Manual 37351A
MFR 11 Packages - Protection Relay
© Woodward
Page 13/59
Measuring Inputs
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Voltage
100/400 V version
Measuring
voltage
L3
L2
L1
N
G
1
2
3
4
L3
L2
L1
N
Figure 3-5: Measuring inputs - voltage 100/400 V versions
Terminal Measurement Description
A
max
1
Measuring voltage L1
2.5 mm²
2
Measuring voltage L2
2.5 mm²
3
Measuring voltage L3
2.5 mm²
4
400V direct
or trans-
former
../100V
Neutral point of the 3-phase system/transformer
2.5 mm²
690 V version
Measuring
voltage
L3
L2
L1
N
G
3
4
5
6
L3
L2
N
2
1
L1
Figure 3-6: Measuring inputs - voltage, 690 V version
Terminal Measurement Description
A
max
1
Measuring voltage L1
2.5 mm²
2 -N/A-
2.5
mm²
3
Measuring voltage L2
2.5 mm²
4 -N/A-
2.5
mm²
5
Measuring voltage L3
2.5 mm²
6
690 V direct
Neutral point of the 3-phase system/transformer
2.5 mm²