energy Saver Devices and was convinced on savings

• Management need justification, data, documentation & require 3rd party evaluation on energy-monitoring.

All rights reserved by Power Quality Incwww.powerquality.orgwww.powerqaulityinc.com.my

Method & connections- Each “Energy Saver Module” was wired in between to

Fluorescent Lamps load – 3 Phase of 14 units per phase of 36 watts lamp (brand new units)

- Common Mains supply source to all (3x ESM) test- Power Monitoring with Energy Saver Module Installed- Power Monitoring without Energy Saver Module were

done separately but using the same sets of Lamps Load

Fluorescent lamps (3phase x 14)

Energy Saver Module

Energy Monitor

Measurements(24 hrs period)

• Kilowatt Hour (Kwh)• Kilowatt• Power Factor • KVA• KVAR• Harmonics (VTHD & ITHD)• Voltage and Ampere 24hrs trending • Brightness test *8/22/2009 WWW.powerquality.org All rights reserved by Power Quality Inc

Resultsfor ESM-A

Event #1 at 23/06/2010 15:00:23.000BIrms Current Journal Trigger Normal To High

Timeplot

12:0022/06/2010

Tuesday

18:00 00:0023/06/2010Wednesday

06:00 12:00 18:00 00:0024/06/2010Thursday

06:00 12:00

0

5

10

15

20

25

30

35

kWh

TOT Pintg Energy(kWh)

1d - 03:00:00

5.34

26 k

Wh

Dran-View 6.9.01 HASP : 2024276861 (78A8037Dh)5.34 kwh

Resultsfor ESM-B

Event #1 at 23/06/2010 15:10:00.000Trend

Timeplot

12:0022/06/2010

Tuesday

18:00 00:0023/06/2010Wednesday

06:00 12:00 18:00 00:0024/06/2010Thursday

06:00 12:00

0

5

10

15

20

25

30

35

kWh

TOT Pintg Energy(kWh)

1d - 03:00:00

4.44

31 k

Wh

Dran-View 6.9.01 HASP : 2024276861 (78A8037Dh) 4.44 kwh

Resultsfor ESM-C

Event #1 at 23/06/2010 08:18:00.800Waveforms

Timeplot

12:0022/06/2010

Tuesday

18:00 00:0023/06/2010Wednesday

06:00 12:00 18:00 00:0024/06/2010Thursday

06:00 12:00

0

5

10

15

20

25

30

35

kWh

TOT Pintg Energy(kWh)

1d - 03:00:00

8.34

4 kW

h

Dran-View 6.9.01 HASP : 2024276861 (78A8037Dh)8.34 Kwh

Conclusions

• Yes, It does save (sometimes snake-oil works)

• Degree of savings varies even on the same technology type with the same 37kwh load. Result:-- ESM #A saved 5.34 Kwh ( 14 %)- ESM #B saved 4.44 Kwh ( 12 %)- ESM #C saved 8.34 Kwh ( 22 %)

8/22/2009 WWW.powerquality.org All rights reserved by Power Quality Inc

Thank You &

Q&A

Sept 2010WWW.powerquality.org All rights reserved by Power Quality Inc