6221 EL - Digital 3 Phase Industrial Earth Leakage Tester
This Test Instrument is a combined 3 Phase Presence and Rotation Indicator combined with a 3 Phase Industrial Earth Leakage Tester. When utilized as a 3 Phase Presence and Rotation Indicator, the instrument does not use the batteries and can still be utilized if the batteries are not present or if the batteries are too low. The 3 Phase Presence and Rotation Indicator which is inside the 6221 EL, takes it's power from the circuit under test.
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Hoyt Electrical Instrument Works Inc.
23 Meter Street
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