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Substation Services

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Southwest Electric offers On-Site Services for Transformers & Substation Equipment

The Field Service Division of Southwest Electric offers on-site inspection, testing, maintenance and repair services for transformers and associated substation equipment.  These services are performed by skilled, trained, experienced transformer specialists on your site (or in our repair shop if necessary) utilizing specialized tools and equipment specifically suited for the work.

All work is arranged, scheduled and coordinated through our Field Service Coordinator/Customer Service Representative, who serves as a single point contact to ensure the work is accomplished on time and in accordance with customer requirements.

Our field service capabilities include all types of oil handling, servicing, reconditioning, maintenance, testing, or rigging and heavy hauling.

From the simplest leak repair or regasketing to the most complex coil reclamping/reblocking or other field repair, no job is too large or too small for Southwest Electric's experienced service department.


Services Available:

Equipment Serviced and Services Performed:

  • Transformers
  • Bushings
  • Load Tap Changers
  • No-Load Tap Changers
  • Control Cabinets
  • CT’s and PT’s
  • Gauges (all types)
  • Radiators
  • Coolers
  • Core Clamping
  • Winding Reblocking
  • Oil Processing
  • Retrofilling
  • Oil Circuit Breakers
  • Vacuum Breakers
  • SF6 Breakers
  • Circuit Switchers
  • Gang Switches
  • Regulators
  • Reclosers
  • Relays
  • Low, Medium & High Voltage Switchgear
  • Cables
  • Painting of Equipment
  • Condition Assessment
  • Oil Sampling
  • Oil Data Interpretation

Transformer Oil Proccessing

  • Mineral Oil

    • Thermal Cleaning utilizing Fuller’s Earth
    • Energized Thermal Cleaning utilizing Fuller’s Earth
    • Dehydration
    • Degassification
    • Hot Oil Splash
    • Cold Trap Moisture Monitoring
    • Retrofilling for PCB Removal
    • Vacuum Filling
    • Dewpoint Testing
  • Silicone

    • Dehydration
    • Degassification
  • R-temp

    • Dehydration
    • Degassification
  • FR-3 Fluid

    • Retrofilling from other fluids
    • Dehydration
    • Degassification

Equipment Electrical Testing

  • TTR testing
  • Winding Resistance
  • Megger
  • Hot Collar Testing
  • SFRA Testing
  • Solid State and Electro-Mechanical Relays
  • Testing, Programming and Calibration
  • All manufacturers
  • Oil, SF6 & Vacuum Breaker testing

Field Repairs of all Substation Equipment

Transformer Assembly, Vacuum Filling and Acceptance Testing

  • New Transformer Installation
  • Transformer Relocation
  • Coordination of Rigging and Hauling
  • All Manufacturers
  • All MVA’s thru EHV
  • Turn-Key Service:

    • Transformer Receiving
    • SFRA Testing
    • Placement on Pad
    • All ancillary equipment installed
    • Dewpoint testing
    • Vacuum Filling
    • Commissioning



Contact Information

Email Sales

Email Web Master

Phone: 800-494-5658
or: 615-248-6700

Fax: 615-255-7048

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