Whether it’s warranty repair for transformer manufacturers, or replacing components on older transformers, our expert crews perform internal inspection and repairs on transformers of all sizes. Emaar will also retrofit your aging transformers with new ones designed to fit within your existing configuration. Our experienced teams perform maintenance services that include:
- Regasketing
- Bushing Replacement
- Radiator Replacement
- Welding Repairs
- Load Tap Changer
- Oil Sampling, Testing and Retrofitting
- Transformer Retrofit
Our crews regularly work weekends and holidays to minimize your downtime.
DRY Type Transformer Maintenance:
The life of your dry type transformers can be improved with proper maintenance. An inspection and maintenance schedule should be established to maximize the life of this equipment. Evidence of rusting, corrosion, and deterioration of the insulation, varnish or paint should be checked, and corrective measures taken. Auxiliary devices should be inspected and serviced during these inspections.
Windings should be inspected for contaminants, especially on insulating surfaces or where they could restrict air flow. Check for loose connections, condition of tap changers, terminal boards and for the general condition of the transformer. Check for signs of overheating and tracking or carbonization marks.
The intervals at which ventilated dry type transformers should be inspected depends on operating conditions. For clean, dry locations, an annual inspection may be sufficient. For harsher environments where there is dust, metallic particles or chemical fumes, a more frequent inspection may be required. Usually after a few inspections, a schedule can be established based on the existing conditions.
Dust, dirt or residues on windings or insulators should be removed to permit free circulation of air and to reduce the possibility of insulation breakdowns. Particular attention should be given to cleaning windings and vents. The windings may be cleaned with a vacuum cleaner, a blower, or with compressed air. The use of a vacuum cleaner is preferred, followed by.