TAXONOMY: MAT_PRESSBOARD
Transformer Pressboard & Cellulose Insulation
Pre-Compressed Transformerboard, Laminated Wood, Crepe Paper & Machined Kits
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Technical Baseline & Specification Parameters
| Pulp Base | 100% unbleached softwood sulphate chemical pulp |
|---|---|
| Density Range | 0.90 to 1.30 g/cm³ (pre-compressed) |
| Dielectric Strength | ≥ 45 kV/mm (oil-impregnated at 90°C) |
| Moisture Content | ≤ 6.0% as delivered, dried to ≤ 0.5% during factory vacuum vapor phase |
| Ash Content | ≤ 0.70% (high chemical purity) |
Subcategories & Engineering Architectures
Pre-Compressed Board (B.3.1)
High-density, dimensionally stable pressboard for clamping rings, pressure rings, and high-voltage barriers.
Calendered Board (B.2.1)
Flexible, moldable pressboard for cylinders, wrap insulation, and duct strips.
Laminated Wood (Lignostone)
Vacuum-densified beechwood with synthetic resin bonding for mechanical coil clamping rings and beam supports.
Diamond Dotted Paper (DDP)
Kraft paper coated with epoxy resin dots on both sides for layer-insulated distribution windings.
CNC Insulation Kits
Prefabricated insulation packages: molded angle rings, snouts, lead exits, and stepped spacers.
Verified Global Suppliers & Manufacturers (9)
Verified suppliers with independent factory documentation, technical capability certifications, and direct quotation channels.
| Company & Location | Capabilities & Product Lines | Status | Action |
|---|---|---|---|
|
Weidmann Electrical Technology Rapperswil, Switzerland |
Global benchmark transformerboard, CNC insulation kits, and diagnostic services | ✓ Verified | Website ↗ · RFQ |
|
Krempel Group Vaihingen, Germany |
Pressboard, flex insulation, and composite materials | ✓ Verified | Website ↗ · RFQ |
|
PSP Pressspan Zwönitz, Germany |
Calendered pressboard and precision stamped components | ✓ Verified | Website ↗ · RFQ |
|
Röchling Engineering Plastics Haren, Germany |
Lignostone transformerwood coil clamping rings and beams | ✓ Verified | Website ↗ · RFQ |
|
Weidmann Electrical Technology (Weidmann Group) Rapperswil, Switzerland |
Pressboard / insulation materials, DDP / DPE (densified pressboard), Laminated wood / insulation wood | ✓ Verified | Website ↗ · RFQ |
|
ABB (bushings & transformer insulators) Zurich, Switzerland |
Bushings (HV, LV), Pressboard / insulation materials | ✓ Verified | Website ↗ · RFQ |
|
Lee Vedla Industrial Corporation Bhopal, India |
Pressboard / insulation materials, CRGO (core steel), Copper / CTC conductors, Transformer oil / ester fluids | ✓ Verified | Website ↗ · RFQ |
|
ACC Insulations Pvt Ltd Nashik, India |
Pressboard / insulation materials, DDP / DPE (densified pressboard), Laminated wood / insulation wood | ✓ Verified | Website ↗ · RFQ |
|
Umang Boards Ltd Jaipur, India |
Pressboard / insulation materials, DDP / DPE (densified pressboard), Transformer oil / ester fluids | ✓ Verified | Website ↗ · RFQ |