- DRY-TYPE & CLEAN AIR TECHNOLOGY
- DRY-TYPE & CLEAN AIR TECHNOLOGY
Set the
Grid Free.
Dry-Type and Clean Air technologies eliminate the critical dependency that has defined – and constrained – high-voltage infrastructure for decades.
The result: safer infrastructure, simpler installations and a grid built for what comes next.
- Oil-free • Fire-free – by design
A Fact-Based Comparison.
Solution by Solution.
Across Bushings, Shunt Reactors, and Instrument Transformers, our oil-free and SF6-free technologies consistently lead where it matters most: safety, maintenance, and lifetime performance.
The comparison below shows exactly where Dry-Type and Clean Air solutions outperform oil-filled alternatives – and, with the same transparency, the areas where oil-filled retains a specific advantage.
| Characteristic | Dry Bushings | Oil Bushings |
|---|---|---|
| No oil leakage | ||
| Maintenance | ||
| Fire risk mitigation | ||
| Explosion risk mitigation | ||
| Lower economical impact | ||
| Lifetime |
No oil leakage
Maintenance
Fire risk mitigation
Explosion risk mitigation
Lower economical impact
Lifetime
| Characteristic | Dry Shunt Reactors | Oil Shunt Reactors |
|---|---|---|
| No oil leakage | ||
| Maintenance | ||
| Fire risk mitigation | ||
| Explosion risk mitigation | ||
| Reduced total cost of ownership | ||
| Modularity | ||
| Smaller footprint | ||
| Variable option |
No oil leakage
Maintenance
Fire risk mitigation
Explosion risk mitigation
Reduced total cost of ownership
Modularity
Smaller footprint
Variable option
| Characteristic | Clean Air ITs | Oil ITs |
|---|---|---|
| No oil leakage | ||
| Maintenance | ||
| Fire risk mitigation | ||
| Explosion risk mitigation | ||
| Lower economical impact | ||
| No pressurized unit | ||
| Smaller dimension | ||
| Lifetime |
No oil leakage
Maintenance
Fire risk mitigation
Explosion risk mitigation
Lower economical impact
No pressurized unit
Smaller dimension
Lifetime
- The case for dry-type and clean air
- The case for dry-type and clean air
The Grid Needs
Better Technology.
Dry-Type bushings, Dry-Type air core reactors, and Clean Air instrument transformers eliminate the need for containment bunds, fire suppression systems, oil monitoring circuits and SF6 management.
Simpler to build. Safer to operate. Easier to maintain.
The infrastructure of the future doesn’t carry the liabilities of the past.
- Dry-Type and Clean Air Product Portfolio
Built with Superior Technology.
Engineered Without Limits.
Every product in the Trench Dry-Type and Clean Air range is engineered without oil, without SF6 and without compromise – from high-voltage bushings to air core reactors rated up to 765 kV for the most demanding grid applications.
Bushings — RIS · Resin Impregnated Synthetic (up to 580 kV)
Bushings — RIG · Resin Impregnated Glass Fiber (up to 52 kV)
Bushings — RIP · Resin Impregnated Paper (standard & HVDC)
- GET IN TOUCH
The Right Technology Deserves the Right Conversation.
You’ve seen the case for Dry-Type and Clean Air.
Now let’s talk about your specific application.
Whether you’re evaluating a new project, comparing technologies, or ready to move forward – our team is here to help you make the right call.