The Megger 560060 / 560400 Phase Rotation Tester permits the electrical contractor or industrial maintenance electrician to permanently connect and tape the terminals of the motor being installed, without having to first energize the motor by a temporary hookup from a power source, if available, to determine motor rotation. Therefore, the test set eliminates the need for temporary connections that can be time consuming, costly and quite hazardous, particularly where many large, high-voltage motors are involved.
The three motor leads on the left side of the test set are for attachment to the terminals of the motor being tested for rotation determination.
Fuses are inserted in the motor A and C test leads as protection in the event the user accidentally touches these leads to an energized circuit. These standard fuses are easily removed and replaced from their panel-mounted holders.
The three lines leading to the right of the test set are for direct attachment to energized ac power systems up to 600 volts to determine the system phase sequence.
The Motor and Phase Rotation Tester provides a positive way toidentify the leads of a disconnected polyphase motor; it also identifies true phase sequence of energized 60-Hertz ac power lines up to 600 volts. Both are necessary to ensure that a motor will rotate in a prescribed direction when energized.
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