89750147 Crouzet USA, 89750147 Datasheet - Page 126

• 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

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To order, see page 6
Phase control
Type
FWA
FWA2
■
■
■
■
■
■
■
1
2
3
4
5
6
Specifications
Principles
FWA / FWA2
B
C
D
E
F
G
H
T1 : Delay in the event of a fault
T2 : Delay on power-down
T3 : Delay on power-up
100 %
100 %
100 %
100 %
Asymmetry rate adjustable on front face (5 % to 20 %).
Controls :
- imbalance (asymmetry) between phases,
- phase sequencing
- loss of phase with regeneration of 95 % of Un.
Supply on 3-phase networks 3 x 230 V AC and 3 x 400
V AC.
Dual frequency : 50 and 60 Hz.
Presence of phases and state of relay indicated via 2
LEDs.
Delay in the event of a fault adjustable from 0.5 to 10
seconds.
Output relay : 2 8A changeover.
FWA/FWA2 phase asymmetry self-powered
0 %
0 %
0 %
0 %
Phase L1
Phase L2
Phase L3
Asymmetry
Threshold asymmetry rate
R1/R2 Output relay (yellow LED)
Hysteresis
T3 T1
Output
1 relay
2 relays
T2
T3 T2
T3
T1
T3
T2
L3
L2
7
Operating principle
The device is self-powered by two phases.
A green LED indicates the presence of the power supply voltage. When the phase sequence is
correct and the asymmetry rate is lower than the threshold displayed on the front face, the ouput
relay is energised, indicated by a yellow LED.
The output relay de-energises after a delay T1, adjustable from the front face, if one of the following
faults is present :
- incorrect phase sequence,
- absence of L3,
- asymmetry rate higher than the threshold displayer. This imbalance represents the increase or
decrease in the voltabe of two phases compared to the voltage of a different phase.
The ouput relay de-energises instantaneously in the event of a break on L1 or L2.
A hysteresis fixed at approximately 10 % ensures bounce-free relay switching around the
threshold.
As differential measurement is used, the FWA does not react to symmetrical increases of decrases
in the network.
Supply voltage
3 x 230 VAC
3 x 400 VAC
3 x 230 VAC
3 x 400 VAC
For more information www.crouzet.com
Code
84 873 300
84 873 301
84 873 310
84 873 311