The advantage:

Dry-type insulation: No oil-filling, No gas-filling. Means No leakage, easy maintenance.

No porcelain and Dry type means Anti-fire and Explosion proof.

Dry type Wall bushing

Inner insulation: Grease coated plastic film

External insulation: silicone rubber

Partial discharge: ≤5pC

Dielectric loss factor:≤0.004