Grundfos MGE 71 - R100 Installation Menu: Relays, Buttons, Radio, Digital Inputs

English (GB)
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8.5 Winding resistance
As the motor is star-connected, the easiest way to measure the
winding resistance is to measure across two phases. Measure at
the coil temperatures stated in the table below. It may be
necessary to let the motor cool off if it has been running or if it
was stopped because of short-circuit or overload.
Type
Min. / max. resistance across two phases
[Ω]
Motor Min
-1
Voltage [VAC] Power [kW/hp] 20 °C 60 °C 80 °C
MGE 71, MLE 71
1500-2000
1 x 200-240
0.25 / 0.33 12 / 14 13.8 / 16.2 14.8 / 17.3
0.37 / 0.5 12 / 14 13.8 / 16.2 14.8 / 17.3
3 x 380-500
0.25 / 0.33 40.5 / 47.5 46.8 / 55 50 / 58.7
0.37 / 0.5 40.5 / 47.5 46.8 / 55 50 / 58.7
3000-4000
1 x 200-240
0.25 / 0.33 3 / 3.6 3.5 / 4.1 3.8 / 4.4
0.37 / 0.5 3 / 3.6 3.5 / 4.1 3.8 / 4.4
0.55 / 0.75 3 / 3.6 3.5 / 4.1 3.8 / 4.4
3 x 380-500
0.25 / 0.33 10.4 / 12.2 12 / 14.1 12.8 / 15.1
0.37 / 0.5 10.4 / 12.2 12 / 14.1 12.8 / 15.1
0.55 / 0.75 10.4 / 12.2 12 / 14.1 12.8 / 15.1
4000-5900
1 x 200-240
0.25 / 0.33 1.5 / 1.7 1.7 / 2 1.8 / 2.1
0.37 / 0.5 1.5 / 1.7 1.7 / 2 1.8 / 2.1
0.55 / 0.75 1.5 / 1.7 1.7 / 2 1.8 / 2.1
3 x 380-500
0.25 / 0.33 4.6 / 5.4 5.3 / 6.2 5.7 / 6.7
0.37 / 0.5 4.6 / 5.4 5.3 / 6.2 5.7 / 6.7
0.55 / 0.75 4.6 / 5.4 5.3 / 6.2 5.7 / 6.7
MGE 80, MLE 80
1500-2000
1 x 200-240
0.55 / 0.75 6.9 / 8.1 8 / 9.4 8.5 / 10
0.75 / 1 4.3 / 5.1 5 / 5.9 5.3 / 6.3
3 x 380-500
0.55 / 0.75 21.2 / 24.8 24.5 / 28.7 26.1 / 30.7
0.75 / 1 13.5 / 15.9 15.6 / 18.4 16.7 / 19.6
3000-4000
1 x 200-240
0.75 / 1 1.5 / 1.7 1.7 / 2 1.8 / 2.1
1.1 / 1.5 1.6 / 1.8 1.8 / 2.1 1.9 / 2.3
3 x 380-500
0.75 / 1 4.6 / 5.4 5.3 / 6.2 5.7 / 6.7
1.1 / 1.5 5.3 / 6.3 6.2 / 7.2 6.6 / 7.7
4000-5900
1 x 200-240
0.75 / 1 1.5 / 1.7 1.7 / 2 1.8 / 2.1
1.1 / 1.5 1.5 / 1.7 1.7 / 2 1.8 / 2.1
3 x 380-500
0.75 / 1 4.6 / 5.4 5.3 / 6.2 5.7 / 6.7
1.1 / 1.5 4.6 / 5.4 5.3 / 6.2 5.7 / 6.7
MGE 90, MLE 90
1500-2000 3 x 380-500 1.1 / 1.5 8.9 / 10.5 10.3 / 12.1 11 / 12.9
3000-4000
1 x 200-240 1.5 / 2 1.1 / 1.3 1.3 / 1.5 1.4 / 1.6
3 x 380-500
1.5 / 2 3.8 / 4.4 4.4 / 5.1 4.7 / 5.5
2.2 / 3 2.2 / 2.6 2.6 / 3 2.7 / 3.2
4000-5900
1 x 200-240 1.5 / 2 0.8 / 1 1 / 1.1 1 / 1.2
3 x 380-500
1.5 / 2 2.4 / 2.8 2.8 / 3.2 3 / 3.5
2.2 / 3 1.6 / 1.8 1.8 / 2.1 1.9 / 2.3