TS Metals
Mill Road West
Rugby
CV21 1BZ
UK
Case studies
Air Cooled Generator Major Inspection
Our Customer’s Challenge
Enel is a multinational energy company and one of the world’s leading integrated electricity and gas operators, present in over 30 countries and serving more than 70 million customers globally.
During a major inspection, the air-cooled generator showed significant contamination. Despite dry ice cleaning, salty contamination remained in hard-to-reach areas of its windings, posing risks including tracking and Partial Discharge (PD), even though basic electrical parameters including Insulation Resistance (IR) and Polarisation Index (PI) were within compliance.
The customer required a solution to ensure the generator’s safe operation by detecting and mitigating hidden contamination that standard parameters had failed to identify.
The Quartzelec Solution
Quartzelec performed advanced electrical testing, including Tan Delta and PD analysis, to identify contamination risks from saline deposits. Deep cleaning was conducted in hard-toaccess areas until electrical parameters showed optimal results and final electrical tests were conducted, which confirmed the complete removal of any hidden contamination, mitigating the risks of PD.
Key Benefits
- Advanced testing was conducted to identify hidden contamination that IR and PI testing could not identify
- Enhanced electrical safety from the improvement of electrical parameters
- Long Term Operational Reliability, ensuring generator efficiency
- Exceeding Customer Expectations as the comprehensive and thorough approach delivered exceptional results
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