In the event of a coil(s) failure, Niagara Transformer Service fully inspects your transformer to determine winding material and configuration.

Next Steps:

1. Disassemble the coil(s).
2. Reverse engineer to determine coil(s) size, voltage, and kVA/MVA.
3. Design, wind, and install the new coil(s).
4. Perform a full electrical test.
5. Ability to rewind the transformer with higher temperature insulation to increase the kVA output of the existing transformer by allowing the temperature rise to be increased.

Leaking transformers can be a detrimental problem not only for the unit but the environment as well:

1. Moisture and oxygen can enter a transformer through leaking gaskets, causing accelerated aging of insulation and insulation failure.
2. Oil spilling onto the ground and possibly into groundwater can be expensive to remedy; leaking oil can carry lead from transformer paint (if paint is lead-based) into the ground causing further contamination.
3. Leaks above the transformer oil can allow the nitrogen blanket to escape, causing more frequent nitrogen bottle replacements if equipped with a positive pressure system.
4. We can either fix just the leaking location(s) or completely re-gasket all transformer openings and reprocess the oil to restore equipment to good condition.

Tap changers, bushings, gauges, cooling fans, radiators, controls, etc.

Either replace components with the same or similar manufacture replacement parts, or upgrade to more modern components. Additional modern monitoring devices may be able to added to give more operational information.

Complete Transformer Testing, Complete Oil Diagnostic Services, Inspect Transformer and All Accessories, Assessment and Recommendations.

Electrical failure typically involves line surges, which is a very common cause of transformer failure. Voltage spikes, switching surges and line faults are a few common culprits of electrical failure.

1. Doble Insulation Power Factor Test
2. Excitation Test
3. Insulation Resistance Test
4. Winding Resistance Test
5. Partial Discharge Test
6. Turn Ratio Test
7. Phase Relation
8. Impulse Testing
9. DGA Analysis
10. Core Loss and Excitation Current
11. Load Loss and Impedance
12. Temperature Rise
13. Doble Sweep Frequency Response Analysis
14. Dielectric Frequency Response