Danfoss VLT AQUA Drive FC 202 Design Manual page 177
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10.13.2 dU/dt Test Results for Enclosures E1h–E4h
Test results for 380–480 V
Power size [kW (hp)]
Cable [m (ft)]
355–450 (500–600)
30 (98)
150 (492)
300 (984)
500–560 (650–750)
30 (98)
150 (492)
300 (984)
Table 10.31 NEMA dU/dt Test Results for E1h–E4h with Unshielded Cables and No Output Filter, 380–480 V
Power size [kW (hp)]
Cable [m (ft)]
355–450 (500–600)
30 (98)
150 (492)
300 (984)
500–560 (650–750)
30 (98)
150 (492)
300 (984)
Table 10.32 IEC dU/dt Test Results for E1h–E4h with Unshielded Cables and No Output Filter, 380–480 V
Power size [kW (hp)]
Cable [m (ft)]
355–450 (500–600)
30 (98)
150 (492)
500–560 (650–750)
30 (98)
150 (492)
Table 10.33 NEMA dU/dt Test Results for E1h–E4h with Shielded Cables and No Output Filter, 380–480 V
Power size [kW (hp)]
Cable [m (ft)]
355–450 (500–600)
30 (98)
150 (492)
500–560 (650–750)
30 (98)
150 (492)
Table 10.34 IEC dU/dt Test Results for E1h–E4h with Shielded Cables and No Output Filter, 380–480 V
Figure 10.17–Figure 10.20 show the typical rate of rise voltage and peak voltages at the motor terminals for both shielded
and unshielded cables in various configurations.
MG22B222
Design Guide
Mains voltage [V]
5 (16)
460
460
460
460
5 (16)
460
460
460
460
Mains voltage [V]
5 (16)
460
460
460
460
5 (16)
460
460
460
460
Mains voltage [V]
5 (16)
460
460
460
5 (16)
460
460
460
Mains voltage [V]
5 (16)
460
460
460
5 (16)
460
460
460
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Rise time [µs]
Peak voltage [V]
0.23
1038
0.72
1061
0.46
1142
1.84
1244
0.42
1042
0.57
1200
0.63
1110
2.21
1175
Rise time [µs]
Peak voltage [V]
0.33
1038
1.27
1061
0.84
1142
2.25
1244
0.53
1042
1.22
1200
0.90
1110
2.29
1175
Rise time [µs]
Peak voltage [V]
0.17
1017
–
–
0.41
1268
0.17
1042
–
–
0.22
1233
Rise time [µs]
Peak voltage [V]
0.26
1017
–
–
0.70
1268
0.27
1042
–
–
0.52
1233
dU/dt [V/µs]
2372
644
1160
283
1295
820
844
239
dU/dt [V/µs]
2556
668
1094
443
1569
1436
993
10
10
411
dU/dt [V/µs]
3176
–
1311
3126
–
2356
dU/dt [V/µs]
3128
–
1448
3132
–
1897
175
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