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 Ordering Key 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. Housing Function Type Item number Output Power supply Range Owing to the built-in latch function, the ON-position of the relay output can be maintained. The red LED indicates the alarm status. DUA 01 C B23 500V Type Selection Mounting Output Supply: 24 VDC Supply: 48 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 748 500V PUA 01 C 748 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) DUA01 PUA01 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 Max. voltage for 1 s 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 Terminals Y1, Y2 Terminals 5, 7 Int. resist. Max. volt. > 500 kΩ > 500 kΩ > 500 kΩ > 500 kΩ > 500 kΩ 600 V 600 V 600 V 600 V 600 V 1000 V Max. curr. AAC rms 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 Dielectric voltage ≥ 2 kVAC (rms) 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 (26.09.06) 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: 748: B48: Reaction time Alarm ON delay Overvoltage cat. III (IEC 60664, IEC 60038) Alarm OFF delay 24 VDC ± 20%, insulated 48 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 B23: Dielectric voltage Supply to input Supply to output Input to output Rated operational power AC DC 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 DUA01 PUA01 Weight Screw terminals Tightening torque Approvals CE Marking EMC Immunity Emission < 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 94 mm Approx. 150 g Max. 0.5 Nm acc. to IEC 60947 UL, CSA (except 748) Yes Electromagnetic Compatibillity According to EN 61000-6-2 According to EN 61000-6-3 Mode of Operation Range - Level Setting 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. Adjust the measuring range setting the DIP switches 1 to 4 as shown below. To access the DIP switches open the grey plastic cover using a screwdriver as shown below. 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. 2 Example 2 (MI CT) (no connection between terminals Z1, Y1 or 8, 9) 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. Example 3 (MP CT) (no connection between terminals Z1, Y1 or 8, 9 - latch function disabled) 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. 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 Measuring range OFF ON OFF OFF ON OFF OFF OFF OFF OFF OFF OFF ON OFF ON OFF ON OFF OFF ON 0.4 to 4 Vp 2 to 20 VAC/DC 5 to 50 VAC/DC 20 to 200 VAC/DC 50 to 500 VAC/DC Specifications are subject to change without notice (26.09.06) DUA01, PUA01 Operation Diagrams Wiring Diagrams DUA01 Specifications are subject to change without notice (26.09.06) PUA01 3 DUA01, PUA01 Dimensions DIN-rail Plug-in 94 80 63 28.5 4 90 36 63 99.5 83.5 80 22.5 28.5 Specifications are subject to change without notice (26.09.06)