Cable length [m (ft)]
AC line voltage [V]
Rise time [μsec]
V
peak
[kV]
dU/dt [kV/μsec]
480
0.468
1.3
2.222
400 V 75 kW (100 hp)
10 (33)
400
0.502
1.048
1.673
480
0.52
1.212
1.869
500
0.51
1.272
1.992
400 V 90 kW (120 hp)
10 (33)
400
0.402
1.108
2.155
400
0.408
1.288
2.529
400
0.424
1.368
2.585
6.12.3 High-power Range
The power sizes in the tables in
6.12.4 dU/dt Test Results for H13–H14
at the appropriate mains voltages comply with the require-
ments of IEC 60034-17:2006 edition 4 regarding normal motors controlled by drives, IEC 60034-25:2007 edition 2.0 regarding mo-
tors designed to be controlled by drives, and NEMA MG 1-1998 Part 31.4.4.2 for inverter-fed motors. The power sizes in the tables in
6.12.4 dU/dt Test Results for H13–H14
do not comply with NEMA MG 1-1998 Part 30.2.2.8 for general purpose motors.
6.12.4 dU/dt Test Results for H13–H14
Table 41: IEC dU/dt Test Results for H13–H14 with Unshielded Cables and No Output Filter, 380–480 V
Power size [kW (hp)]
Cable [m (ft)]
Mains voltage [V]
Rise time [μs]
Peak voltage [V]
dU/dt [V/μs]
90–160 (125–250)
30 (98)
500
0.71
1180
1339
150 (492)
500
0.76
1423
1497
300 (984)
500
0.91
1557
1370
200–315 (300–450)
30 (98)
500
1.10
1116
815
150 (492)
500
2.53
1028
321
300 (984)
500
1.29
835
517
Table 42: IEC dU/dt Test Results for H13–H14 with Shielded Cables and No Output Filter, 380–480 V
Power size [kW (hp)]
Cable [m (ft)]
Mains voltage [V]
Rise time [μs]
Peak voltage [V]
dU/dt [V/μs]
90–160 (125–250)
30 (98)
500
–
–
–
150 (492)
500
0.66
1418
1725
300 (984)
500
0.96
1530
1277
200–315 (300–450)
30 (98)
500
–
–
–
150 (492)
500
0.56
1261
1820
300 (984)
500
0.78
1278
1295
AJ363928382091en-000101 / 130R0983
80 | Danfoss A/S © 2021.04
Electrical Installation
Considerations
VLT® Flow Drive FC 111
Design Guide
