DTFSP - Three-phase autotransformers

Designed and tested according

• IEC/EN 61558-2-13 / EN 60076-11

Typical applications

• Voltage adjustment

Basic equipment

• Ambient temperature –25 to 40 °C
• Connection terminal (<=115 A)
• Frequency 50/60 Hz
• Vector group Yna0
• Maximum load to neutral point: 10% of nominal current

CAD data

• 3D models

• For versions with increased climate resistance, the transformer is supplied with a specially insulated finish. The finish allows the transformer to be used in areas of high humidity.
• CUR according to EIS 130 or EIS 155 to OBJY2. or OBJY8.E160829 (Systems, Electrical Insulation - Component bzw. Systems, Electrical Insulation Certified for Canada - Component)

When ordering, the following information must be added to the type designation:

DTFSP100(*/*)
1^st place holder ≙ rated input voltage
2^nd place holder ≙ rated output voltage

Sample order

• required throughput rating 220 kVA
• required rated input voltage 690 V
• required output voltage 400 V

Notes for selection
S_T = S_N x (1 - Lowervoltage / Highervoltage)= 220 kVA (1 - 400V/690 V) = 92,5 kVA
S_T = type power = power, which is relevant for the size of the transformers
S_N = nominal power = power, which is the relevant figure of the load of the transformers

• The type rated power is always smaller than the throughtput rating.
• Versions with delta stabilizing winding on request.

The correct type designation reads DTFSP100(690/400).

The unambiguous article number of your configuration will be defined by trafomodern during the offer- and order process.