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| Monitoring Relays 3-Phase Sequence and Phase Loss Types DPA51, DPA71 * 3-phase monitoring relay for phase sequence and phase loss * Detects when all phases are present and have the correct sequence * Measures own power supply * Power supply range: 208 to 480 VAC (15%) * Output: 5 A SPDT relay (DPA51) or 5 A DPDT relay (DPA71) normally energized * For mounting on DIN-rail in accordance with DIN/EN 50 022 * 17.5 mm (DPA51) or 35.5 mm (DPA71) DIN-rail housing (DIN 43880) * LED indication for relay and power supply ON DPA51 DPA71 Product Description 3-Phase relay for detection of incorrect phase sequence, total and partial phase loss. Supply range from 208 to 480 VAC covered by three multivoltage relay. For mounting on DIN-rail. Housing 17.5 mm wide for SPDT version and 35.5 mm for DPDT version, suitable both for back and front panel mounting. The device detects regenerated voltage up to 85% of the nominal voltage (phasephase). Ordering Key Housing Function Type Item number Output Power supply DPA 51 C M44 Type Selection Mounting DIN-rail DIN-rail Output SPDT DPDT Supply: 208 to 480 VAC DPA 51 C M44 DPA 71 D M23 DPA 71 D M48 Supply: 208 to 240 VAC Supply: 380 to 480 VAC Input Specifications Input L1, L2, L3 Measuring range 208 to 480 VAC (DPA51CM44) 208 to 240 VAC (DPA71DM23) 380 to 480 VAC (DPA71DM48) ON-level Terminals L1, L2, L3 Measures on own supply 177 to 550 VAC 177 to 275 VAC 323 to 550 VAC > 85% of the phase- phase voltage Output Specifications Output Rated insulation voltage Contact ratings (AgSnO2) DPA51 (SPDT): Resistive loads AC 1 DC 12 Small inductive loads AC 15 DC 13 DPA71 (DPDT) AC 1 Resistive loads Small inductive loads AC 15 DC 13 Mechanical life Electrical life SPDT or DPDT relay, N.E. 250 VAC 5 A @ 250 VAC 5 A @ 24 VDC 2.5 A @ 250 VAC 2.5 A @ 24 VDC 5 A @ 250 VAC 3 A @ 250 VAC 3 A @ 24 VDC 30 x 106 operations 105 operations (at 5 A, 250 V, cos = 1) 7200 operations/h Operating frequency Dielectric strength Dielectric voltage 2 kVAC (rms) Rated impulse withstand volt. 4 kV (1.2/50 s) Specifications are subject to change without notice (17.07.06) 1 DPA51, DPA71 Supply Specifications Power supply Rated operational voltage through terminals: L1, L2, L3 DPA51CM44 DPA71DM23 DPA71DM48 Rated operational power DPA51 DPA71 Overvoltage cat. II (IEC 60664, IEC 60038) 208 to 480 VAC 15%, 45 to 65 Hz 208 to 240 VAC 15%, 45 to 65 Hz 380 to 480 VAC 15%, 45 to 65 Hz 13 VA @ 400 VAC, 50 Hz Supplied by L2 and L3 10 VA @ 400 VAC, 50 Hz 6 VA @ 230 VAC, 50 Hz Supplied by L2 and L3 General Specifications Reaction time Alarm ON delay Alarm OFF delay Accuracy Temperature drift Repeatability Indication for Power supply ON Relay ON Environment Degree of protection Pollution degree Operating temperature (DPA51)@ Max. voltage, 50 Hz (DPA51)@ Max. voltage, 60 Hz (DPA71) Storage temperature Housing Dimensions DPA51 DPA71 Material Weight Screw terminals Tightening torque Approvals CE Marking EMC Immunity Emission < 100 ms < 300 ms (15 min warm-up time) 1000 ppm/C 0.5% on full scale LED, green LED, yellow IP 20 3 -20 to +60C, R.H. < 95% -20 to +50C, R.H. < 95% -20 to +50C, R.H. < 95% -30 to +80C, R.H. < 95% 17.5 x 81 x 67.2 mm 35.5 x 81 x 67.2 mm PA66 Approx. 75 g Max. 0.5 Nm acc. to IEC 60947 UL, CSA (DPA71 UL only) Yes Electromagnetic Compatibility According to EN 61000-6-2 According to EN 61000-6-3 Mode of Operation DPA51 and DPA71 monitor their own 3-phase power supply voltage. The relays operate when all the phases are present and the phase sequence is correct. The relays release when one phase-phase voltage drops below 85% of the other phase-phase voltages or when the phase sequence is wrong. Example 1 The relay monitors that the power supply has the correct phase sequence and that all phases are present. Example 2 The relay releases in case of interruption of one or more phases, provided that the regenerated voltage does not exceed 85% of the phase-phase voltage. Operation Diagram 2 Specifications are subject to change without notice (17.07.06) DPA51, DPA71 Wiring Diagrams Example 1 L3 L2 L1 m m<3 L2 L1 L2 L3 12 14 22 m 24 m<3 L2 11 21 L1 L2 L3 12 Example 2 L3 L2 L1 m 14 22 m 24 L3 L3 11 21 DPA51C... DPA71D... DPA71D... DPA51C... DPA71D... DPA71D... Dimensions DPA51 17.5 DPA71 67.2 18.7 35.5 67.2 18.7 81 81 45 2 2 45 Specifications are subject to change without notice (17.07.06) 3 |
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