Reliable Power Through Power Transformer Repair and Services
Complete Transformer Services
- Repair
- Recondition
- Redesign
- Rewind
- Conventional capabilities: 30 MVA, 161 kV class, 350 kV BIL
- Auto capabilities: 50 MVA, 161 kV, class 650 kV BIL
- Coil construction layer, helical, disc
- Hi-density insulation used for cylinders, barriers, blocks, key spacers and core insulation
- Copper wire has either a dennision or a nomex insulation
- Re-insulate core
- Minor rebuild or a complete overall on load tap changer
- Upgrade control components
- Replace old conduit
- Upgrade radiators to de-mountable style
- Upgrade gauges and bushings
- Core and coil are dehydrated for moisture reduction
- All gaskets are replaced and radiator flange valves are re-packed
- Tank and radiators get a new paint job and detail package
Testing
- Transformer Turns Ratio (TTR)
- Insulation resistance
- Winding/conductor resistance
- Doble testing
- SFRA
- Applied potential (hi-pot)
- Induced potential (double induced)
- Load, no-load test
- CT test
- Heat run (optional)
