Crouzet 84873023 Data Sheet
Phase control
MWG
MWUA
MWU MWA
Part numbers
Product adaptations
Accessories
General characteristics
➜ Multi-function phase control relay - 17.5 mm
■ Control of 3-phase networks: phase sequence, phase
failure, imbalance (asymmetry), over and
undervoltage
■ Range includes mono-function product and multi-
function product
■ Multi-voltage from 3 x 208 to 3 x 480 V
■ Controls its own supply voltage
■ True RMS measurement
■ LED status indication
Type Functions Nominal voltage (V) Code
MWG Phase sequence and failure
MWU Phase sequence, failure, undervoltage
MWA Phase sequence, failure and imbalance
MWUA Phase sequence, failure, imbalance, under and overvoltage in
window mode
a
3 x 208
3 x 208
3 x 208
3 x 208
➞ 3 x 480 V
➞ 3 x 480 V
➞ 3 x 480 V
➞ 3 x 480 V
a
a
a
a
■ Customisable colours and labels
■ Single voltage in the generic range
■ Adjustable fixed hysteresis
■ Fixed or adjustable time delay except for MWG
Dedicated adaptation on MWG:
■ Adjustable regeneration rate
Dedicated adaptation on MWU:
■ Fixed undervoltage threshold in the generic range
Dedicated adaptation on MWA:
■ Fixed asymmetry threshold in the generic range
Dedicated adaptations to MWUA:
■ Fixed undervoltage threshold in the generic range
■ Fixed overvoltage threshold in the generic range
■ Fixed asymmetry threshold in the generic range or adjustable 5➞ 25 %
84873022
84873023
84873024
84873025
Description Code
Removable sealable cover for 17.5 mm casing
Supply
Supply voltage Un
Voltage supply tolerance -12% / +10%
Operating range
a
supply voltage frequency
Galvanic isolation of power supply/measurement No
Power consumption at Un
Immunity from micro power cuts 10 ms
3 x 208
➞ 3 x 480 V
183
➞ 528 V
50 / 60 Hz ±10%
1.8 VA in
a
MWG / MWU / MWA / MWUA
a
*
a
84800000
18
www.crouzet.com
General characteristics
Inputs and measuring cicuit
Measurement ranges
183
Selection of phase-phase nominal voltage Un 208 - 220 - 380 - 400 - 415 - 440 - 480 V
Frequency of measured signal 50
➞ 60 Hz ± 10%
Max. measuring cycle time 150 ms/True RMS measurement
Voltage threshold adjustment 2
➞ 20% of selected Un
(-2 to -12% across the 3 x 208 V
the 3 x 220 V
Voltage threshold hysteresis 2% of fixed Un
Asymmetry threshold hysteresis 2% of fixed Un
Asymmetry threshold adjustment 5 to 15% of fixed Un
Display precision ± 3% of the displayed value
Repetition accuracy with constant parameters ± 0.5%
Measuring error with voltage drift < 1% across the whole range
Measuring error with temperature drift < 0.05%/ °C
Maximum regeneration (phase failure) 70%
Timing
Delay on threshold crossing 0.1 to 10 s (0, +10%)
Repetition accuracy with constant parameters ± 3%
Reset time 1500 ms
Delay on pick-up 500 ms
Alarm on delay time max. < 200 ms
Output
Type of output 1 single pole changeover relay
Type of contacts No cadmium
Maximum breaking voltage
Max. breaking current
Min. breaking current
Electrical life (number of operations)
Breaking capacity (resistive)
250 V
5 A
10 mA / 5 V
1 x 10
1250 VA
Maximum rate 360 operations/hour at full load
Operating categories acc. to IEC 60947-5-1 AC 12, AC 13, AC 14, AC 15, DC 12, DC 13, DC 14
Mechanical life (operations)
30 x 10
Insulation
Nominal insulation voltage IEC 60664-1 400 V
Insulation coordination (IEC 60664-1 / 60255-5) Overvoltage category III: degree of pollution 3
Rated impulse withstand voltage IEC 60664-1/60255-5 4 KV (1.2 / 50 µs)
Dielectric strength IEC 60664-1/60255-5 2 kV AC 50 Hz 1 min
Insulation resistance IEC 60664-1 / 60255-5
> 500 MΩ / 500 V
General characteristics
Display power supply Green LED
Display relay Yellow LED - This LED flashes during the threshold delay
Casing 17.5 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 60695-2-11 & NF EN 60695-2-11
Protection (IEC 60529) Terminal block: IP20
Casing: IP30
Weight 80 g
Connecting capacity IEC 60947-1
Rigid: 1 x 4
1 x 11 AWG - 2 x 14 AWG
Flexible with ferrules: 1 x 2.5
1 x 14 AWG - 2 x 16 AWG
Max. tightening torques IEC 60947-1 0.6 Nm
Operating temperature IEC 60068-2 -20
Storage temperature IEC 60068-2 -40
➞ +50°C
➞ +70°C
Humidity IEC 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 60068-2-6 5 g
Standards
Marking CE (LVD) 73/23/EEC - EMC 89/336/EEC
Product standard NF EN 60255-6 / CEI 60255-6 / UL 508 / CSA C22.2 N°14
Electromagnetic compatibility Immunity EN 61000-6-2/IEC 61000-6-2
Certifications UL, CSA, GL
Emission EN 61000-6-4/EN 61000-6-3
IEC 61000-6-4/IEC 61000-6-3
Emission EN 55022 class B
pending
Conformity with environmental directives RoHS, WEEE
Comments
* 3-phase mains with earth
a
➞ 528 V
a
range / 2 to 10% across the 3 x 480 V a range)
z
z
c
5
a
6
c
2
- 2 x 2.52 mm2
➞ 1 / 5.3 ➞ 8.8 Lbf.In
a
range / -2 to -17% across
2
- 2 x 1.52 mm
2
19
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