HWUA

KEY FEATURES

  • Control of 3-phase networks : phase sequence, phase failure, asymmetry, under and overvoltage with independent settings
  • Multi-function/Multi-voltage product
  • Controls its own supply voltage
  • True RMS measurement
  • LED status indication
FunctionsNominal voltage (V)OutputCode
Phase sequence, phase failure, asymmetry, under/overvoltage with independent settings3 x 220 →3 x 480 V∿*1 single pole changeover relay84873026

Specifications


Supply voltage Un 3 x 220 →3 x 480 V ∿ *
Voltage supply tolerance -12 % / +10 %
Operating range 194 →528 V
∿ supply voltage frequency 50 / 60 Hz ± 10 %
Galvanic isolation of power supply/measurement No
Power consumption at Un 3,9 VA in AC
Immunity from micro power cuts 10 ms

Measurement ranges 194 →528 V
Selection of phase-phase nominal voltage Un 220 - 380 - 400 - 415 - 440 - 480 V
Frequency of measured signal 50 →60 Hz ± 10 %
Max. measuring cycle time 140 ms/True RMS measurement
Voltage threshold adjustment 2 →20 % of selected Un (+2 →+10 % across the 3 x 480 V ∿ range -12 to -2 % across the 3 x 220 V ∿ range
Fixed hysteresis Under or overvoltage, asymmetry : 2 % of the Un value of the selected network
Asymmetry threshold hysteresis Asymmetry : 2 % of the Un value of the selected network
Asymmetry threshold adjustment 5 →15 % of selected Un
Display precision ± 3 % of the displayed value
Repetition accuracy with constant parameters ± 0,5 %
Measuring error with voltage drift < 1 %
Measuring error with temperature drift 0,05 %/ °C

Delay on thresold crossing 0,1 →10s (0, +10 %)
Repetition accuracy with constant parameters ± 0,3 %
Reset time 1,5 s
Delay on pick-up ≤ 650 ms
Alarm on delay time max. < 200 ms

Type of output 1 double changeover relay
Type of contacts No cadmium
Maximum breaking voltage 250 V ∿/⎓
Max. breaking current 5 A ∿/⎓
Min. breaking current 10 mA / 5 V ⎓
Electrical life (number of operations) 1 x 105
Breaking capacity (resistive) 1250 VA ∿
Maximum rate 360 operations/hour at full load
Operating categories acc. to IEC/EN 60947-5-1 AC 12, AC 13, AC 14, AC 15, DC 12, DC 13, DC 14
Mechanical life (operations) 30 x 106

Nominal insulation voltage IEC/EN 60664-1 400 V
Insulation coordination (IEC/EN 60664-1) Overvoltage category III : degree of pollution 3
Rated impulse withstand voltage (IEC/EN 60664-1) 4 KV (1,2 / 50 μs)
Dielectric strength (IEC/EN 60664-1) 2 kV AC 50 Hz 1 min
Insulation resistance (IEC/EN 60664-1) > 500 MΩ / 500 V⎓

Display power supply Green LED Extinguished in the event of phase failure
Display relay Yellow LED Flashes during the threshold crossing delay
"Fault" indication Yellow LED Lights up in the event of asymmetry Flashes in the event of under or overvoltage
Casing 35 mm
Mounting On 35 mm symmetrical DIN rail, IEC/EN 60715
Mounting position All positions
Material : enclosure plastic type VO to UL94 standard Incandescent wire test according to IEC/EN 60695-2-11
Protection (IEC/EN 60529) Terminal block : IP 20 Casing : IP 30
Weight 130 g
Connecting capacity IEC/EN 60947-1 Rigid : 1 x 42 - 2 x 2.52 mm2 1 x 11 AWG - 2 x 14 AWG Flexible with ferrules : 1 x 2.52 - 2 x 1.52 mm2 1 x 14 AWG - 2 x 16 AWG
Max. tightening torques IEC/EN 60947-1 0,6 →1 Nm / 5,3 →8,8 Lbf.In
Operating temperature IEC/EN 60068-2 -20 →+50 °C
Storage temperature IEC/EN 60068-2 -40 →+70 °C
Humidity IEC/EN 60068-2-30 2 x 24 hr cycle 95 % RH max. without condensation 55 °C
Vibrations according to IEC/EN60068-2-6 10 →150 Hz, A = 0.035 mm
Shocks IEC/EN 60068-2-6 5 g

Product standard IEC/EN 50178
Electromagnetic compatibility (EMC) IEC/EN 61000-6-1, IEC/EN 61000-6-2, IEC/EN 61000-6-3, IEC/EN 61000-6-4
Certifications CE, UL, CSA, GL
Conformity with environmental directives RoHS

* 3-phase mains with earth

Technical sketches

The HWUA 3-phase network control relay monitors : - The correct sequence of phases L1, L2, L3 - Total phase failure - Undervoltage and overvoltage from 2 to 20 % of Un - Asymmetry rate from 5 to 15 % of Un - Faults are signalled via LEDs, distinguishing the origin of the fault. If a fault persists for longer than the threshold crossing delay configured by the user, both output relays open and LED R is extinguished.

HWUA - Failure, phase sequence and asymmetry

HWUA - Failure, phase sequence and asymmetry
Legend
1-
Phase L1
2-
Phase L2
3-
Phase L3
4-
Asymmetry threshold
5-
Hysteresis
6-
Relay
7-
Delay on threshold crossing (Tt)
Set the selector switch to the 3-phase network voltage Un. The position of this selector switch is only taken into account when the unit is powered up. If the switch position changes while the unit is operating, all the LEDs flash but the product continues to work normally with the voltage selected on energisation prior to the change of position. The LEDs return to their normal state if the switch is reset to its initial position defined before the last energisation. The relay controls :   - correct sequencing of the three phases, - failure of one of the three phases (U measured < 0.7 x Un), - asymmetry, adjustable from 5 to 15 % of Un, - undervoltage adjustable from - 2 to - 20 % of Un, (-2 to -12 %  for the 220 V range) and overvoltage adjustable from +2 to +20 %  (+2 to +10 %  over the 3 x 480 V range due to the maximum voltage 528 V ∿). In the event of a phase sequence or failure fault, the relay opens instantaneously. In the event of an asymmetry or voltage fault, the relay opens at the end of the time delay set by the user. When the unit is powered up with a measured fault, the relay stays open.

UWUA - Under/Overvoltage

UWUA - Under/Overvoltage
Legend
1-
Overvoltage
2-
Hysteresis
3-
Undervoltage
4-
Phases L1, L2, L3
5-
Relay
6-
Delay on threshold crossing (Tt)

HWUA

HWUA

HWUA

HWUA
Legend
1-
100 mA fast-blow fuse
PH RMC2 HWUA

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