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Monitoring Relays 1-Phase AC/DC Over Voltage - AC Over Current Types DUA01, PUA01
* 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
DUA01
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. Owing to the built-in latch function, the ON-position of the relay output can be maintained. The red LED indicates the alarm status.
Ordering Key
Housing Function Type Item number Output Power supply Range
DUA 01 C B23 500V
Type Selection
Mounting DIN-rail Plug-in Output SPDT SPDT Supply: 24 VDC DUA 01 C 724 500V PUA 01 C 724 500V Supply: 48 VDC DUA 01 C 748 500V PUA 01 C 748 500V Supply: 24/48 VAC DUA 01 C B48 500V PUA 01 C B48 500V Supply: 115/230 VAC 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 Terminals Y1, Y2 Terminals 5, 7 Int. resist. > 500 k > 500 k > 500 k > 500 k > 500 k AAC rms 0.5 to 5 A 2 to 20 A 10 to 100 A 50 to 500 A Max. volt. 600 V 600 V 600 V 600 V 600 V 1000 V Max. curr. 20 AAC 50 AAC 250 AAC 750 AAC
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 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 = 1) 7200 operations/h
Operating frequency Dielectric strength Dielectric voltage 2 kVAC (rms) Rated impulse withstand volt. 4 kV (1.2/50 s)
Terminals Z1, Y1 Terminals 8, 9 > 10 k < 500 > 500 ms
Specifications are subject to change without notice (26.09.06)
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DUA01, PUA01
Supply Specifications
Power supply Rated operational voltage through terminals: A1, A2 or A3, A2 (DUA01) 2, 10 or 11, 10 (PUA01) 724: 748: B48: B23: Dielectric voltage Supply to input Supply to output Input to output Rated operational power AC DC Overvoltage cat. III (IEC 60664, IEC 60038)
General Specifications
Reaction time Alarm ON delay Alarm OFF delay < 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 60C, R.H. < 95% -30 to 80C, 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
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 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
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 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.
Range - Level Setting
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. 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 k 25%: 47 k 50%: 22 k 75%: 15 k Latch: < 500 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
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Specifications are subject to change without notice (26.09.06)
DUA01, PUA01
Operation Diagrams
Wiring Diagrams
DUA01
PUA01
Specifications are subject to change without notice (26.09.06)
3
DUA01, PUA01
Dimensions
DIN-rail
22.5 99.5
Plug-in
94
36
90
83.5
80
63
28.5
80
28.5
4
Specifications are subject to change without notice (26.09.06)
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