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Voltage Optimisation (Great energy saving starts at source!)

Utilities in the world have experimented with schemes to optimize voltage – narrow, and lower, the range at which voltage is delivered to conserve energy, reduce carbon emissions and reduce customer costs. Unfortunately, there is little economic incentive for utilities to move at more than a glacial pace toward general implementation. Absent a delivery-side solution from utilities, marketing-oriented firms have rushed to fill the vacuum with client-side or demand-side optimization devices that can be purchased and installed by end users. These firms claim their technologies can reduce electrical consumption 10% to 30%, or even more in specific instances. But these numbers must be viewed skeptically. Qualified studies indicate that voltage optimization can reduce electrical usage, but only by 0.5% to 4% on average, and then only for commercial customers. While these savings are not insignificant, in most cases they are not 3 enough to justify investment in a demand-side solution based solely on the cost of electricity. Generally not factored into the return on investment equation, however, are the additional benefits derived from demand-side voltage optimization.

Voltage optimizer is an established and proven technology, allow dynamic fine-tuning of output voltage, which can reduce energy usage, as well as correct for supply voltage unbalance, which can significantly impact equipment longevity. These two factors, combined with the very real cost of carbon, significantly alter the ROI equation. Without resorting to exaggerated marketing claims, data suggests that demand-side via the latest generation of lower cost voltage optimizer may now offer a solid return on investment for many industrial and commercial enterprises. Voltage optimization is a crucial topic. With utilities slow to address the issue on the delivery side, private companies have stepped in with solutions that purport to optimize voltage on the demand side. If your site is being supplied with electricity at a higher voltage level than you need, you could be wasting energy, wasting money and producing excessive carbon emissions. Voltage optimization can help. Electrical equipment can sometimes consume more power at higher voltages. Voltage optimization reduces the voltage of the electricity supplied to equipment, minimizing consumption while remaining within the operating conditions specified by the equipment manufacturer. Basic electrical laws mean the power required by certain loads is proportional to the square of the voltage. A supply voltage in excess of the territory nominal voltage, may result in excessive energy consumption. The basic principal of all voltage optimization equipment is to reduce the voltage level from that of the incoming supply. To achieve this change in voltage level, an electrical transformer (static or electronic) is required. The ratio of primary to secondary windings of these electrical transformers is set to provide the desired level of voltage reduction. To determine whether voltage optimization will reduce your energy consumption, you will need to understand what percentage of your load is ‘voltage dependent’. A voltage dependent load is an electrical device whose power consumption varies with the voltage being supplied to it.

There are two types of voltage optimization equipment offered by Tradersturf.Energy for the Philippines : 1). Fixed ratio. This provides a fixed reduction at all times and is suitable for supplies that remain within their nominal tolerance. If cost is the overriding factor, the voltage drop can be reduced so the voltage remains within an acceptable tolerance. However, energy savings will be reduced. 2). Variable ratio. This provides a constant voltage, regardless of load conditions, through continuous adjustment. This type of equipment is suitable for supplies that DO NOT remain within their nominal tolerance. The Voltage optimizer , a reliable and trusted technology proven through more than a decade of use, may provide the most cost-effective option for facility managers seeking to lower energy costs. While lighting system upgrades and conservation education programs can also lead to significant reductions in energy usage, voltage optimization may be the fastest, surest and most defensible way for commercial entities to implement power savings and carbon reduction programs. With electricity at kVA, voltage at 105% optimum on average, and supply voltage unbalance at just 1.5%, at current prices, a voltage optimizer dedicated to a kVA load would generate a savings a year before factoring in reduced air-conditioning needs, carbon credits or savings due to peak shaving, leading to a positive ROI. And these numbers are very conservative. Over-voltage of 110% is not unusual, phase unbalance of 5% is often seen in rural/urban regions or at the ends of lines. In addition to the direct savings from reduced electrical usage and extended equipment life, the multiple benefits modern, voltage optimizer provide industrial and commercial customers suggest more serious consideration and general deployment of the devices.

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