89750147 Crouzet USA, 89750147 Datasheet - Page 125

• Manufacturer Part Number: 89750147
• Description: STAINLESS SLEEVE-MILL TEMP PRB
• Manufacturer: Crouzet USA

Specifications of 89750147

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

For more information www.crouzet.com
W (L3)
Dimensions
FW
Connections
FW
Principles
FW
U (L1)
V (L2)
R1/R2
3
MA
AR
B
C
D
E
4
3,6
12 14
A1 11
Isolating switch
Contactor
Alarm
Auxiliary power supply
R
23
R S T
d1
A2
T
100
77
T
20%
20%
20%
D1
2
R S
U V W
3
M
5
~
T
T
1
FW
Monitoring of three-phase motor.
Manual re-engage after disappearance of the
fault.
B
C
D
E
and signalling
Operating principle
In a 3-phase network, the FW simultaneously monitors phase sequencing, loss of phase with a
maximum regeneration rate of 70 % of the voltage displayed by a potentiometer on the front face,
and symmetrical voltage drop on the 3 phases of less than 20 % of the preset value.
When the 3 phases succeed on another, the output relay is activated and indicated via a yellow
LED.
The output relay de-energises (LED off) after a time delay T, adjustable between 0.2 and 10
seconds on the front face, if one of the following faults is present :
- reversed direction of phase rotation,
- absence of one or more phases,
- volgage drop.
Note :
Time delay T is not operational during loss of L1 and L2.
It operates during loss of L3, phase inversion or voltage drop. Its role is to prevent spurious
triggering of output relays during transient states, notably during motor starting.
45
Isolating switch
Contactor
Alarm
Auxiliary power supply for contactor coil
4,2
FW
Terminal identification
L1-L2-L3 3-phase network being monitored
12-13-14 Output relay
21-22-24 Output relay
W
U
V
L1
L2
L3
3
~
12
R1
11
14
22
R2
21
24
125
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