Frequently Asked QuestionsIf Power = Volts x AMPS and you reduce the Volts don’t I just need to use more AMPS? So if I make 100 units of a product or lift 10 people up 5 floors in a lift wont I need the same Power? If so, then how do you save me money?
Electrical equipment is not perfectly efficient meaning less than 100% of the electrical power is converted to mechanical power. Using the lift as an example, the mechanical output is moving the lift. This does not change regardless if the Beolec is installed or not. The lift will still move say 5 floors. When the lift moves however, the motor is not perfectly efficient so when the Beolec supplies the lift motor then other motor power losses reduce, particularly when it is lightly loaded. So in summary, the lift moved the same distance but it took a little less power to get there.
Power Factor Correction (PFC) equipment uses capacitance to offset the reactive power generated by motors. Without PFC this reactive power flows to the grid causing additional transmission power losses for the utility company and so they charge for it. This is the KVA based demand charge on the power bill.
Our equipment provides passive power factor correction. The Beolec provides passive power factor correction by reducing, balancing and regulating the voltage supplied to the premises including motors that drive air conditioning and refrigeration, and lighting etc. Balancing the voltage reduces motor inefficiency due to uneven supply voltage. Reducing the voltage reduces magnetic core losses in motors and improves the power factor. The Beolec can operate alongside PFC. Even when PFC is installed, the Beolec will still help reduce demand charges in line with the KW reductions.
The Beolec works well with magnetic and resistive loads. Halogen lighting, anything driven by direct on line three phase motors typical of refrigeration, air conditioning, ventilation fans, older technology lighting like T8 fluoro lamps and hi-bay lighting with magnetic ballast, T5 fluoro and LED lighting with non-regulating ballasts.
The Beolec does not work well with inverter based variable frequency drives for motors, lighting with energy regulating ballasts (e.g. ballasts that have a wide or universal input voltage range), very heavily loaded motors. For lighting with energy regulating ballasts, the savings may be zero just on that part of the building load, however field experience has shown the life expectancy of these products improves significantly when supplied by a reduced and regulated voltage. For inverter driven motor loads the Beolec may result in a zero to perhaps 3% energy savings.
The Beolec Mark 4 uses a continuously variable, robust regulating system that can smoothly and continuously regulate the voltage supplied to the building. This allows the voltage to be controlled accurately in small steps thereby maximising output voltage balance and savings. Other voltage regulators use a tapped transformer approach resulting in large voltage steps up and down to attempt to regulate. They are basically an evolution if the old tapped step-down transformer approach. Large voltage steps means less potential for energy savings.
The Beolec reduces the power required by the downstream electrical loads. Reduced energy demand means lower energy bills.
If equipment is installed that does not respond to the Beolec effect (i.e. consumes less energy if the voltage is reduced like lighting with energy regulating ballasts) then the Beolec has no energy reducing effect just on that part of the load and the customer will not be charged for a saving that doesn't exist.
There is a technical foundation that explains the how different electrical loads respond to having the supply voltage reduced, balanced, and regulated. Furthermore, the energy saving performance of the Beolec is verified using an interlacing mode (alternate weekly periods of regulation V’s non-regulation) and this data is assessed the same way as other energy reducing projects – through the internationally accepted IPMVP process. This process directly measures the effect of the Beolec on the individual premises that it supplies.
If the system needs to be de-commissioned due to the site closing Beovista will happily share the cost of decommissioning the system with the client. If the site is being set up in a different location the system can be recommissioned at that location again sharing the cost of this with the customer. If the system needs to be decommissioned due to the load profile of the site changing then Beovista would be happy to update the size of the system to allow for regulation to continue. The cost of recommissioning the new unit would be shared again between both parties
Based on the technology and the variability of savings that can be achieved across different installations Beovista’s preferred approach is to license the equipment and share in the savings that the Beolec generates. This removes the risk for the customer of purchasing a piece of Beovista technology which may take a large amount of time to pay back given its application at the wrong site location. Beovista prefers to maintain input into a sites eligibility for use of the Beolec and then share in whatever savings are generated from that installation.
Old VO technology used fixed tapping methods to reduce voltage. Old VO products also had no protection mechanisms. The Beolec is an extremely safe system with several safety features built in as standard product features. The system has no electronics in the high current path making it very resilient against down-stream equipment faults. Each layer of the three phase system has an individual circuit breaker linked to the regulation of power on that layer. This means that if any irregularity is detected the layer and the breaker are designed to take itself off line. The rest of the layers regulating power to that phase are designed to continue to work as per normal. When two or more layers fail the systems main bypass breaker is designed to be trigger which takes the entire system offline and the site is returned to mains power.
Harmonics are sound, heat or vibrations created by the distortion of the electrical sign wave. Harmonics can cause deterioration in electrical insulation. Any savings generated by the reduction in electricity usage can be eroded by increased cost of repairs and maintenance.
Voltage imbalance wastes energy in motors and transformers and can cause the costs of repairs and maintenance on a plants equipment to be higher than expected. Aligning phases and providing a smooth continuous flow of predictable voltage can result in improved maintenance of motors, lighting and electronics. A customer across four sites saw a reduction in maintenance costs of $17,000 across six months. This represented a 40% reduction in maintenance costs.
Reducing voltage reduces your kWh consumption of electricity. This is the major metric that your electricity bill tariff rates are charged. By reducing your kWh consumption you are able to reduce your energy bill by up to 20% with an average reduction sitting between 6-12% across the variable component of your electricity bills. On an average $250,000 annual electricity bill this represents a $13,000 saving per year or $150,000 across the length of our licensing agreement.
Simply voltage reduction reduces kWh consumption of electricity the major volume metric your utility providers tariff structure is charged against. Reducing kWh will equate to a reduction in your electricity bill.
The following types of equipment does not respond well to voltage optimisation:
- VSD motors
- DC drives
- LED lighting using switch mode power supplies
- Battery chargers user high frequency chopper controls
- Highly loaded motors
- Modern lift
- Some fluoro lighting
- High temperature electric heating