"At our core, Niagara Transformer has the best people, taking on the toughest engineering challenges with the highest quality and the shortest lead times." - John F. Darby, President

Niagara Transformer Installation and Service


Niagara Transformer Covering the globe


The Niagara Transformer Corporation provides a wide range of services to ensure that your transformer is installed properly and runs efficiently year after year. All transformers are factory-tested under rigorous conditions. We can repair or retrofit/upgrade existing transformers and provide a variety of other field services. In addition, most spare parts are in stock and available for fast shipment.


Factory Testing Services:

  • All tests to 1000 kv BIL
  • No-load and Load Losses
  • Impulse Test
  • Applied Test
  • Induced Test
  • Corona / Partial Discharge
  • Switching Impulse Test


Installation Services:

  • Crane Service Coordination
  • Offloading and Pad-Mounted
  • Field Assembly
  • Liquid/Oil Filling and Processing


Retrofit & Transformer Upgrade Services:

  • Fan and Cooling Packages
  • Radiators
  • Current Transformers
  • Nitrogen Systems
  • Control Upgrades
  • DETC & LTC Tap Changers


Field Service - Transformer Repair:

  • Redesign
  • Emergency Replacements
  • Reconditioning
  • Windings Replacement
  • Core Steel Replacement
  • Radiator Repair
  • Replacement Liquid/Oil
  • Leak Repair


Field Service - Testing:

  • Ratio
  • Insulation Resistance
  • Core Megger
  • Power Factor
  • Resistance
  • Oil Dielectric
  • DGA Sampling
  • Control Verification


Replacement Parts:

  • Replacement Parts
  • Bushings
  • Gaskets
  • Gauges
  • Electronic Temperature Monitors
  • Relief Devices
  • Sudden Pressure Relays
  • Nitrogen Systems
  • Gas Monitoring Systems
  • Radiators
  • Fans
  • Controls

Niagara Transformer
Niagara Transformer
Niagara Transformer