Transformerboard
Transformerboard is a special product based on the purest cellulose obtained from long-fibre softwoods. Due to its high chemical purity, Transformerboard is ideally suited as an insulating material, especially in oil-filled transformers. The material properties comply with IEC standards. Different types are available depending on the application.
Hot-pressed Transformerboard
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- Fulfils all requirements of IEC 60 641-1 Type B 3.1A
- High mechanical strength
- Low shrinkage and compressibility
- High purity guaranteed by multi-stage quality controls including metal detectors
- 100 % sulphate pulp (electrical grade)
- Good compatibility with insulating liquids
To use as insulationsmaterial in Power-Transformers up to 1200 kV.
Calendered Transformerboard
Fulfils all requirements of IEC 60 641-1
- Type B 2.1A/B 4.1/B 5.1
- Easy processing including good mouldability
- High oil absorption
- High purity guaranteed by multi-stage quality controls including metal detectors
- 100 % sulphate pulp (electrical grade)
- Good compatibility with liquid insulating materials
As insulation material in oil filled distribution transformers.
Laminated Pressboard
Casein-glued board (HDLC)
- Fulfils all requirements of IEC 60 641-1 Type LB.3.1 A.1
- Highest electrical properties
- Very good impregnation properties
- Good compatibility with liquid insulating materials
Polyester resin-glued board (HDLP)
- Fulfils all requirements of IEC 60 641-1 Type LB.3.1 A.2
- Highest mechanical properties
- Low compressibility and shrinkage
- Good compatibility with liquid insulating materials
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HDLC:
- strips
- blocks
- cleats and leads
- spacer rings
HDLP:
- pressplanes
- press supports
Questions about our
Transformerboard products?
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