The Seaward PH3 is designed for use with potential indicators and phasing rods with domed contact electrodes.
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A proving unit for the Seaward KD1E, KD1E/KAD, KD1E/22, KD1E/15D & KD1E/33D.
A highly portable, battery powered proving unit for proving high voltage indicators, live line testers and digital potential indicators. The Seaward PH3 (domed contact electrode) proving unit produces a DC output voltage for confirming the operation of voltage indicators before and after use.