Weidmann Electrical Technology (Weidmann Group)
World market leader in high-density precompressed transformerboard (Transformerboard TIV/TIV-T), molded pressboard components (snout caps, angle rings, lead exits), cylinders and insulation kits for power and UHV transformers.
Product categories
Pressboard / insulation materials DDP / DPE (densified pressboard) Laminated wood / insulation wood
Related components
Company record
| Company | Weidmann Electrical Technology (Weidmann Group) |
|---|---|
| Role | PRIMARY_MILL_MANUFACTURER |
| Location | Rapperswil, Switzerland |
| Accessory categories | Pressboard / insulation materials, DDP / DPE (densified pressboard), Laminated wood / insulation wood |
| Product family | Precompressed Transformerboard, Formed Insulation Components & Kits |
| Product / Trade names | Transformerboard TIV, T-IV, B.3.1, B.4.1, Moulded Rings, Angle Rings, Snout Kits |
| Thermal insulation class | 105°C (Class A) & 120°C (Thermally upgraded) |
| Density | 1.15 – 1.30 g/cm³ |
| Documented grades | IEC 60641-3-1 Type B.3.1, IEC 60641-3-1 Type B.3.1A, IEC 60641-3-1 Type B.4.1, ASTM D4063 |
| Thickness / dimensions | 0.8 mm – 8.0 mm (laminated up to 120 mm) |
| Technical standards | IEC 60641-3-1, ASTM D4063, ISO 9001 |
| Founded | 1877 |
| Primary evidence citation | Weidmann Electrical Technology AG official datasheets & product manual |
| Source tier | TIER A |
| Provenance | Verified · Source: official website · checked 31 Aug 2026 |
Directory entries are informational supplier listings and do not imply verification, endorsement or commercial affiliation. Verification reflects a website check on the date recorded; always carry out your own due diligence before a commercial decision.
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