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HOW KVAR® WORKS back to top
- KVAR® has patented an apparatus and methodology for determining, to an exact science, the amount of capacitance that is needed to optimize inductive motors to unity for maximum saving.
- KVAR® fine tunes the electrical system from the inductive equipment back through the utility company’s KVA electric meter, kilowatt hour meter (kWh) or demand meter. This fine-tuning slows down the operation and therefore reduces electrical consumption.
- The KVAR® stores the reactive power to create the electromagnetic field (EMF) around the inductive windings of a motor.
- As motors operate, reactive power is “pulled” and “pushed” to and from the KVAR® by the motor at 60 cycles/second.
- The KVAR® stores and releases what the motors need to function more efficiently.
- This unique approach serves to reduce the heat generated on the lines and therefore reduces the strain placed on all the electrical components.
- Electricity, that would normally be pushed back through the power distribution lines, is reclaimed and recycled by the KVAR®.
- The KVAR® reclaims, stores, recycles and supplies power to all inductive loads.
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WHAT KVAR® DOES back to top
★ Reduces power consumption
★ Rapid return on investment
★ Increases the life of the motors through heat reduction
★ Enhances capacity of existing electrical system
★ Reduces amperage surges
★ Improves efficiency to all induction motors
★ Protects against lightning damage
★ Reduces the harmful effects of dangerous EMFs (Electric and Magnetic Fields )
★ Reduces carbon footprint
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HOW DOES POWER FACTOR CORRECTION SAVE MONEY? back to top
The advantage of a high power factor is that line currents can be reduced which will in turn reduce voltage drop and decrease line losses. This saves money. So there are two possible ways to save money; increasing your facilities power factor rating to eliminate possible surcharges from the utility company and/or a reduction in watts.
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INSTALLATION IS QUICK AND THE SAVINGS IS IMMEDIATE back to top
Qualified electricians should perform all work.
KVAR® panel mounted system is attached to the top breaker on a 100, 200 or 400 amp single or three phase service panel. By installing KVAR® in this location, you are optimizing both sides of the busbar in your panel. KVAR® panel system, can be installed outdoors or indoors, at the main breaker panel or a subpanel.
For larger three phase motors, the preferred location of KVAR® is at the motors disconnect, which are installed after trained electricians have performed an individual sizing of the respective motors. This creates the largest savings and quickest return on investment.
Businesses can now dramatically reduce the cost of determining how much capacitance is required to optimize each inductive load at their facility. The patent KVAR® apparatus and methodology achieves this by eliminating the typical electrical engineering, design, and manufacturing costs. This precision technology fine-tunes each motor to unity for immediate savings with a quick return on investment. Installation is fast, simple and sized to the specific unit.
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WHAT IS POWER FACTOR (PF)? back to top
Electrical loads such as electric heating and incandescent lights use "resistive" power, which is measured in kilowatts (kW). Certain types of loads, such as electric motors, however, require magnetizing current to operate. In order to properly measure the demands placed on the system by these types of uses, your utility company must also measure demand in terms kilovolt amperes (kVA). The ratio between the kW and kVA demands (kW/kVA) is referred to as the "Power Factor". A PF of 1.0 is ideal and a PF of 0.65 would require that approximately 1.5 times the application’s real power has to be available from the AC line.
"Power Factor" is a measure of how effectively you are using power. In calculating your bill, utilities assume that the power factor should be above 90% of the kVA demand. In short, when your power factor drops below 90% (rates vary by hydro suppliers), a power factor surcharge is applied to cover the cost of
supplying additional reactive power. Therefore a Power Factor below 90% is considered low.
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WHY IS POWER FACTOR IMPORTANT? back to top
Power Factor can affect your total energy costs. Improving
the Power Factor improves efficiency, often resulting in
significant economic savings. Benefits, derived from
improving your Power Factor, may include:
★ Reduced energy and distribution costs
★ Lower distribution losses in your electrical system
★ Higher and more quality voltage regulation
★ Increased available capacity to serve actual working power requirements
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WHAT KIND OF LOADS CONTRIBUTES TO POOR POWER FACTOR? back to top
If you have inductive loads, which require the use of a
magnetizing current to create a magnetic field, you may
have Power Factor considerations. Inductive
characteristics are more pronounced in motors and
transformers and are found more often in commercial and
industrial facilities. One of the worst offenders is a lightly
loaded induction motor, often found in “cycle processes” — for example, in the operation of saws, conveyors, and
grinders—where the motor must be sized for the heaviest load. Other sources include: induction furnaces, standard
stamping machines, single stroke presses, automated machine tools, chillers, compressors, dust collectors, AC units and conveyors.
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HOW IS POWER FACTOR SHOWN ON MY BILL? back to top
Power Factor is usually shown in the detail charges area of your bill (industrial/commercial only). If the Power Factor (PF) is less than 90, then your electrical costs could be 20% higher than a 90 plus PF shop. Utility companies do not break out the extra cost of a poor PF on your bill. Even if your PF is in the low 90's bringing this rating up will still give you the benefits of a higher PF rating.
If you do not have a PF rating on your bill our audit will point out any poor inductive loads that can be brought to unity to help reduce the power consumption, extend the life span of the motors and reduce maintenance costs.
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WHAT CAN BE DONE TO IMPROVE POWER FACTOR? back to top
The best way to improve Power Factor depends largely on
the particular operating considerations involved. In some
cases, motors or transformers can be sized more closely
to the actual work requirement, effectively improving the
Power Factor. It may be that motor idling or “no load”
running periods can be reduced, producing a two-fold
benefit: improved Power Factor and more effective energy
management.
Although there is no single “right” answer, the installation
of low-cost, Power Factor correction capacitors offers one
of the most effective corrective measures. Inductive
(motor) loads have a negative effect on the electrical
system, and Power Factor correction capacitors can be
used to offset this inefficiency. You may want to check
with our consultants to find out whether this
corrective measure could improve your efficiency.
Here are just a few motors that might be found in a
industrial setting: compressors, chillers, pumps, dust collectors, hydraulics, exhaust fans, AC units and conveyors.
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