MODEL 108B
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• Indicates Phase Sequence • Detects Loss of One or More Phases • Compact & Lightweight • Color-coded Leads SPECIFICATIONS DESCRIPTION The Models 108B (50/60Hz) and Model 125C (400Hz) Phase Sequence Detectors permit the operator to quickly and easily determine proper phase sequence (either ABC or CBA). This can be vitally important information when installing, or making wiring changes to motors, wattmeters, transformers, electrical installations, power factor meters or generators. To use, connect the Detector to any 3-phase circuit from 208 to 480 volts, Wye or Delta. Proper phase sequence, and all phases present will illuminate the ABC lamp. An open phase condition will illuminate both lamps. If two or more phases are open, neither lamp will illuminate. See the Condition Chart. E-mail: sales@time-mark.com Internet: http://www.time-mark.com 1 1440 East Pine Street Tulsa, Oklahoma 7411 6 11/2011 © 2011 TIME MARK CORPORATION TIME MARK is a division of

Phase Sequence DetectorsREAD ALL INSTRUCTIONS BEFORE INSTALLING, OPERATING OR SERVICING THIS DEVICE. KEEP THIS DATA SHEET FOR FUTURE REFERENCE. GENERAL SAFETY POTENTIALLY HAZARDOUS VOLTAGES ARE PRESENT AT THE TERMINALS OF THE MODEL 108B OR 125C DETECTORS. ALL ELECTRICAL POWER SHOULD BE REMOVED WHEN CONNECTING OR DISCONNECTING WIRING. THIS DEVICE AND WIRING SHOULD BE INSTALLED AND SERVICED BY QUALIFIED PERSONNEL. CONNECTION Connect the three clip leads to the 3-phase power source. Apply AC power. One of the detector lamps should illuminate, indicating the phase sequence as connected. If the...