On-Load Tap-Changing Power Transformer
Plan an on-load tap-changing transformer for voltage regulation with project-defined tap range, control scheme, ratings and maintenance scope.
ILLUSTRATIVE PRODUCT IMAGEOverview: An on-load tap-changing transformer changes its effective ratio while energized to support voltage regulation. The tap changer, controller and transformer must be specified together for the network's operating duty.
Where this configuration is considered
It can be considered in substations and industrial systems where supply voltage varies or regulated output is required. The need for on-load regulation should be justified by the system study and operating requirements.
Information to define before quotation
Define voltage ratio, MVA rating, tap range and step, regulating winding position, operation frequency, control and monitoring interfaces, short-circuit duty and maintenance expectations. Ask for a clear division of supply and test scope.
International standards to review
Reference standards may include IEC 60076-1:2011, IEC 60214-1:2014. The applicable editions, clauses, conformity evidence and test scope must be agreed for the final design and destination market. This page does not claim certification or guaranteed compliance for an unspecified product.
A useful question for the technical brief
What regulation range and number of tap operations does the network study anticipate?
Explore the Special Transformers family, compare all transformer products, or send an RFQ with your project drawings and ratings.
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Electrical ratings
Capacity, voltage ratio, frequency, impedance and the expected load profile.
Site conditions
Indoor or outdoor use, temperature, altitude, space, enclosure and cooling needs.
Project documents
Applicable standards, drawings, required tests, destination and delivery timing.
Tell us what your system needs.
Send a rating, single-line diagram or specification for review.