If it involves a transformer MSTS provides the service.

MSTS field service includes transformer oil processing and oil analysis.  Our oil processing rigs are set up to process oil in any transformer.  After processing, we can provide you with an oil analysis report that includes dissolved gas analysis and oil quality results sent directly to you.


MSTS installs, assembles, and performs vacuum oil filling on all sizes of power transformers.  MSTS has traveled through-out the U.S. servicing transformers.  MSTS is preferred contractor for various transformer manufactures, providing complete assembly, installation, and commissioning, as well as routine warranty service.


MSTS performs warranty repairs for manufactures, as well as repairing older transformers.  MSTS field service crews perform internal inspections and repairs on any size transformer.


Field Services Include:


  • Oil Sampling and Analysis
  • Bushing Replacement
  • Load Tap Changer and No Load Tap Changer Repair
  • Radiator Replacement / Repair
  • Re-gasketing

MSTS uses state-of-the art test equipment to perform electrical field testing.  All MSTS test technicians have extensive transformer test experience in the shop and field, insuring the test accuracy you need!



  • Insulation Power Factor
  • Excitation Current
  • Transformer Turns Ration (TTR)
  • Winding Resistance
  • CT (Ratio, Polarity, Saturation)
  • Insulation Resistance
  • SFRA Testing
  • Leakage Reactance (Impedance)
  • Capacitance Measurement