Field Service has always been a hallmark of Delta Star, providing the best and most comprehensive service available to ensure that your transformers operate at optimum performance. Delta Star Field Service offers full-service packages which include installation, processing, and standard maintenance. Delta Star Field Service focuses on preventive maintenance that minimizes future unscheduled maintenance and optimizes the life of the transformer.

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Our services include:

  • Installation, Removal and Relocation
  • Testing (Including standard and diagnostic testing)
  • Repair and Preventive Maintenance
  • Turnkey Installation
  • LTC Maintenance
  • Engineering Services
  • Oil Processing (Dehumidify & Degas)
  • Regasketing
  • Relocation Services
  • Transformer Replacement Parts


Our trained employees offer over 300 years combined experience in the field providing quality support to help significantly lengthen the operational life of your transformer. Our customers can be assured that Delta Star technicians are always there to assist you with experience and technical competence. This experience, quality equipment, and up-to-date training allows us to install over 100 transformers a year.


Delta Star uses professionally maintained and calibrated equipment for every step of the process. From installation to oil processing to testing, we use the latest technology. This allows us to perform field service to the highest standard.

  • 30 – 50 GPM Oil Processing Trailers
  • Full Degassing capabilities
  • Dual 170 CFM Vacuum Pumps
  • 224 Kilowatt Heating Systems
  • Inhibitor injection system


Our professional technicians use the latest technology in test sets to ensure high levels of accuracy and repeatability.
Field testing capabilities include:

  • Power Factor Bushings
  • Power Factor Transformer
  • 10 kV Excitation
  • Megger Winding and Core Ground
  • Functional Testing of Protection and Control Circuits

In addition to standard testing, Delta Star offers advanced testing and diagnostics including: Sweep Frequency Response Analysis (SFRA), CT’s (Ratio, Resistance, Saturation Curves), Winding Resistance, Ultrasonic Leak Detection, Leakage Reactance, Thermal Imaging, Dewpoint, Dielectric Frequency Response, and Oil Testing.


Delta Star provides logistical service and support to transport, relocate, and install transformers. Electronic Impact Recorders with GPS and automated notification of events are used to track transformers during shipments and ensure that your transformer arrives protected and on time. We at Delta Star have extensive experience with railcar, truck, and shipments.


Our professional technicians receive extensive technical and safety training. Our technicians are outfitted with proper Personal Protective Equipment (PPE) and are trained in accordance to OSHA requirements. Other safety courses include: Safe Work Practices, Hazardous Materials, Forklift Safety (Operator’s Permit), Overhead Crane (Operator’s Permit), Scaffold, Ladders, and Fall Protection, Heat Stress, Fire Safety, Safe Electrical Practices, NFPA 70E 8-hour Electrical Safety, Lockout/Tagout, Confined Space Safety and Rescue, First Aid/CPR, and Bloodborne Pathogens.

Delta Star Field Service

3550 Mayflower Drive
Lynchburg, VA 24501 

Toll Free: (800) 368-3017  
(888) 510-5829
Midwest Sales: (434) 841-4903