Din Rail Mount 17.5 mm Phase Sequence & Phase Failure EMWS Part number 84903020
Control of 3-phase networks : phase sequence, total phase failure
Multi
-voltage from 3 x 208 to 3 x 480 V AC
Controls its own supply voltage
True RMS measurement
LED status indication
Part numbers
Specifications
Type
Function
Nominal voltage (V)
Output
EMWS
Phase sequence, phase failure
3x208→3x480VAC
1 single pole changeover relay
Supply
AC supply voltage frequency
50 / 60 Hz
±
10 %
Galvanic isolation of power supply/measurement
No
Immunity from micro power cuts
60 ms
Inputs and measuring circuit
Frequency of measured signal
50→60Hz
±
10 %
Output
Type of contacts
No cadmium
Max. breaking current
EMWS
-
MWS2 : 5 A AC/DC
MWS : 8 A AC 250 V AC -
8 A DC 30 V DC
Maximum rate
360 operations/hour at full load
Operating categories acc. to IEC/EN 60947
-5-1
AC12, AC13, AC14, AC15, DC12, DC13
Insulation
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
μ
s)
Dielectric strength (IEC/EN 60664
-1)
2 kV AC 50 Hz 1 min.
General characteristics
Display relay
Yellow LED
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/EN 60695-2-11
Protection (IEC/EN 60529)
Terminal block : IP20
Casing : IP30
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
Standards
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
MWS, MWS2 : CE, UL, CSA
EMWS : CE, UL (cULus)
Conformity with environmental directives
RoHS
Supply
Supply voltage Un
3x208→3x480VAC*
Voltage supply tolerance
-13 % / +10 %
Operating range
183→528VAC
Maximum power consumption
20 VA
Inputs and measuring circuit
Measurement ranges
183→528VAC
Guaranteed phase failure detection threshold
< 100 VAC
Voltage threshold hysteresis
> 80 VAC (voltage must be > 180 VAC)
Unless otherwise specified, the characteristics given are applicable to all or part of the product range selected
02/11/2015 www.crouzet.com
Operating principle
EMWS : Phase controller
The relay monitors its own supply voltage.
The relay controls :
- correct sequencing of the three phases,
- total failure of one of the three phases.
When the phase sequence and voltages are correct (> 183 VAC), the output relay is closed and the yellow LED is lit.
In the event of a phase sequence or total phase failure fault (detected when one of the voltages drops below 100 V), the relay opens instantly and its LED is extinguished.
When the unit is powered up with a measured fault, the relay stays open.
Td : Power on delay
Tr : Response time after a fault has occurred
R : output relay
Display precision
±
10 V
Maximum regeneration (phase failure)
< 100 VAC
Timing
Alarm on delay time max.
100 ms
Delay on pick
-up
100 ms
Output
Type of output
1 single pole changeover relay
Maximum breaking voltage
250 VAC/DC
Max. breaking current
NO : 5A 250 VAC / 5 A 30 VDC
NC : 3A 250 VAC / 3 A 30 VDC
Min. breaking current
10 mA / 12 VDC
Breaking capacity (V resistive)
NO : 1,250 VA / 150 W
NC : 750 VA / 90 W
Mechanical life (operations)
105 cycles NO
7.104 cycles NC
Insulation
Nominal insulation voltage
300 V (correspond à un réseau 277/480 avec neutre ou 480 sans neutre)
Insulation resistance (IEC/EN 60664
-1)
> 500 M
Ω
/
250 VDC / 1min
General characteristics
"Fault" indication
Yellow LED turns off
Weight
63 g
72 g with unitary packing & manual operation
Connecting capacity IEC/EN 60947
-1
Rigid :
1x0.5→4mm
2(AWG20→AWG11)
2x0,5→2.5mm
2(AWG20→AWG14
Flexible with ferrules :
1x0,5→2.5mm
2(AWG20→AWG14)
2x0,5→1.5mm
2(AWG20→AWG16)
Max. tightening torques
IEC/EN 60947
-1
0,6→0,8N.m
/5,3→7,08 Lbf.In
Vibrations according to IEC/EN60068
-2-6
10→150Hz,A=0.35mmpeaktopeak20xcycles,1octave/min
Comments
Principles
Dimensions (mm)
EMWS
Unless otherwise specified, the characteristics given are applicable to all or part of the product range selected
02/11/2015 www.crouzet.com
Connections
EMWS
N
o
Legend
2 x F1
100 mA fast-blow fuse
Connections
CA 84903020
Unless otherwise specified, the characteristics given are applicable to all or part of the product range selected
02/11/2015 www.crouzet.com
CA 84903020
Product adaptations
Customisable colours and labels
Unless otherwise specified, the characteristics given are applicable to all or part of the product range selected
02/11/2015 www.crouzet.com