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Monitoring Relays True RMS 3-Phase, 3-Phase+N, Multi-function Type DPB71
* 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 voltages are within the set limits * Upper and lower limits separately adjustable * Measures on own power supply * Selection of measuring range by DIP-switches * 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 * 35.5 mm DIN-rail housing * LED indication for relay, alarm and power supply ON
Product Description
3-phase or 3-phase+neutral line voltage monitoring relay for phase sequence, phase loss, over and under voltage (separately adjustable set points) with built-in time delay function. Supply ranges from 208 to 480 VAC covered by two multivoltage relays. 35.5 mm wide housing suitable both for back and front panel mounting.
Ordering Key
Housing Function Type Item number Output Power supply
DPB 71 C M23
Type Selection
Mounting DIN-rail Output SPDT Supply: 208 to 240 VAC DPB 71 C M23 Supply: 380 to 480 VAC DPB 71 C M48
Input Specifications
Input L1, L2, L3, N Note: Connect the neutral only if it is intrinsically at the star centre Measuring ranges 208 to 240 VAC 380 to 480 VAC Ranges Upper level Lower level Terminals L1, L2, L3, N Measure on own supply
Output Specifications
Output Rated insulation voltage Contact ratings (AgSnO2) Resistive loads AC 1 DC 12 Small inductive loads AC 15 DC 13 Mechanical life Electrical life SPDT relay 250 VAC 5 A @ 250 VAC 5 A @ 24 VDC 2.5 A @ 250 VAC 2.5 A @ 24 VDC 30 x 106 operations 105 operations (at 5 A, 250 V, cos = 1) 7200 operations/h
177 to 275 VAC 323 to 550 VAC +2 to +22% of the nominal voltage -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 5% 1% Set points from 5 to 22% 2%
Operating frequency Dielectric strength Dielectric voltage 2 kVAC (rms) Rated impulse withstand volt. 4 kV (1.2/50 s)
Supply Specifications
Power supply Rated operational voltage through terminals: M23 - Delta Voltage: M48 - Delta Voltage: M48 - Star Voltage: Rated operational power DPB71CM23 DPB71CM48 Overvoltage cat. III (IEC 60664, IEC 60038) L1, L2, L3, N 208 to 240 VAC 15% 45 to 65 Hz 380 to 480 VAC 15% 45 to 65 Hz 220 to 277 VAC 15% 45 to 65 Hz 13 VA @ 230 VAC, 50 Hz 13 VA @ 400 VAC, 50 Hz Supplied by L1 and L3
Specifications are subject to change without notice (23.10.06)
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DPB71
General Specifications
Power ON delay Reaction time Incorrect phase sequence or total phase loss Voltage level Alarm ON delay Alarm OFF delay Accuracy Temperature drift Delay ON alarm Repeatability Indication for Power supply ON Alarm ON Output relay ON 1 s 0.5 s or 6 s 0.5 s Environment Degree of protection Pollution degree Operating temperature Storage temperature Housing Dimensions Material Weight Screw terminals Tightening torque Approvals CE Marking EMC Immunity Emissions IP 20 3 -20 to 60C, R.H. < 95% -30 to 80C, R.H. < 95% 35.5 x 81 x 67.2 mm PA66 Approx. 100 g Max. 0.5 Nm according to IEC 60947 UL, CSA Yes Electromagnetic Compatibility According to EN 61000-6-2 According to EN 61000-6-3
< 200 ms (input signal variation from -20% to +20% or from +20% to -20% of set value) < 200 ms (delay < 0.1 s) < 200 ms (delay < 0.1 s) (15 min warm-up time) 1000 ppm/C 10% on set value 50 ms 0.5% on full-scale LED, green LED, red (flashing 2 Hz during delay time) LED, yellow
Mode of Operation
Connected to the 3 phases (and neutral) DPB71 operates when all 3 phases are present at the same time, the phase sequence is correct and the phase-phase (or phase-neutral) voltage levels are within set limits. If one or more phase-phase or phase-neutral voltages exceeds the upper set level or drops below the lower set level, the red LED starts flashing 2 Hz and the output relay releases after the set time period. If the phase sequence is wrong or one phase is lost, the output relay releases immediately. Only 200 ms delay occurs. The failure is indicated by the red LED flashing 5 Hz during the alarm condition. Example 1 (mains network monitoring) The relay monitors over and under voltage, phase loss and correct phase sequence. Example 2 (load monitoring) The relay releases in case of interruption of one or more phases, when one or more voltages drop below the lower set level or exceed the upper set level.
Function/Range/Level and Time Delay Setting
Adjust the input range setting the DIP switches 3 and 4 as shown below. Select the desired function setting the DIP switches 1 and 2 as shown below. To access the DIP swiches open the grey plastic cover as shown below. Selection of level and time delay: Upper knob: Setting of lower level on relative scale. Centre knob: Setting of upper level on relative scale. Lower knob: Setting of delay on alarm time on absolute scale (0.1 to 30 s).
Power ON delay ON: 6 s 0.5 s OFF: 1 s 0.5 s Monitored voltage ON: Phase-Neutral OFF: Phase-Phase Measuring range SW3 ON ON OFF SW4 ON OFF ON M23 Ph-Ph 208 VAC 220 VAC 230 VAC Voltage M48 Ph-Ph 380 VAC 400 VAC 415 VAC Voltage M48 Ph-N 220 VAC 230 VAC 240 VAC Voltage OFF OFF 240 VAC 480 VAC 277 VAC
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Specifications are subject to change without notice (23.10.06)
DPB71
Operation Diagrams
Wiring Diagrams
Example 1 Example 2
N L3 L2 L1 m m<3 L1 L1 L2 L3 16 18
N L3 L2 L1 m m<3 L1 L1 L2 L3 16 18
U
L3 N 15
U
L3 N 15
Dimensions
35.5 67.2 18.7
81
2
45
Specifications are subject to change without notice (23.10.06)
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