Using 690V for industrial low-voltage distribution networks to lower investment costs and improve network efficiency. The most commonly used voltage in industrial facilities to power the low-voltage electrical distribution system is 400V, and in rare cases, 220V three-phase.
The most commonly used voltage in industrial facilities to power the low-voltage electrical distribution system is 400V, and in rare cases, 220V three-phase. This level is widely used because it's the same voltage used for the public electricity distribution network, so equipment, appliances, and components are readily available on the market.
The use of 690V instead of 400V implies the possibility of increasing the transformer's rated power. Its maximum value, however, is limited by the fault current duty on low-voltage panels and their switching devices and motor starters.
Low-voltage distribution panels are generally designed, with regard to dielectric strength, for a voltage of up to 690V. Therefore, standard-manufactured low-voltage distribution panels can be used either at 400V or 690V.
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The paper explores the potential benefits of adopting a 690 V level for low voltage (LV) industrial distribution networks, in contrast to the commonly used 400 V system.
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Using 690V for industrial low-voltage distribution networks to lower investment costs and improve network efficiency. The most commonly used voltage in industrial facilities to power the low-voltage
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