Phase control
MWS
MWS2
Part numbers
Product adaptations
Accessories
General characteristics
➜ Single function phase control relay - 17.5 mm
■ Control of 3-phase networks: phase sequence, total
phase failure
■ Multi-voltage from 3 x 208 to 3 x 480 V
■ Controls its own supply voltage
■ True RMS measurement
■ LED status indication
a
Function Phase sequence and
Nominal voltage (V)
Output 1 single pole changeover
Part numbers
MWS MWS2
failure
➞ 3 x 480 V
3 x 208
relay
84873020 84873021
Phase sequence and
failure
a
3 x 208 ➞ 3 x 440 V
2 single pole changeover
relay
■ Customisable colours and labels
Description Code
Removable sealable cover for 17.5 mm casing 84800000
MWS MWS2
Supply
Supply voltage Un
Operating range
Inputs and measuring cicuit
Measurement ranges
General characteristics
Weight 80 g 85 g
Comments
3 x 208
➞ 3 x 480 V
183
➞ 528 V
183
➞ 528 V
* 3-phase mains with earth * 3-phase mains with earth
a
a
a
* 3 x 208 ➞ 3 x 440 V a*
183 ➞ 484 V
183 ➞ 484 V
a
a
a
15
MWS / MWS2
Phase control
Supply
Voltage supply tolerance -12% / +10%
a
supply voltage frequency
50 / 60 Hz ± 10%
Galvanic isolation of power supply/measurement No
Power consumption at Un
1.8 VA in
a
Immunity from micro power cuts 60 ms
Inputs and measuring cicuit
Guaranteed phase failure detection threshold
< 100 V
a
Frequency of measured signal 50 ➞ 60 Hz ± 10%
Timing
Delay on pick-up 500 ms
Alarm on delay time max. 100 ms
Output
Type of contacts No cadmium
Maximum breaking voltage
Max. breaking current
Min. breaking current
Electrical life (number of operations)
Breaking capacity (resistive)
a
250 V
5 A
10 mA / 5 V
1 x 10
1 x 10
1250 VA
z
5
4
/
MWS
MWS2
a
c
c
Maximum rate 360 operations/hour at full load
Operating categories acc. to IEC 60947-5-1 AC12, AC13, AC14, AC15, DC12, DC13
Mechanical life (operations)
30 x 10
6
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
c
General characteristics
Output relay status indication 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 60695-2-11 & NF EN 60695-2-11
Protection (IEC 60529) Terminal block: IP20
Connecting capacity IEC 60947-1
Max. tightening torques IEC 60947-1 0.6
Operating temperature IEC 60068-2 -20
Storage temperature IEC 60068-2 -40
Casing: IP30
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
2
- 2 x 2.52 mm2
➞ 1 Nm / 5.3 ➞ 8.8 Lbf.In
➞ +50°C
➞ +70°C
2
- 2 x 1.52 mm
2
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 / IEC 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
16
Principles
Overview
3-phase network control relays monitor the sequence of phases L1, L2, L3 and failure of one or more phases.
LEDs are used for signalling.
www.crouzet.com
MWS-MWS2 - Phase failure and sequence Operating principle
MWS-MWS2: Phase controller
100 %
L1
0 %
100 %
L2
0 %
100 %
L3
0 %
1
MWS: Relay R
B
Tr
Tr
2
Tr
Tr
The relay monitors its own supply voltage.
The relay controls:
- correct sequencing of the three phases,
L3
- total failure of one of the three phases.
When the phase sequence and voltages are correct (> 183 V
L2
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.
MWS2: Relays R1/R2
Response time on appearance of a fault (Tr)
C
Dimensions (mm)
MWS-MWS2
60
67,5
44
23,2
45
17,5
90
a
), the output relay (s) are closed
5,5
Connections
MWS MWS2
L1
L2
L3
1
F1
100 mA fast-blow fuse
B
L1 L3L2
L2
L3
L1
12 1411
11
R
14
12
L1
L2
L3
B
2,6
1
F1
L1 L3L2
24
L2
L3
L1
12
100 mA fast-blow fuse
11
12
14
11
22 21
21
R1 R2
24
22
14
17
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