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| Monitoring Relays DC Under Voltage Type DUA52 * * * * * * * DC undervoltage monitoring relay Measuring if power supply is below the set level Measures on own power supply Measuring ranges: 8 - 28 V DC and 38 - 58 V DC Adjustable hysteresis: 4 to 50% Output: 5 A SPDT NE relay For mounting on DIN-rail in accordance with DIN/EN 50 022 * 17.5 mm housing (DIN 43880) * LED indication for relay and power supply ON Product Description DUA52 is a voltage monitoring relay that measure its own power supply. The measuring ranges are 8-28 VDC and 3858 VDC. It has separate potentiometers for setpoint and hysteresis. Typical applications are monitoring of backup batteries, batteries on diesel generator sets and the like. Ordering Key Housing Function Type Item number Output Power supply DUA 52 C 724 Type Selection Mounting DIN-rail DIN-rail Output SPDT SPDT Measuring range 8 to 28 VDC 38 to 58 VDC Supply : 12/24 VDC DUA 52 C 724 DUA 52 C 748 Supply: 48 VDC Input Specifications Input (voltage level) Terminals A1, A2 Measures on own power supply Level 38 to 58 VDC 8 to 28 VDC 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 8 A, 250 V, cos = 1) 7200 operations/h Measuring ranges Direct 48 VDC 12 to 24 VDC 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: 724 A1 and A2 748 Dielectric voltage Dielectric voltage Supply to output Rated operational power Overvoltage cat. III (IEC 60664, IEC 60038) 8 to 28 VDC 38 to 58 VDC None 2 kV 1.5 W Specifications are subject to change without notice (09.10.06) 1 DUA52 General Specifications Power ON delay Reaction time Alarm ON delay Alarm OFF delay Accuracy Temperature drift Alarm delay Repeatability Indication for Power supply ON Output relay ON < 200 ms (input signal variation from -20% to +20% or from +20% to -20% of set value) < 200 ms < 200 ms (15 min warm-up time) 1000 ppm/C 10% on set value 50 ms 0.5% on full-scale LED, green LED, yellow Environment Degree of protection Pollution degree Operating temperature Storage temperature Housing Dimensions Material Weight Screw terminals Tightening torque Approvals CE Marking IP 20 3 -20 to 60C, R.H. < 95% -30 to 80C, R.H. < 95% 17.5 x 81 x 67.2 mm PA 66 Approx. 75 g Max. 0.5 Nm acc. to IEC 60947 UL, CSA Yes Mode of Operation DUA52 monitors the DC value of its own power supply. The output is energized when the measured voltage is rising above the setpoint plus hysteresis, and is deenergized when the measured voltage drops below the setpoint value. Range and Level Setting Selection of level: Centre knob: Setting of level on absolute scale. Lower knob: Setting of hysteresis on relative scale Operation Diagram Wiring Diagram Hysteresis Setpoint Relay ON Dimensions 17.5 67.2 18.7 81 2 2 45 Specifications are subject to change without notice (09.10.06) |
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