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  • The Secrets of Transformer Cooling
    your transformer. Those subsystems are often misunderstood and sometimes overlooked. These subsystems are: 1) load tap changer 2) bushings 3) lightning arresters 4) control cabinet 5) the cooling system. The cooling system consists of radiators, valves, pumps, fans, gauges, and controls. I
  • Success Stories- Vacuum Switchgear
    Dead tank vacuum circuit breakers are three-phase devices designed for. power distribution substations. These breakers provide overcurrent protection. and isolation from short circuit conditions for expensive transformer. equipment with the reliability of a mechanical interruption
  • IR and Wetting Contamination
    "hot spots" on the 115KV slant mounted bushings and corona activity could be heard. The transformer with the "hot spots" on the bushings is located closest to the salt water of the Piscataqua River, approximately 75 yards away in Portsmouth, New Hampshire. Minimal or no "hot spots" were noted

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