W W W.C ROUZE T.COM
ALL-PURPOSE
3-PHASE MONITORING RELAYS
Crouzet Control 3-Phase Monitoring
Relays enable in-time detection of 3-phase
electrical network faults. They indicate the
need for maintenance and/or corrective
operations before additional costs are
incurred (production shutdown, motor repair
or replacement, etc.).
L1
L2
L3
TYPICAL APPLICATIONS
CROUZET CONTROL OFFERS A SOLUTION FOR THE MOST COMMON NEEDS FOR 3-PHASE MONITORING:
THE BASIC
THE EXTENDED
THE ADVANCED
››Phase sequence monitoring
››Phase sequence monitoring
››Phase sequence monitoring
››Phase failure monitoring
››Phase failure monitoring
››Phase failure monitoring
››1 Output relay 8Amps
››1 Output relay 5Amps
››Under-Voltage monitoring
84873029-MWS
84873023-MWU
++Under-Voltage monitoring
++70% Regeneration
++Selectable timing for alarm
84873026-HWUA
››Selectable timing for alarm
++2 Output relays 5Amps
++Over-Voltage monitoring
++Asymmetry monitoring
Crouzet Control offers a complete range of 3-Phase, Current, Voltage, Frequency, Level, and Speed Monitoring Relays, Timers, Counters and more. For more information on these and other Crouzet
Control products visit www.crouzet.com
PHASE CONTROL RELAYS
Part Number
Type
Regeneration Sequence / Asymmetry
Phase Failure
84 873 021
MWS2
84 873 022
MWG
84 873 023
MWU
84 873 024
MWA
84 873 025
MWUA
87 873 026
HWUA
84 873 029
MWS
84 873 034
EWS2
84 873 220
H3US
84 873 222
M3US
84 903 020 (A) EMWS
Loss of Phase and Neutral
84 873 221
H3USN
Overvoltage / Undervoltage
Timing
Changeover Housing Width
Output Relay
(mm)
Agency Approvals
No
70%
70%
70%
70%
No
No
No
No
No
No
Yes / No
Yes / No
Yes / No
Yes / 5 to 15%
Yes / 5 to 15%
Yes / 5 to 15%
Yes / No
Yes / No
No / No
No / No
Yes / No
No / No
No / No
No / -20 to -2%
No / No
±2 to ±20%
+2 to +20% / -20 to -2%
No / No
No / No
+2 to +20% / -20 to -2%
+2 to +20% / -20 to -2%
No / No
No
No
0.1 s to 10 s
0.1 s to 10 s
0.1 s to 10 s
0.3 s to 30 s
No
No
0.3 s to 30 s
0.3 s to 30 s
No
2x5A
1x5A
1x5A
1x5A
1x5A
2x5A
1x8A
2x8A
2x5A
1x5A
1x5A
17.5
17.5
17.5
17.5
17.5
35
17.5
22.5
35
17.5
17.5
183 to 484 VAC
183 to 528 VAC
183 to 528 VAC
183 to 528 VAC
183 to 528 VAC
194 to 528 VAC
183 to 528 VAC
194 to 484 VAC
194 to 528 VAC
183 to 528 VAC
183 to 528 VAC
CE, C-UL-US Listed, CSA
CE, C-UL-US Listed, CSA
CE, C-UL-US Listed, CSA
CE, C-UL-US Listed, CSA
CE, C-UL-US Listed, CSA
CE, C-UL-US Listed, CSA
CE, C-UL-US Listed, CSA
CE, C-UL-US Listed
CE, C-UL-US Listed, CSA
CE, C-UL-US Listed, CSA
CE, C-UL-US Listed
No
No / No
+2 to +20% / -20 to -2%
0.3 s to 30 s
2x5A
35
96 to 332 VAC
CE, C-UL-US Listed, CSA
17.5 mm
22.5 mm
35 mm
68 [2.67]
60 [2.36]
60 [2.36]
L
44 [1.73]
23.2 [0.91]
17.5 mm
22.5 mm
35 mm
17.5 [0.69]
22.5 [0.88]
35 [1.38]
On 3-phase
supplies, the
monitoring relays
check phase
sequence and
phase failure
preventing a
change in direction
of rotation, and
single-phase
operating modes.
They therefore
avoid overheating
faults linked to
phase imbalance.
3 GOOD REASONS FOR
INSTALLING A MONITORING
RELAY IN YOUR EQUIPMENT
MECHANICAL DIMENSIONS (B)
L mm [in]
Meas. Range (Self-powered)
50 / 60 Hz
3.5 [0.14]
1 CLOSE-UP PROTECTION FOR TOTAL AVAILABILITY OF EQUIPMENT!
3 OPTIMIZE CONTINUITY OF SERVICE
RESULT: IMPROVED OPERATION AND PRODUCTIVITY FOR YOUR INSTALLATION! BY USING
MONITORING RELAYS, YOU OPTIMIZE YOUR PRODUCTION MANAGEMENT AND REDUCE INCIDENTS
WHICH COULD ADVERSELY AFFECT YOUR PRODUCTIVITY.
5.5 [0.22]
(A) For information on the EMWS mechanical dimensions see product datasheet available at www.crouzet.com.
(B) All dimensions in drawings are in millimeters [inches] and are for reference only.
68 [2.67] 22.5mm
60 [2.36] 17.5mm and 35mm
Americas
44 [1.73]
23.2 [0.91]
Tel.: +1 (800) 677 5311
3.5 [0.14]
customer.service@us.crouzet.com
17.5 [0.69]
Europe, Middle East & Africa
Asia
Tel.: +44 (0) 1202 416172
info@crouzet.co.uk
Tel.: +86 (0) 21 6065 6888
china@cstsensors.com
22.5 [0.88]
35 [1.38]
HO/CZ/3M/EN/UK Rev.032615
90 [3.54]
2.6 [0.1]
90 [3.54]
2.6 [0.1]
2.6 [0.1]
90 [3.54]
90 [3.54]
45 [1.77]
67.5 [2.66]
2 ALL ANOMALIES ARE DETECTED!