Protection Relays Voltage Monitoring Relays 102A SERIES 3-Phase Voltage/Phase Monitor Description The 102A is a 3-phase, auto-ranging, dual-range voltage monitor that protects 190-480VAC, 50/60Hz motors regardless of size. The product provides a user selectable nominal voltage setpoint and the voltage monitor automatically selects between the 200V and 400V range. A unique microcontroller-based voltage and phase-sensing circuit constantly monitors the 3-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 Model 102A includes advanced single LED diagnostics. Five different light patterns distinguish between faults and normal conditions. Features & Benefits FEATURES BENEFITS Wiring Diagram Proprietary Constant monitoring of single-phase, low voltage, microcontroller high voltage (102A-9), voltage unbalance, phase 102 WITH MOTOR CONTROL based circuitry reversal, harmful power line conditions. Auto-sensing wide Automatically senses system voltage between voltage range 190 - 480VAC. Saves setup time. Quick visual indicator for cause of trip. LED Advanced LED indications include: normal operation, power-up diagnostics restart delay, reverse-phase trip, unbalance/ single-phase trip, high or low voltage trip Adjustable trip delay Prevent nuisance tripping due to rapidly fluctuating (102A2) power line conditions. Ordering Information LINE MODEL DESCRIPTION VOLTAGE Fixed low voltage trip delay (4 sec), fixed 102A 190-480VAC restart delay (2 sec) Has variable restart delay (manual or 102A2 190-480VAC adjustable 2-300 seconds) 102 WITH ALARM CONTROL Has adjustable trip delay at 2-30 seconds 102A3 190-480VAC (unbalance and phasing trip delays remain at 2 seconds). Has high voltage protection. High Voltage 190-480VAC 102A-9 Trip is 110% of setpoint, Reset is 107% of setpoint. Fixed low voltage trip delay (4 sec), fixed 102600 475-600VAC restart delay (2 sec) 2018 Littelfuse Protection Relays & Controls Rev: 1-B-100818 wwwwww.littelfuse.com/102a.littelfuse.com/Protection Relays Voltage Monitoring Relays 102A SERIES General Characteristics Specifications Ambient Temperature Range Frequency 50*/60Hz Operating -40 to 70C (-40 to 158F) Functional Characteristics Storage -40 to 80C (-40 to 176F) Low Voltage (% of setpoint) Trip & Reset Accuracy 1% Trip 90% Maximum Input Power 5 W Reset 93% Terminal Voltage Unbalance (NEMA) Torque 7 in.-lbs. Trip 6% Wire Size 12-18AWG Reset 4.5% Standards Passed Trip Delay Time Electrostatic Discharge (ESD) IEC 61000-4-2, Level 3, 6kV contact, 8kV air Low/High Voltage 4 seconds (standard) Fast Transient Burst IEC 61000-4-4, Level 3, 4kV input, Unbalance & Phasing Faults 2 seconds 2kV input/output Restart Delay Time Transient Protection (Internal) IEC 61000-4-5 1995 6kV After a Fault 2 seconds (standard) Safety Marks After a Complete Power Loss 2 seconds (standard) UL UL508 (File E68520) Output Characteristics CSA 22.2 No. 14 (File 46510) Output Contact Rating CE IEC 60947-6-2 (SPDT - 1 Form C) Dimensions H 74.4 mm (2.93) W 133.9 mm (5.27) Pilot Duty 480VA 240VAC D 74.9 mm (2.95) General Purpose 10A 240VAC Weight 1.05 lbs. (16.8 oz., 476.27 g) Mounting Method 8 screws *Note: 50Hz will increase all delay timers by 20%. Disclaimer Notice Information furnished is believed to be accurate and reliable. However, users should independently evaluate the suitability of and test each product selected for their own applications. Littelfuse products are not designed for, and may not be used in, all applications. Read complete Disclaimer Notice at www.littelfuse.com/product-disclaimer. 2018 Littelfuse Protection Relays & Controls Rev: 1-B-100818 wwwwww.littelfuse.com/102a.littelfuse.com/