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Transformer on-load tap changer AT, ATV series
high-speedthree-phase

transformer on-load tap changer
transformer on-load tap changer
transformer on-load tap changer
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Characteristics

Applications
transformer
Electrical characteristics
high-speed, three-phase

Description

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) Options Manufactured in accordance with IEC 60214 and also complies with many other national and international standards

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.