VLT ® 2000 Series Special conditions I 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:
IІ xt 4.1 AІ s 15.2 AІ s 26 AІ s 36 AІ s 4 AІ s 4 AІ s 1 ) Single phase installation 2 ) Three phase installation IІ xt 0.11 AІ s 0.11 AІ s 14.4 AІ s 14.4 AІ s 25.4 AІ s 25.4 AІ s 96 MG.20.B6.02 – VLT is a registered Danfoss trademark 1 x 220/230/240 V 3 x 208/220/230/240 V l PEAK VLT 2010 1 32 A VLT 2015 1 80 A VLT 2020 1 80 A VLT 2030 1 160 A VLT 2040 2 16 A VLT 2050 2 16 A 3 x 308-460 V l PEAK VLT 2020 28.8 A VLT 2025 28.8 A VLT 2030 94.4 A VLT 2040 94.4 A VLT 2050 136 A VLT 2060 136 A