Danfoss VLT HVAC, Design Manual, Page: 178 / 200

Frequency Converter, P55K, T4
Cable
length [m] Mains
voltage [V] Rise time
[
μ sec]
Vpeak
[kV] dU/dt
[kV/
μ sec]
10 400 0.350 0.932 2.130
Frequency Converter, P75K, T4
Cable
length [m] Mains
voltage [V] Rise time
[
μ
sec]
Vpeak
[kV] dU/dt
[kV/
μ
sec]
5 480 0.371 1.170 2.466
Frequency Converter, P90K, T4
Cable
length [m] Mains
voltage [V] Rise time
[
μ
sec]
Vpeak
[kV] dU/dt
[kV/
μ
sec]
5 400 0.364 1.030 2.264
High Power Range:
Frequency Converter, P110 - P250, T4
Cable
length [m] Mains
voltage [V] Rise time
[
μ sec]
Vpeak
[kV] dU/dt
[kV/
μ sec]
30 400 0.34 1.040 2.447
Frequency Converter, P315 - P1M0, T4
Cable
length [m] Mains
voltage [V] Rise time
[
μ
sec]
Vpeak
[kV] dU/dt
[kV/
μ
sec]
30 500 0.71 1.165 1.389
30 400 0.61 0.942 1.233
30
500
1 0.80 0.906 0.904
30 400 1 0.82 0.760 0.743
Table 8.6: 1: With Danfoss dU/dt filter.
Frequency Converter, P110 - P400, T7
Cable
length [m] Mains
voltage [V] Rise time
[
μ
sec]
Vpeak
[kV] dU/dt
[kV/
μ
sec]
30 690 0.38 1.513 3.304
30 575 0.23 1.313 2.750
30 690 1) 1.72 1.329 0.640
1) With Danfoss dU/dt filter.
Frequency Converter, P450 - P1M4, T7
Cable
length [m] Mains
voltage [V] Rise time
[
μ
sec]
Vpeak
[kV] dU/dt
[kV/
μ
sec]
30 690 0.57 1.611 2.261
30 575 0.25 2.510
30
690
1) 1.13 1.629 1.150
1) With Danfoss dU/dt filter.
8 General Specifications and Troubleshooting VLT ® HVAC Drive Design Guide
178
MG.11.B9.02 - VLT
®
is a registered Danfoss trademark
8