Selected parameters OUTPUT SIGNAL 1 relay SETPOINTS 2, adjustable MONITORED VARIABLE 3-phase AC voltage monitoring Others SIZE 17,5 mm POWER SUPPLY RANGE 208÷480 VAC MONITORING FUNCTION Under and over voltage, phase sequence, phase loss MOUTING DIN-rail INPUT RANGE 208÷480 VAC DELAY 1, adjustable OTHERS VLN monitoring
Monitoring Relays True RMS 3-Phase, 3-Phase+N, Multi-function Type DPB51 • TRMS 3-phase over and under voltage, phase sequence and phase loss monitoring relay • Detects when all 3 phases are present and have the correct phase sequence • Detects if all the 3-phase-phase or phase-neutral volt- ages are within the set limits • Upper and lower limits separately adjustable • Measures its own power supply • Adjustable voltage on relative scale • Adjustable delay function (0.1 to 30 s) • Output: 5 A SPDT relay N.E. • For mounting on DIN-rail in accordance with DIN/EN 50 022 • 17.5 mm DIN-rail housing • LED indication for relay, alarm and power supply ON Product Description Ordering Key DPB 51 C M44 3-phase or 3-phase+neutral line voltage monitoring relay forphase sequence, phase loss, over and under voltage (separately adjustable set points) with built-intime delay function. Supplyranges from208 to 480 VAC covered by one multivoltage relay. 17.5 mm wide housing suit- able both for back and front panel mounting. Housing Function Type Item number Output Power supply Type Selection MountingOutput Supply: 208 to 480 VAC DIN-railSPDT DPB 51 C M44 InputSpecifications Output Specifications Input L1, L2, L3, N Terminals L1, L2, L3, N Measures its own supply Note: Connect the neutral only if it is intrinsically at the star centre Measuring ranges 208 to 480 Δ VAC 177 to 550 Δ VAC Ranges Upper level +2 to +22% of the nominal voltage Lower level -22 to -2% of the nominal voltage Note: The input voltage must not exceed the maximum rated voltage or drop below the minumum rated voltage reported above. Hysteresis Set points from 2 to 4% 1% Set points from 4 to 22% 2% OutputSPDT relay Rated insulation voltage 250 VAC Contact ratings (AgSnO2) µ Resistive loadsAC 1 5 A @ 250 VAC DC 12 5 A @ 24 VDC Small inductive loads AC 15 2.5 A @ 250 VAC DC 13 2.5 A @ 24 VDC Mechanical life≥ 30 x 106 operations Electrical life≥ 105 operations (at 5 A, 250 V, cos ϕ = 1) Operating frequency ≤ 7200 operations/h Dielectric strength Dielectric voltage2 kVAC (rms) Rated impulse withstand volt. 4 kV (1.2/50 µs) Specifications are subject to change without notice (03.09.14)1
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