Danfoss VLT HVAC Design Manual page 175

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