Five-column transformers, 3TT type

Five-column transformers, 3TT type

Purpose and design

Five-column transformers are used in applications where a significant reduction in transformer height is required. In five-column transformers there are two side uncoiled yokes, which make it possible, while maintaining the full power of the transformer, to significantly reduce the cross-section of the upper yokes. We manufacture five-column transformers for any power and voltage required. By agreement, transformers can be supplied in IP 23, IP 44 and IP 54 enclosures with power cable routing through cable glands.

Upon agreement, we can manufacture a non- standard device with the required technical parameters.
The manufacturer reserves the right to make changes to the parameters due to technical product developments.

Technical Standards EN/IEC 61558, EN/IEC 60076
Power from 10 to 1600 kVA
Primary/secondary voltage up to 1000 V / up to 1000 V
Connection group Dyn5
Frequency 50 / 60 Hz
Protection classIP00 or IP23
Insulation class F (155°C) or H (180°C)
Ambient temperature from -25°C to +40°C
Environment class C1/E0 – land based, C2/E1 – mining and offshore
Protection class class I
Mounting by means of brackets

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