[rvazz1]

The incoming lines are MV 3-phase/3-wire and the outgoing lines are LV 3-phase + neutral/4-wire.

The transformer is a Dyn configuration

This system is commonly used in Europe and the rest of the world outside North America

[rvazz1]

@guest said:

For devices that reduce consumption during idle running, look up the following:

http://www.energyideas.org/documents/factsheets/PTR/MotorVoltageControllers.pdf

http://energyexperts.org/EnergySolutionsDatabase/ResourceDetail.aspx?id=992

http://www.powerpulse.net/techPaper.php?paperID=142&print

Essentially, the Nola controllers reduce the voltage (thus reducing the current and increasing the power-factor) to under-loaded motors, reducing the magnetic and copper losses.

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