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Protection Relays & Controls Generator & Single-Function Protection–Voltage T3100 Series Voltage Relay Description The T3100 Voltage Relay is designed for voltage monitoring on generators, bus bars or other distribution systems. The T3100 will signal when the voltage is out of limits for a preset time period. The T3100 consists of two circuits, one circuit for overvoltage and one for undervoltage monitoring. Each circuit has individual settings for voltage levels and time delays. Features & Benefits Features Simplified Circuit Diagram Accepts high supply voltage variation Visual indication of power, Provides quick and concise status information pick-up, and output trip T3100 (Voltage Relay) L1 (L) 1 2 3 L2 (N) UNDERVOLTAGE ALARM 10 9 8 OVERVOLTAGE ALARM 7 6 5 Ordering Information Ordering Number Direct line-line or lineneutral voltage supply (up to 690 Vac) Combining 2 relays in same enclosure Galvanic isolated inputs DIN-rail or screw-mount & adjustment by potentiometers Simplifies design and installation. No need for PTs. Economic solution. Monitoring both undervoltage and overvoltage in same unit, and ccupying less space in the switch panel Protects the unit against high AC voltage and currents from the installation including spikes Easy installation Specifications Terminals 1-3 2-3 T3100.0010 T3100.0020 T3100.0030 230 V 450 V 110 V 400 V 100 V T3100.0040 480 V 415 V T3100.0060 127 V 120 V Other voltages are available on request. BENEFITS Ensures correct operation in spite of voltage supply fluctuations (fulfills marine class requirement) Overvoltage Level 100-120% Delay 1-10 sec. Hysteresis 1-10% Undervoltage Level 80-100% Delay 1-10 sec. Hysteresis 1-10 % Max. Voltage 660 V Voltage Range 70-120% 5 VA at UN Consumption Frequency Range 40-400 Hz Overvoltage Relay Normally de-energized Undervoltage Relay Normally energized Contact Rating AC: 250 V, 2 A, 250 VA DC: 60 V, 2 A, 100 W Overall Accuracy ±3% of highest value Repeatability ±1% Operating Temperature –20°C to + 70°C Dielectric Test 2500 V, 50 Hz EMC CE according to EN50081-1, EN50082-1, EN50081-2, EN50082-2 Approvals Certified by major marine classification societies Burn-in 50 hours before final test Enclosure Material Polycarbonate. Flame retardant Weight 0.5 kg DimensionsH 70 mm (2.76”); W 100 mm (3.94”); D 115 mm (4.52”) 35 mm DIN rail or 4 mm (3/16”) screws Installation www.BDTIC.com/littelfuse © 2013 Littelfuse Protection Relays & Controls Littelfuse.com/t3100 Rev: 4-A-050213