Our maintenance programs division is well equipped with the knowledge and equipment for any kind of electrical system. From Transformers, and switchgear to substations- we maintain, repair and inspect them all. With the latest technology and know- how, we are prepared to test any mechanical system.
Carr & Duff, Inc. performs Dissolved Gas in Oil analysis (DGA), screen tests, water content and can test for PCB content. A DGA analyzes the type and quantity of gas dissolved in the transformer oil.
The principal gases that are typically found are hydrogen, oxygen, nitrogen, carbon monoxide, carbon dioxide, methane, ethylene, ethane and acetylene. Certain quantities and combination of these gases are indicative of: insulation overheating/overloading, liquid overheating, partial discharge (corona), or arcing in the transformer. A transformer’s oil fluid serves as a heat transfer medium; it is also a part of the transformer’s insulation system. PBC tests are for older transformers to ensure compliance with EPA regulations.
Carr & Duff, Inc. Services Include:
- Heavy hauling and rigging of components and equipment
- Apparatus installation, maintenance and testing