102A LITTELFUSE | Alldatasheet
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Technical content
© 2018 Littelfuse Protection Relays & Controls www.littelfuse.com/ Protection Relays Voltage Monitoring Relays www.littelfuse.com/102a Rev: 1-B-100818
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 Proprietary microcontroller based circuitry Constant monitoring of single-phase, low voltage, high voltage (102A-9), voltage unbalance, phase reversal, harmful power line conditions. Auto-sensing wide voltage range Automatically senses system voltage between 190 - 480VAC. Saves setup time. Advanced LED diagnostics Quick visual indicator for cause of trip. LED indications include: normal operation, power-up restart delay, reverse-phase trip, unbalance/ single-phase trip, high or low voltage trip Adjustable trip delay (102A2) Prevent nuisance tripping due to rapidly fluctuating power line conditions.
Ordering Information
102A 190-480VAC Fixed low voltage trip delay (4 sec), fixed restart delay (2 sec) 102A2 190-480VAC Has variable restart delay (manual or adjustable 2-300 seconds) 102A3 190-480VAC Has adjustable trip delay at 2-30 seconds (unbalance and phasing trip delays remain at 2 seconds). 102A-9 190-480VAC Has high voltage protection. High Voltage Trip is 110% of setpoint, Reset is 107% of setpoint. 102600 475-600VAC Fixed low voltage trip delay (4 sec), fixed restart delay (2 sec) 3-Phase Voltage/Phase Monitor 102A SERIES Wiring Diagram
102 WITH MOTOR CONTROL
102 WITH ALARM CONTROL
© 2018 Littelfuse Protection Relays & Controls www.littelfuse.com/ Protection Relays Voltage Monitoring Relays www.littelfuse.com/102a Rev: 1-B-100818 Specifications Frequency 50*/60Hz Functional Characteristics Low Voltage (% of setpoint) Trip 90% Reset 93% Voltage Unbalance (NEMA) Trip 6% Reset 4.5% Trip Delay Time Low/High Voltage 4 seconds (standard) Unbalance & Phasing Faults 2 seconds Restart Delay Time After a Fault 2 seconds (standard) After a Complete Power Loss 2 seconds (standard) Output Characteristics Output Contact Rating (SPDT - 1 Form C) Pilot Duty 480VA @ 240VAC General Purpose 10A @ 240VAC 102A SERIES General Characteristics Ambient Temperature Range Operating -40° to 70°C (-40° to 158°F) Storage -40° to 80°C (-40° to 176°F) Trip & Reset Accuracy ±1% Maximum Input Power 5 W Terminal Torque 7 in.-lbs. Wire Size 12-18AWG Standards Passed Electrostatic Discharge (ESD) IEC 61000-4-2, Level 3, 6kV contact, 8kV air Fast Transient Burst IEC 61000-4-4, Level 3, 4kV input, 2kV input/output Transient Protection (Internal) IEC 61000-4-5; 1995 ±6kV Safety Marks UL UL508 (File #E68520) CSA 22.2 No. 14 (File #46510) CE IEC 60947-6-2 Dimensions H 74.4 mm (2.93”); W 133.9 mm (5.27”); D 74.9 mm (2.95”) 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.