PowerGUARD
Energy Saving for inductive loads
Saving 8%-15%
Protection
Power Quality
Electrical Losses within a site
• 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.
Total Solution
• 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.
How PowerGUARD works
PG Current generated
in phase #1….
…is immediatly
delivered to Phase
#2….
…and to Phase #3,
therefore
neutralizing the
Reactive current
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
Benefits









PowerGUARD
Capacitors
Reduces the Inductive Reactance
Add to the Capacitive
Reactance
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
Improve non-linear loads
PF
Preferred installation
loocation
Possibility of motors selfexcitation
Over voltage during low
load
Voltage Regulation
Reduces KWh
YES
YES
YES
In parallel to sub-panels or important loads
NO
Mains panel
NO
YES- Over correction
NO
YES
Improves voltage unbalance of 3 phases
Risk of harmonic resonance
may destroy equipments
YES
NO – only through line losses
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
Stand by Power
0.1% Max
20 Watts
Operating Temp.
-40 C To +70 C
Estimated Saving (Inductive loads)
2.0 /3.0 KW
Case Study
W
PG OFF
PG ON
490,000
485,000
480,000
475,000
470,000
465,000
reduction 12,2 KW
460,000
455,000
450,000
445,000
440,000
435,000
430,000
425,000
7:53:30 AM
7:54:00 AM
7:54:30 AM
7:55:00 AM
Power Factor - 3Ø ([PF])
Blower Building MCC
PF increases from 0,96 to 0,99
Immediate reduction of 12,2 KW
7:55:30 AM
7:56:00 AM
Real Power - 3Ø (W)
420,000
7:56:30 AM
[PF]
0.998
0.996
0.994
0.992
0.99
0.988
0.986
0.984
0.982
0.98
0.978
0.976
0.974
0.972
0.97
0.968
0.966
0.964
0.962
0.96
0.958
0.956
Case Study
OFF
ON
The Graph shows the fluctuation in voltage due to the VFDs presence in the circuit
When PowerGUARD is activated, there is an increase in voltage and a reduction in the deviation between the 3
phases.
Case Study
W
kW Demand/Power Factor
240,000
220,000
200,000
OFF
ON
ON
OFF
ON
180,000
160,000
140,000
120,000
100,000
80,000
60,000
40,000
20,000
12:00:00 PM
12:10:00 PM
Power Factor - 3Ø ([PF])
12:20:00 PM
0
[PF]
0.95
0.9
0.85
0.8
0.75
0.7
0.65
0.6
0.55
0.5
0.45
0.4
0.35
0.3
0.25
0.2
0.15
0.1
0.05
0
Real Power - 3Ø (W)
Start: 1/30/2013 11:57:08 AM End: 1/30/2013 12:27:49 PM
Wesper Chiller
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