Maintenance and Inspection

To keep the voltage constant

To guarantee the reliable operation of your power transformer, the on-load tap-changer (OLTC) must function properly. Every OLTC requires professional maintenance to ensure this. Put your trust in expertise from the market leader. With more than 6,000 tap-changer maintenance deployments every year, our specially trained and tested service technicians have unrivaled field experience. A comprehensive, unmatched network of 21 service locations worldwide also guarantees fast delivery of spare parts as well as 24/7 availability. 

Your Advantages at a Glance

  1. Regular OLTC service can extend the service life of your equipment

  2. With our premium service, you receive maximum transformer availability and fault-free OLTC operation

  3. With original spare parts, we bring your OLTC up to the latest state of the art

  4. Typically, we are on site within 24 hours

  5. We offer technical service for all types, brands and models of on-load tap-changers

  6. You receive a 24-month warranty, up to the availability guarantee, on work that we carry out

  7. Our OLTC service is in accordance with DIN EN ISO 9001 Quality Management, DIN EN ISO 14001 Environmental Management and ISO 55000

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More Information

TESSA® OLTC Premium Services - OILTAP®

Our OILTAP® on-load tap-changer is characterized by its rugged design, versatile options for use and proven durability. Our oil on-load tap-changers have been in operation for many decades. Because of these long lifespans, the number of tap-change operations and time intervals representing critical maintenance criteria are being reached more and more frequently. Therefore, we offer various tools for the inspection and maintenance of OILTAP® on-load tap-changers.
The inspection and maintenance work can be combined perfectly with electrical measurements for the on-load tap-changer. For oil-filled on-load tap-changers, the vibro-acoustic measurement (VAM) and dynamic resistance measurement (DRM) are available. 

Our VACUTAP® on-load tap-changers are used in multiple high-end applications, such as in strategically important transformers for energy transmission grids or in heavy industry. For such critical applications, reliability, availability and safe operation must be ensured at all times. Therefore, we offer various tools in our portfolio for condition assessment and maintenance. Our all-inclusive package includes various tests, such as a dynamic resistance measurement, vibro-acoustic measurement and other diagnostic measurements (e.g. oil analysis and electrical measurements).

We offer the all-inclusive package! In addition to OEM spare parts and oil handling, we also provide two qualified service experts and a crane. 

Your benefits:                
1. Concentrate your resources on the core business
2. Reduce your overall expenses
3. Get the highest quality when outsourcing your service to MR
4. Can be combined with other services on the transformer
5. Pass on business risk to MR – 2-year warranty
6. Maintenance by truck, no matter the weather

We carry out maintenance on the following tap-changers: All types from Maschinenfabrik Reinhausen; Trafo Union/TUSA/AEG; Elin; Elprom/Hyundai Elprom; Westinghouse; General Electric/Canadian GE; Ferranti/Ferranti Packard; Siemens/Allis Chalmers; ABB/Asea/BBC/Waukesha SPX; Alstom; Mitsubishi, Toshiba; Fuji/Fuji-TU; Hitachi; Brush/ATL; McGraw Edison; Federal Pacific/Federal Pioneer; ZTR; Hawker Siddley; ACEC; other types of old tap-changers from former manufacturers  

Inspection and maintenance work can be combined perfectly with electrical measurements for the on-load tap-changer. For the oil-filled on-load tap-changer, the vibro-acoustic measurements (VAM) and the dynamic resistance measurement (DRM) are available. For a vacuum on-load tap-changer, a combination of vibro-acoustic measurement (VAM), dynamic resistance measurement (DRM) and measurement of the vacuum tubes is offered.

As the operating duration of your transformers increases, by-products such as gas and moisture start to form in the oil. Increasing moisture in the oil leads to a reduction in oil quality.
Carrying out targeted oil treatments in the form of reconditioning or regeneration based on the conditions of use are therefore recommended to prevent operating problems and to extend the service life. We are also experts in smart drying of oil and cellulose in the transformers with the help of the molecular sieve. 

48 hours of on-load tap-changer maintenance in Turkish steelworks

 

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Contact our Experts

Steve Averitt
Area Sales Manager
Alabama, Arkansas, Louisiana, Mississippi

Phone +1 731 4206049
E-Mail s.averitt@us.reinhausen.com

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Edward Hed
Area Sales Manager
Alaska, Idaho, Montana, Nebraska, Oregon, Utah, Washington, Wyoming

Phone +1 731 6182188
E-Mail e.hed@us.reinhausen.com

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Jesus Sanchez
Area Sales Manager
Arizona, Hawaii, California, Nevada, New Mexico

Phone +1 731 618 0906
E-Mail J.Sanchez@us.reinhausen.com

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Paul Shuttleworth
Area Sales Manager
Colorado, Oklahoma, Texas

Phone +1 731 6168729
E-Mail p.shuttleworth@us.reinhausen.com

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Anthony Milone
Area Sales Manager
Connecticut, Delaware, Maine, Maryland, Massachusetts, New Hampshire, New Jersey, New York, Pennsylvania, Rhode Island,, Vermont

Phone  +1 610 8238826
E-Mail a.milone@us.reinhausen.com

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Jarrad Weiss
Area Sales Manager
Florida, Georgia, South Carolina

Phone +1 731 6189267
E-Mail j.weiss@us.reinhausen.com

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Charley Harwell
Area Sales Manager
Illinois, Iowa, Kansas, Michigan, Minnesota, North Dakota, South Dakota, Wisconsin

Phone +1 513 9402386
E-Mail c.harwell@us.reinhausen.com

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Tony Boyd
Area Sales Manager
Indiana, Kentucky, Missouri, Tennessee

Phone +1 731 3945596
E-Mail t.boyd@us.reinhausen.com

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Carlos Bittner
Area Sales Manager
North Carolina, Ohio, Virginia, West Virginia

Phone +1 731 2170103
E-Mail c.bittner@us.reinhausen.com

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