Scaled low-voltage side surge current tests on a model distribution system

The model system and the test procedures are described. The tests revealed the most significant circuit parameters affecting the magnitude and distribution of currents that will flow in a customer's wiring. The tests also showed that distribution transformers utilizing interlaced windings rated 240/120 volts are unlikely to increase significantly the magnitude of surges in comparison to noninterlaced windings of the same rating. >

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