Cut-In Current; Maximum Cut-In Current Surge Measured At 25°C - Danfoss VLT 2000 Series Manual

Cut-in current

On cutting in the VLT frequency converter to the
mains a cut-in current surge occurs. The cut-in
current is limited by an NTC resistor. The size of this
current surge depends on the mains impedance and
the NTC resistor's cooling time since the last cut-in.
The current surge can be doubled if the VLT
frequency converter is still warm. The cooling time is
100-200 seconds.
Maximum cut-in current surge measured at 25°C:
1 x 220/230/240 V
3 x 208/220/230/240 V
VLT 2010 1
1
VLT 2015
VLT 2020 1
VLT 2030 1
2
VLT 2040
VLT 2050 2
1
) Single phase installation
2 ) Three phase installation
3 x 308-460 V
VLT 2020
VLT 2025
VLT 2030
VLT 2040
VLT 2050
VLT 2060
96
l I² xt
PEAK
32 A 4.1 A² s
80 A 15.2 A² s
80 A 26 A² s
160 A 36 A² s
16 A 4 A² s
16 A 4 A² s
l I² xt
PEAK
28.8 A 0.11 A² s
28.8 A 0.11 A² s
94.4 A 14.4 A² s
94.4 A 14.4 A² s
136 A 25.4 A² s
136 A 25.4 A² s
VLT ® 2000 Series
MG.20.B6.02 – VLT is a registered Danfoss trademark