Lignostone® Transformerwood® - Laminated densified wood

Lignostone® Transformerwood® is a laminated densified wood according to IEC 61061. It consists of beech veneers (Fagus sylvatica) , which are joined together with thermosetting synthetic resins under pressure and heat.

Lignostone® Transformerwood® is characterized by the following properties:

• good electrical insulation
• very good oil absorption
• low specific weight
• withstands high mechanical loading
• low- and high-temperature resistance
• resistance to abrasion and wear

Key to identification

The required grade for a specific application is defined by:

Densification symbols

L = 0.75 to 1.05 g/cm³
M = 1.10 to 1.25 g/cm³
H = 1.30 to 1.40 g/cm³

Lamination

I= parallel
II= crosswise
X= tangential

Veneer thickness

1 = veneers < 2 mm
2 = veneers ≥ 2 mm

Type of resin

without character = mechanical types
E3 = electrical types

An example for identification of one of the standard types:

LII/2-E3 = Low density – crosswise lamination – with ≥ 2.0 mm veneer – electrical type

We also supply special types for applications with particular requirements.