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Distribution transformers, transformer stations

Brush HMA

  • On-load tap changer

Article: 00038871

On-load tap changer

The ?AT? range of single-phase compartment units with high-speed resistor transition is designed for three-phase systems with voltages of 44kV and 66kV line end or 132kV neutral end and nominal rated current of 300A. A maximum of 17 tapping steps (18 positions) is possible for linear regulation and 32 steps (33 positions) for reversing or coarse/fine regulation.

The ?AT? tapchanger is designed such that power flow can be handled in either direction at full-rated current. The ?AT? is an "out-of-tank" flange-mounted tapchanger where the oil in the switch compartment is kept separate at all times from the oil in the main transformer.

?Compact
?Linear, reversing or coarse/fine versions
?Suitable for 1kV, 33kV or 66kV systems, star or delta windings
?400A version (linear only)
?Suitable for 132kV star winding (neutral end only)
?Single-phase version available
?Vertically-mounted option also available
?Manufactured in accordance with IEC 60214 and also complies with many other national and international standards

Specifications

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