High-voltage equipment is regularly exposed to electrical, mechanical and thermal stresses as well as environmental conditions. These factors can accelerate the deterioration of insulation and electrical integrity, eventually leading to failure. Performing periodic tests throughout the service life of your infrastructure will keep you up to date on the state of your equipment and help you redefine the service life expectations.

Let Doble Power Services carry out a full suite of on-line surveys to ascertain the health of your substation and plant equipment. We will identify the risks for ongoing use of your equipment before they become a serious problem.

Doble Power Services offers the following:

On-line partial discharge testing
  • RFI survey
  • Partial discharge (UHF)


Additional on-line tests
  • Infrared
  • Acoustic
  • SF6 leak detection
  • Moisture in oil
  • Earthing
Surge arrester testing
GIS commissioning & applied voltage testing
GIS partial discharge survey


Benefits of substation testing include:

  • Identifies aging accelerators relating to the site and the application/utilization of individual key items of plant
  • Identifies evidence of any abnormalities in the equipment technical condition likely to lead to a shorter life
  • Undertakes a systematic aging evaluation that compares each key unit to the normal life expectancy currently ascribed for the company stock for the group

Doble Engineering Company

Doble Engineering Company