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© Munters AB, 2018
To avoid excessive voltage drop, which can be harmful to electrical motors, care must be
taken as to the thickness of cables used as well as the distance (D) from the main electrical
enclosure to the motor. In the Table below are the maximum allowable distances.
Motor
Phases
Frequency
[Hz]
Voltage
[V]
Speed
Current
[A]
Cross sectional area of cable
1.5 mm
2
2.5 mm
2
4 mm
2
Maximum allowable length:
D [m]
1 hp /
0.75
kW
3
3
3
1
1
50/60
50/60
50/60
50
60
230
400
200
230
230
single
single
single
single
single
3.5
2.0
3.9-3.3
5.2
5.6
90
150
80
60
50
150
260
139
100
90
240
400
200
160
140
1.5 hp
/ 1.1
kW
3
3
1
1
50/60
50/60
50
60
230
400
230
220
single
single
single
single
4.7-4.2
2.8-2.4
7.3
6.6
60
100
40
40
110
180
70
80
160
270
100
100
2 hp /
1.5 kW
3
3
3
3
50/60
50/60
50/60
60
200
230
400
480
single
single
single
single
7.6-6.7
6.1-5.5
3.5-3.2
3.2
40
50
90
90
70
90
150
160
100
140
240
240
Standard fan motors have the following voltage and frequency:
230/400V three-phase 50 or 60 Hz.
