Description
3-PHASEVOLT MONITOR
he 102A series is a three-phase, auto-ranging, dual-range voltage monitor that protects 190–600 V ac, 50*/60 Hz motors
regardless of size. This monitor provides a user selectable nominal voltage set point and will automatically select between
the 200 V and 400 V range. A unique micro controller-based voltage and phase-sensing circuit constantly monitors the
three-phase voltages to detect harmful power line conditions. When a harmful condition is detected, the output relay is
deactivated after a specified trip delay. The output relay reactivates after power line conditions return to acceptable levels.
The 102A monitor includes advanced, single LED diagnostics with five different light patterns that distinguish between
faults and normal conditions. LED indications include normal operation, power-up restart delay, reverse-phase trip,
unbalance/single-phase trip, and high- or low-voltage trip.
Applications
• Fan motors
• Air conditioners
• Compressors
• Heat, well, and sump pumps
• Small conveyer motors
