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Monitoring Relays 3-Phase Voltage selection Type DPA55
* 3-phase monitoring relay for phase sequence * Detects if voltage is at the desired level ( 10% or 15%) * Measures own power supply * Wide power supply range: 208 to 480 VAC (15%) * Output: 5 A SPDT relay normally energized * For mounting on DIN-rail in accordance with DIN/EN 50 022 * 17.5 mm DIN-rail housing (DIN 43880) * LED indication for relay and power supply ON
Product Description
3-Phase relay for detection of incorrect mains voltage. Also detecting incorrect phase sequence and phase loss. This unit allows to stop incorrect power supply voltage when different from the desired one. Power supply range from 208 to 480 VAC plus selection of the different possible nominal voltages. For mounting on DIN-rail. Housing 17.5 mm wide suitable both for back and front panel mounting.
Ordering Key
Housing Function Type Item number Output Power supply
DPA 55 C M44
Type Selection
Mounting DIN-rail Output SPDT Supply: 208 to 480 VAC DPA 55 C M44
Input Specifications
Input L1, L2, L3 Measuring range Hysteresis Terminals L1, L2, L3 Measures on own supply 177 to 550 VAC < 3V
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, N.E. 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 8 A, 250 V, cos = 1) 7200 operations/h
Supply Specifications
Power supply Overvoltage cat. II Rated operational voltage (IEC 60664, IEC 60038) through terminals: L1, L2, L3 208 to 480 VAC 15%, 45 to 65 Hz Rated operational power 18 VA @ 400 VAC, 50 Hz Supplied by L1 and L3
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 (07.09.06)
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DPA55
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 @ Max. voltage, 50 Hz @ Max. voltage, 60 Hz Storage temperature < 100 ms < 300 ms (15 min warm-up time) 1000 ppm/C 0.5% on full scale LED, green LED, yellow IP 20 2 -20 to +60C, R.H. < 95% -20 to +50C, R.H. < 95% -30 to +80C, R.H. < 95% Housing Dimensions Material Weight Screw terminals Tightening torque Approvals CE Marking EMC Immunity Emission 17.5 x 81 x 67.2 mm PA66 Approx. 80 g Max. 0.5 Nm acc. to IEC 60947 UL, CSA Yes Electromagnetic Compatibility According to EN 61000-6-2 According to EN 61000-6-3
Mode of Operation
DPA55 monitors its own 3- phase power supply. The relay operates when all the phases are present, the phase sequence is correct and each phase-phase voltage is within the desired tolerance ( 10% or 15%). Example 1 The relay monitors that the power supply is the correct one for the required equipment. Example 2 The relay releases in case of incorrect phase sequence or when the voltage is outside the set limits.
Range setting
Select the proper nominal voltage level using DIPswitches as shown below. Voltage window ON: 15 % OFF: 10 % Measuring range 208 VAC 220 VAC 230 VAC 240 VAC 380 VAC 400 VAC 415 VAC 480 VAC SW2 OFF OFF OFF OFF ON ON ON ON SW3 OFF OFF ON ON OFF OFF ON ON SW4 OFF ON OFF ON OFF ON OFF ON
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Specifications are subject to change without notice (07.09.06)
DPA55
Operation Diagrams
L1 L2 L3
Relay ON
L2 L1 L3
L3 L2 L1
L1 L2 L3
Set level Power supply Relay ON
Voltage window
L1 - L2 L2 - L3 L3 - L1
Wiring Diagrams
Example 1 Example 2
Dimensions
17.5 67.2
18.7
81
2
45
Specifications are subject to change without notice (07.09.06)
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