Danfoss VLT AutomationDrive FC 302 - Page 163

10.13.1 dU/dt Test Results for Enclosures D1h–D8h
Test results for 380–500 V
Power size [kW (hp)] Cable [m (ft)] Mains voltage [V]
Rise time [µs]
Peak voltage [V]
dU/dt [V/µs]
90–132 (125–200) 30 (98) 500 0.26 1180 2109
150 (492) 500 0.21 1423 3087
300 (984) 500 0.56 1557 1032
160–250 (250–350) 30 (98) 500 0.63 1116 843
150 (492) 500 0.80 1028 653
300 (984) 500 0.71 835 651
Table 10.25 NEMA dU/dt Test Results for D1h–D8h with Unshielded Cables and No Output Filter, 380–500 V
Power size [kW (hp)] Cable [m (ft)] Mains voltage [V]
Rise time [µs]
Peak voltage [V]
dU/dt [V/µs]
90–132 (125–200) 30 (98) 500 0.71 1180 1339
150 (492) 500 0.76 1423 1497
300 (984) 500 0.91 1557 1370
160–250 (250–350) 30 (98) 500 1.10 1116 815
150 (492) 500 2.53 1028 321
300 (984) 500 1.29 835 517
Table 10.26 IEC dU/dt Test Results for D1h–D8h with Unshielded Cables and No Output Filter, 380–500 V
Power size [kW (hp)] Cable [m (ft)] Mains voltage [V]
Rise time [µs]
Peak voltage [V]
dU/dt [V/µs]
90–132 (125–200) 30 (98) 500 – – –
150 (492) 500 0.28 1418 2105
300 (984) 500 0.21 1530 2450
160–250 (250–350) 30 (98) 500 – – –
150 (492) 500 0.23 1261 2465
300 (984) 500 0.96 1278 597
Table 10.27 NEMA dU/dt Test Results for D1h–D8h with Shielded Cables and No Output Filter, 380–500 V
Power size [kW (hp)] Cable [m (ft)] Mains voltage [V]
Rise time [µs]
Peak voltage [V]
dU/dt [V/µs]
90–132 (125–200) 30 (98) 500 – – –
150 (492) 500 0.66 1418 1725
300 (984) 500 0.96 1530 1277
160–250 (250–350) 30 (98) 500 – – –
150 (492) 500 0.56 1261 1820
300 (984) 500 0.78 1278 1295
Table 10.28 IEC dU/dt Test Results for D1h–D8h with Shielded Cables and No Output Filter, 380–500 V
Test results for 525–690 V
NEMA does not provide dU/dt results for 690 V.
Power size [kW (hp)] Cable [m (ft)] Mains voltage [V]
Rise time [µs]
Peak voltage [V]
dU/dt [V/µs]
55–132 (60–150) 30 (98) 690 – – –
150 (492) 690 1.11 2135 1535
300 (984) 690 1.28 2304 1433
160–315 (200–350) 30 (98) 690 – – –
150 (492) 690 0.42 996 1885
300 (984) 690 1.38 2163 1253
Table 10.29 IEC dU/dt Test Results for D1h–D8h with Unshielded Cables and No Output Filter, 525–690 V
Electrical Installation Con... Design Guide
MG38C202 Danfoss A/S © 01/2018 All rights reserved. 161
10 10