Autotransformers

Three-phase autotransformers of the ATF series

ATF series autotransformers are designed to power ELL 12010, ELL 12030, ELL 12080, ELL 14XXX, SDC1V-25, and SDC1-47 electric drives with DC motors.

The ATF series autotransformers are three-phase, with galvanically coupled power windings ABC and XYZ.

The auxiliary power winding x1y1z1n1 is not galvanically coupled to the power windings.

ATF autotransformers are dry, using atmospheric air as the cooling medium.

The ATF series autotransformers have a three-phase design.

Power: from 1.0 kVA to 63 kVA. Input voltage: 3x400 V
Output voltage: up to 3x240 V
Open design
Horizontal mounting
Terminals: Transformer terminals
Insulation class
F: 155°C; / H - 180°C
Frequency: 50/60 Hz
Ambient temperature: 40°C
Protection class: I
Index: IP00
Dielectric strength: 4000 V
IEC standard: EN 61558

Ground terminal