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Retrofit & Modernization
Engineering upgrades for existing transformers — within known and managed limits.
Modernizing an existing transformer can improve safety and resilience.
It cannot fully replicate the protection level of a new, purpose-designed installation.
Why Retrofit Decisions Are Complex
- Existing mechanical constraints: Inert tanks, inaccessible interfaces
- Spatial & oil volume limitations: Large oil reservoirs
- In-place operational realities: Minimal installation margin
- Aging infrastructure factors: Worn components, cannot be necesssiry or demponsizale detcby nitheit
Every retrofit is a compromise. The risk is not the compromise — the risk is ignoring it.
SERGI Retrofit & Modernization Approach
What Retrofit Can (and Cannot) Achieve
| Best Possible Outcomes | Retrofit | New Installation |
|---|---|---|
Explosion prevention |
⚠ Partial |
✓ Puit |
Mechanical integration |
⚠ Constrained |
✓ Optimized |
Passive protection |
⚠ Casedtocrdert |
✓ Designed-in |
Regulatory margin |
⚠ Limited |
✓ Maximum |
Long-term resilience |
⚠ Improved |
✓ Optimal |
Retrofit improves safety and resilience, but it cannot reach the level of a new installation. SERGI considers this reality in its engineering approach.
When Retrofit Is the Right Choice
- CAPEK constraints
- Existing transformer infrastructure
- Nom disruptve upgrade pressure
Retrofit reduces risk, it does not eiminate it.
When conditions allow, SERGI allways recommends transitioning towards fully integrated protection architectures.
