Monitoring Relays 1-Phase AC/DC Over Voltage - AC Over Current Types DUA01, PUA01 DUA01 • AC/DC over voltage monitoring relay • Selection of measuring range by DIP-switches • Measuring ranges: 2 to 20 VAC/DC, 5 to 50 VAC/DC, 20 to 200 VAC/DC, 50 to 500 VAC/DC, 0.4 to 4 Vp AC • Adjustable voltage limit on relative scale • Adjustable hysteresis • Programmable latching at set level • Output: 8 A SPDT relay normally de-energized • For mounting on DIN-rail in accordance with DIN/EN 50 022 (DUA01) or plug-in module (PUA01) • 22.5 mm Euronorm housing (DUA01) or 36 mm plug-in module (PUA01) • LED indication for relay and power supply ON • Galvanically separated power supply PUA01 Product Description DUA01 and PUA01 are precise AC/DC over voltage monitoring relays. They can also be used as 1-phase or 3phase over current monitoring relays when connected with MI or MP current transformers. Ordering Key Owing to the built-in latch function, the ON-position of the relay output can be maintained. The red LED indicates the alarm status. Housing Function Type Item number Output Power supply Range DUA 01 C B23 500V Type Selection Mounting Output Supply: 24 VDC Supply: 24/48 VAC Supply: 115/230 VAC DIN-rail Plug-in SPDT SPDT DUA 01 C 724 500V PUA 01 C 724 500V DUA 01 C B48 500V PUA 01 C B48 500V DUA 01 C B23 500V PUA 01 C B23 500V Input Specifications Input (voltage level) Measuring ranges Direct Selectable by DIP-switches 2 to 20 VAC/DC 5 to 50 VAC/DC 20 to 200 VAC/DC 50 to 500 VAC/DC 0.4 to 4 Vp AC MI and MP CT ranges 1-ph.: 3-ph.: MI 5 MP 3005 MI 20 MP 3020 MI 100 MP 3100 MI 500 MP 3500 Note: The input voltage cannot raise over 300 VAC/DC with respect to ground (PUA01 only) Contact input DUA01 PUA01 Disabled Enabled Latch disable Output Specifications DUA01: Terminals Y1, Y2 PUA01: Terminals 5, 7 Int. resist. Max. volt. > 500 kΩ 600 V > 500 kΩ 600 V > 500 kΩ 600 V > 500 kΩ 600 V > 500 kΩ 600 V Max. voltage for 1 s: 1000 V AAC rms Max. curr. 0.5 to 5 A 2 to 20 A 10 to 100 A 50 to 500 A 20 AAC 50 AAC 250 AAC 750 AAC 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 µ 8 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 ϕ = 1) ≤ 7200 operations/h Operating frequency Dielectric strength ≥ 2 kVAC (rms) Dielectric voltage Rated impulse withstand volt. 4 kV (1.2/50 µs) Terminals Z1, Y1 Terminals 8, 9 > 10 kΩ < 500 Ω > 500 ms Specifications are subject to change without notice (21.10.00) 1 DUA01, PUA01 Supply Specifications General Specifications Power supply Rated operational voltage through terminals: A1, A2 or A3, A2 (DUA01) 2, 10 or 11, 10 (PUA01) 724: B48: Reaction time Alarm ON delay B23: Dielectric voltage Supply to input Supply to output Input to output Rated operational power AC DC Overvoltage cat. III (IEC 60664, IEC 60038) Alarm OFF delay 24 VDC ± 20%, insulated 24/48 VAC ± 15% 45 to 65 Hz, insulated 115/230 VAC ± 15% 45 to 65 Hz, insulated DC supply AC supply 2 kV 4 kV 4 kV 4 kV 4 kV 4 kV 4 VA 2W Accuracy Temperature drift Repeatability Indication for Power supply ON Output relay ON Environment Degree of protection Pollution degree Operating temperature Storage temperature Housing dimensions DIN-rail version Plug-in version Weight Screw terminals Tightening torque < 100 ms (voltage rising from -20% to +20% set value) < 300 ms (voltage decreasing from +20% to -20% set value) (15 min warm-up time) ± 1000 ppm/°C ± 0.5% on full-scale LED, green LED, red (EN 60529) IP 20 3 (DUA01), 2 (PUA01) -20 to 60°C, R.H. < 95% -30 to 80°C, R.H. < 95% 22.5 x 80 x 99.5 mm 36 x 80 x 87 mm Approx. 