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Guaranteed Energy Savings of 8-10% with Voltage Optimisation

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What is Voltage Optimisation?

Quite simply it’s reducing Voltage applied to electrical
equipment to make an Energy Saving.


ImageAll electrical equipment intended for use in Europe must carry a CE mark to show that it complies with the European Harmonised Voltages between 207and 253V.

Because the European market is far larger than the UK market electrical equipment is predominantly designed to operate most efficiently at 220-230V This means that A rated appliances are only A rated at 220-230V rather than 242V which we experience on average in the UK.

Therefore, a large proportion of electrical equipment will consume more energy as a result of the higher supply voltage applied to it. Because of this, it makes more sense to apply voltages that are nearer to the lower end of the CE voltage range. Voltage Optimisation is designed to provide a supply voltage of around 220V.


But if the voltage is reduced won’t the current simply increase?


To explain this we need to consider Ohms Law:

P = V(squared) / R

This means for voltage dependent equipment, every 1% decrease in volts, a 2% decrease in Watts is achieved.

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