Transformer Services Inc. has completed transformer installation projects throughout the United States and to international customers using products from a wide variety of transformer manufacturers. Our experienced crews can handle any power transformer, large or small, from receiving inspection to complete assembly and testing.
Receiving Inspection
We perform a unit comprehensive inspection upon arrival at transformer locations:
- Dew Point Test
- External inspection of transformer and accessories
- LTC Compartment
- Control Cabinet
- Radiator and Radiator Valves
- Inspect condition of crates
- Check for positive tank pressure
- Check for oil leaks
- Review the Impact Recorder data:
- Note impact greater than 3 g
- Contact owner immediately for impacts greater than 5 g
- Core to ground test
- Collect sample of bulk oil and test before filling transformer
Complete Assembly
We install all transformer parts and accessories in accordance with manufacturer specifications.
Vacuum Oil-Filling and Dry-Out Process
TSI provides the necessary equipment and technology to meet manufacturer requirements for vacuum degasifying, dehydrating, vacuum oil filling, and on-site dry-out. Our dry-out process removes excess moisture from transformer paper insulation, insulating oil, bushing turrets and other cavities
.
- Perform a dielectric test of the oil before filling the transformer
- Pressure test the unit to ensure the vacuum integrity of the transformer
- Perform Vacuum Drop test
- Heat the oil up to 90° C and oil fill under vacuum
- Fill the transformer with oil at a rate specified by the manufacturer or customer per OEM specifications
- Apply nitrogen blanket
Upon completion, an oil sample is collected and tested to establish a base for trend analysis.
