PowerGUARDEnergy Saving for inductive loads

Saving 8%-15% Protection Power Quality

• Even after multiple measures have been applied to dave energy, the majority of installations still use electricity in an inefficient way

• Since motors and other inductive loads represent 70% to 80% of the total installed power, the quantity of energy losses is still high.

• The losses do not only affect the electricity bill, but also the cost of raw material, labor and production.

Electrical Losses within a site

• The electrical installations, unknowingly, suffer from energy losses du to harmonics, over-voltage, transiants, phase unbalance and incompatible impedance .

• The effects of magnetic waves in a site are generally underestimated as a source to save energy. In the world of electricity all sites are looked by the energy source as a circuit having an inductance in series with a resistance – therefore looking at the problem “magnetically” seams very logical. PowerGUARD treats the entire system by reducing the magnetic fields and

improving the power quality and the total consumption• PowerGUARD considers the site as a simple inductive load. PowerGUARD

reduces the impedance of the site and therefore improves the transport of energy and reduces consumption.

Total Solution

• The cause of low Power Factor is the presence of inductive reactance in the circuit. To improve the PF to 1.0, we can either add a capacitive reactance (Capacitor) or reduce the inductive reactance (PowerGUARD)

• A commun practice to improve the power factor ne pratique commune pis to add capacitors. This method reduces the quantity of reactive energy supplied by the source, but also can creates resonance in the circuit and increase the temperature of equipments and transformers by creating over-voltage situations

• Whereas PowerGUARD allows to produce savings that can be verified and at the same time increases the power factor and protects the equipments against surges of current and voltage.

Total Solution

PG Current generated in phase #1….

…is immediatly delivered to Phase #2….

…and to Phase #3, therefore neutralizing the Reactive current

How PowerGUARD works

By magnetic induction, a current is created and filtered to 60 HZ, this current is leading the voltage by more than 90 degrees, allowing it to flow to the opposite direction toward the source and neutralizing the reactive current

PowerGUARD benefits

• Voltage and current balancing• Dynamic Power Factor correction • Reduction of magnetic fields strength in the site• Converting the energie created by overvoltage events to useful

energy• Equipments protection against surges • Increases KVA capacity of Transformers• Reduces the monthly bill

Effect on the environment

PowerGUARD helps the environement. Every year, one 3-phase PowerGUARD operating @ 480 volts, can:• Reduce up to 35,000 kWh and save 14 barils of oil, • Avoid the emission of 9 tonnes of CO2 and • Reduce the consumption of 800,000 liters of filtered water .

PowerGUARD vs Capacitors

PowerGUARD

Reduces the Inductive Reactance

Capacitors

Add to the Capacitive Reactance

Benefits Dynamically improves the PF in the site Reduces Joules losses in the whole site Reduces KW demand Reduces KWh consumption Improves Voltage at the load Reduces temperature of the equipments Protection against Lightning and Transiants Life expectancy more than 20 years Guaranteed 3 years

Improve PF @ the mains

Improves PF of linear load YES YES

Improve non-linear loads PF YES NO

Preferred installation loocation

In parallel to sub-panels or important loads Mains panel

Possibility of motors self-excitation

NO YES- Over correction

Over voltage during low load

NO YES

Voltage Regulation Improves voltage unbalance of 3 phases Risk of harmonic resonance may destroy

equipments

Reduces KWh YES NO – only through line losses reduction

General Diagram

Conclusion

• PowerGUARD allows:• Protection of equipments against surges and lightning;• Power Conditioning, Dynamic Power Factor Correction, Noise and RF

reduction • Reduction of line currents• Reduction of KW demand• Voltage balancing of the 3 phases• Improves equipment efficiency such as Computers, VFDs , PLCs and Electronic

ballasts;• Reduction of 8% à 15% of the monthly bill• Reduction of maintenance costs• Payback between 12 and 30 months.• The PowerGUARD units require no maintenance, guaranteed 3 years and a life

expectancy of more than 20 years.• Models are for domestic, commercial and industriel applications• PowerGUARD is the only technology that offers all theses functions at the

same time in the same product

Specifications

Specifications PowerGUARD IND 3 Phase Delta

Power Dissipation 1250 Joules/min

Peak Pulse Current 35 000 Amps

Max Surge Current (8 x 20 µsec) – 20 000 Amps

Nominal Clamping Voltage 550 V RMS

Max Steady State Voltage 1500 V

Response Time 5 nanoseconds

Total Capacitance 255 µF

KVAR 21

Warranty 3 years

Dissipation Factor 0.1% MaxStand by Power 20 Watts

Operating Temp. -40 C To +70 C

Estimated Saving (Inductive loads) 2.0 /3.0 KW

Blower Building MCC

Power Factor - 3Ø ([PF]) Real Power - 3Ø (W)

7: 56: 30 AM7: 56: 00 AM7: 55: 30 AM7: 55: 00 AM7: 54: 30 AM7: 54: 00 AM7: 53: 30 AM

490, 000

485, 000

480, 000

475, 000

470, 000

465, 000

460, 000

455, 000

450, 000

445, 000

440, 000

435, 000

430, 000

425, 000

420, 000

W

0. 9980. 9960. 9940. 9920. 990. 9880. 9860. 9840. 9820. 980. 9780. 9760. 9740. 9720. 970. 9680. 9660. 9640. 9620. 960. 9580. 956

[ PF]

Case Study

PG OFF PG ON

reduction 12,2 KW

PF increases from 0,96 to 0,99Immediate reduction of 12,2 KW

OFF ON

Case Study

The Graph shows the fluctuation in voltage due to the VFDs presence in the circuitWhen PowerGUARD is activated, there is an increase in voltage and a reduction in the deviation between the 3 phases.

Case Study

kW Demand/Power Factor

Wesper ChillerStart: 1/30/2013 11:57:08 AM End: 1/30/2013 12:27:49 PM

Power Factor - 3Ø ([PF]) Real Power - 3Ø (W)

12: 20: 00 PM12: 10: 00 PM12: 00: 00 PM

240, 000

220, 000

200, 000

180, 000

160, 000

140, 000

120, 000

100, 000

80, 000

60, 000

40, 000

20, 000

0

W0. 950. 90. 850. 80. 750. 70. 650. 60. 550. 50. 450. 40. 350. 30. 250. 20. 150. 10. 050

[ PF]

OFF ONON

The Grapg shows that when the PG are ON, there is an increase in PF and KW decrease of an average of 7.5 KW. 3 PG units are intalled in paralled to a 300 KW electric Chiller

ONOFF