150 g CE-Marking Max. 0.5 Nm acc. to IEC 60947 Yes Example 2 (MI CT) (no connection between terminals Z1, Y1 or 8, 9) (no connection between terminals Z1, Y1 or 8, 9 - latch function disabled) The relay operates when the current flowing through the CT exceeds the set level. It releases when the current drops min. 4% below the set level (see hysteresis) or when power supply is interrupted. The relay operates when the maximum current flowing through the CT exceeds the set level. It releases when the maximum current drops min. 4% below the set level (see hysteresis) or when power supply is interrupted. Mode of Operation DUA01 and PUA01 monitor both AC and DC over voltage. When connected with MI or MP current transformer (using the 0.4 - 4 Vp range) they can monitor 1-phase or 3-phase AC currents up to 500 A. Example 1 (connection between terminals Z1, Y1 or 8, 9 - latch function enabled) The relay operates and latches in operating position when the measured value exceeds the set level. Provided that the voltage has dropped min. 4% below the set point (see hysteresis), the relay releases when the interconnection between terminals Z1, Y1 or 8, 9 is interrupted or the power supply is interrupted as well. Example 3 (MP CT) Range - Level Setting Selection of measuring range: DIP-switch selector (1 to 4) 1 234 ON 2 2 to 20 VAC/DC 5 to 50 VAC/DC 20 to 200 VAC/DC 50 to 500 VAC/DC 0.4 to 4 Vp AC Centre knob: Setting of voltage on relative scale: from 10 to 110% of the full-scale value. Hysteresis: Approx. 4% of set value, it can be extended by inserting a resistor between terminals Z1, Y1 or 8, 9. Approx. resistor values: 10%: 180 kΩ 25%: 47 kΩ 50%: 22 kΩ 75%: 15 kΩ Latch: < 500 Ω Specifications are subject to change without notice (21.10.00) DUA01, PUA01 Operation Diagrams Power supply Power supply Latch ON Set level Set level Hysteresis Hysteresis Relay ON Relay ON Wiring Diagrams Example 1 Example 1 Latch/Hysteresis 24 VDC (+) 48/230 VAC 24/115 VAC adjustment µ L Z1 PE Ð ~ Y1 + ~ Y2 24 VDC (+) 48/230 VAC 24/115 VAC Latch/Hysteresis adjustment A1 A3 14 9 U PE A2 µ L 12 11 N (-) Ð ~ 7 + ~ 5 2 8 4 11 3 U 10 1 N (-) Example 2 Example 2 24 VDC (+) 48/230 VAC 24/115 VAC Hysteresis adjustment µ L Z1 PE ~ Y1 ~ Y2 A1 24 VDC (+) 48/230 VAC 24/115 VAC Hysteresis adjustment A3 12 9 U PE A2 µ L 14 11 ~ 7 ~ 5 8 2 11 4 3 U 10 N (-) 1 N (-) Example 3 Example 3 24 VDC (+) 48/230 VAC 24/115 VAC Hysteresis adjustment µ L Z1 PE ~ Y1 ~ Y2 A1 24 VDC (+) 48/230 VAC 24/115 VAC Hysteresis adjustment A3 12 9 PE U A2 µ L 14 11 N (-) DUA01 Specifications are subject to change without notice (21.10.00) ~ 7 ~ 5 8 2 11 4 3 U 10 1 N (-) PUA01 3