Brush UK

AT & ATV Tapchanger

OVERVIEW

The AT and ATV range of single 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 positions (16 steps) 15 possible for linear regulation and 33 tapping positions (32 steps) for reversing of course/fine regulation.

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

Technical Specifications

• Compact

• Linear, reversing or coarse/fine versions

• Suitable for 52kV, star or delta windings

• 400A version (linear only)

• Suitable for 145kV star winding (neutral end only)

• Single-phase version available

• Vertically-mounted option also available

• Compact

• Bi-directional power flow

• High Speed Resistor on-load selector switch

• Ease of maintenance

• Low oil content

• Up to 17 positions (linear) or 33 positions (reverse or coarse/fine)

• Fully automatic or manual operation

• Can be mounted horizontally (AT) or vertically (ATV)