1.
Rise time increases/decreases proportionally with cable length.
2.
U
PEAK
= DC link voltage x 1.9
(DC link voltage = Mains voltage x 1.35).
3.
dU
/
dt
=
0.8 ×
UPEAK
Risetime
Data are measured according to IEC 60034-17.
Cable lengths are in metres.
Frequency Converter, P5K5, T2
Cable
length [m]
Mains
voltage [V]
Rise time
[
μ
sec]
Vpeak
[kV]
dU/dt
[kV/
μ
sec]
36
240
0.226
0.616
2.142
50
240
0.262
0.626
1.908
100
240
0.650
0.614
0.757
150
240
0.745
0.612
0.655
Frequency Converter, P7K5, T2
Cable
length [m]
Mains
voltage [V]
Rise time
[
μ
sec]
Vpeak
[kV]
dU/dt
[kV/
μ
sec]
5
230
0.13
0.510
3.090
50
230
0.23
0.590
2.034
100
230
0.54
0.580
0.865
150
230
0.66
0.560
0.674
Frequency Converter, P11K, T2
Cable
length [m]
Mains
voltage [V]
Rise time
[
μ
sec]
Vpeak
[kV]
dU/dt
[kV/
μ
sec]
36
240
0.264
0.624
1.894
136
240
0.536
0.596
0.896
150
240
0.568
0.568
0.806
Frequency Converter, P15K, T2
Cable
length [m]
Mains
voltage [V]
Rise time
[
μ
sec]
Vpeak
[kV]
dU/dt
[kV/
μ
sec]
30
240
0.556
0.650
0.935
100
240
0.592
0.594
0.807
150
240
0.708
0.575
0.669
Frequency Converter, P18K, T2
Cable
length [m]
Mains
voltage [V]
Rise time
[
μ
sec]
Vpeak
[kV]
dU/dt
[kV/
μ
sec]
36
240
0.244
0.608
1.993
136
240
0.568
0.580
0.832
150
240
0.720
0.574
0.661
VLT
®
HVAC Drive Design Guide
8 General Specifications and Troubleshooting
MG.11.B9.02 - VLT
®
is a registered Danfoss trademark
175
8
