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 Supply ranges from 208 to Housing line voltage monitoring relay 480 VAC covered by one Function for phase sequence, phase multivoltage relay. Type loss, over and under voltage 17.5 mm wide housing suit- Item number (separately adjustable set able both for back and front Output points) with built-in time panel mounting. Power supply delay function. Type Selection Mounting Output Supply: 208 to 480 VAC DIN-rail SPDT DPB 51 C M44 Input Specifications Output Specifications Input Output SPDT relay L1, L2, L3, N Terminals L1, L2, L3, N Rated insulation voltage 250 VAC Measures its own supply Contact ratings (AgSnO ) 2 Note: Connect the neutral only Resistive loads AC 1 5 A 250 VAC if it is intrinsically at the star DC 12 5 A 24 VDC centre Small inductive loads AC 15 2.5 A 250 VAC Measuring ranges DC 13 2.5 A 24 VDC 208 to 480 VAC 177 to 550 VAC 6 Mechanical life 30 x 10 operations Ranges 5 Electrical life 10 operations Upper level +2 to +22% (at 5 A, 250 V, cos = 1) of the nominal voltage Operating frequency 7200 operations/h Lower level -22 to -2% Dielectric strength of the nominal voltage Dielectric voltage 2 kVAC (rms) Note: The input voltage Rated impulse withstand volt. 4 kV (1.2/50 s) 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% Specifications are subject to change without notice (03.09.14) 1DPB51 Supply Specifications General Specifications (cont.) Power supply Overvoltage cat. III Indication for Rated operational voltage (IEC 60664, IEC 60038) Power supply ON LED, green through terminals: L1, L2, L3, N Alarm ON LED, red (flashing 2 Hz Delta Voltage: 208 to 480 VAC 15% during delay time) 45 to 65 Hz Output relay ON LED, yellow Star Voltage: 120 to 277 VAC 15% Environment 45 to 65 Hz Degree of protection IP 20 Rated operational power Pollution degree 3 13 VA 400 VAC, 50 Hz Operating temperature -20 to 60C, R.H. < 95% Supplied by L1 and L2 Storage temperature -30 to 80C, R.H. < 95% Housing Dimensions 17.5 x 90 x 67.2 mm General Specifications Material PA66 or Noryl Weight Approx. 100 g Power ON delay 1 s 0.5 s Screw terminals Reaction time Tightening torque Incorrect phase sequence or L1, L2, L3, N Min. 0.5 Nm, Max. 1.1 Nm total phase loss < 200 ms 15, 16, 18, Z1, Z2 Min. 0.4 Nm, Max. 0.8 Nm (input signal variation from Product standard EN 60255-1: 2010 -20% to +20% or from Approvals UL +20% to -20% of set value) Alarm ON delay < 200 ms (delay < 0.1 s) CE Marking L.V. Directive 2006/95/EC Alarm OFF delay < 200 ms (delay < 0.1 s) EMC Directive 2004/108/EC Immunity According to EN 60255-26 Accuracy (15 min warm-up time) According to EN 61000-6-2 Temperature drift 1000 ppm/C Emissions According to EN 60255-26 Delay ON alarm 10% on set value 50 ms According to EN 61000-6-3 Repeatability 0.5% on full-scale Mode of Operation Connected to the 3 phases If one or more phase-phase Only 200 ms delay occurs. Example 2 (and neutral) DPB51 oper- or phase-neutral voltages The failure is indicated by the (load monitoring) ates when all 3 phases are exceeds the upper set level red LED flashing 5 Hz during The relay releases in case of present at the same time, the or drops below the lower set the alarm condition. interruption of one or more phase sequence is correct level, the red LED starts phases, when one or more and the phase-phase (or flashing 2 Hz and the output Example 1 voltages drop below the low- phase-neutral) voltage levels relay releases after the set (mains network monitoring) er set level or exceed the are within set limits. time period. If the phase The relay monitors over and upper set level. sequence is wrong or one under voltage, phase loss phase is lost, the output and correct phase sequence. relay releases immediately. Function/Range/Level and Time Delay Setting Centre bottom knob Selection of monitored (DELAY): voltage: Setting of delay on alarm Connecting the terminals Nominal Ph-Ph voltage Nominal Ph-N voltage time on absolute scale (0.1 Z1 and Z2: (delta connections) (star connections) to 30 s). No connection: phase-phase. 480 VAC 277 VAC Lower knob (see on the Connected: phase-neutral. 415 VAC 240 VAC right): 400 VAC 230 VAC Setting of nominal delta Selection of range, level 380 VAC 220 VAC voltage. and time delay: 240 VAC 139 VAC Upper knob ( ): 220 VAC 127 VAC Setting of lower level on relative scale. 208 VAC 120 VAC Centre top knob ( ): Setting of upper level on relative scale. 2 Specifications are subject to change without notice (03.09.14)