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LAMINATED PRESSBOARD

LAMINATEDBOARD | Enpay

LAMINATED PRESSBOARD (ELBC - ELBP)

The application areas of Laminated Pressboard include press rings, end rings, shield rings, beams, support strips, and fixing parts for power, distribution, and special transformers. Laminated Pressboards are usually processed into components that provide mechanical support for windings, lead exits, and lead ends.

Laminated Pressboards are produced from boards with various thicknesses, and their densities range between 1.20 and 1.25 g/cm³. These boards are classified as a class (105°C) insulation material and have a pure cellulose colour.

There are two types of Laminated Pressboards available:

  • ELBC (Enpay Laminated Board with Casein) produced according to IEC 60763-3-1 TYPE LB3.1A.1 standard.
  • ELBP (Enpay Laminated Board with Polyester) produced according to IEC 60763-3-1 TYPE LB3.1A.2 standard.

ELBC utilizes a water-based casein glue with excellent transformer oil permeability, while ELBP boasts the highest mechanical strength and uses a polyester glue resin. Boards are bonded together using a robust pressing method, and we recommend using polyester glue for thicknesses exceeding 40 mm.

Our machines can work on large-dimension insulation components in various geometries, such as clamping rings for large power transformers and yoke clamping parts for traction transformer cores. The working space dimensions are 3200x3200x700 mm, with a handling precision of +/- 0.2 mm and a positioning precision of +/- 0.030 mm.

Reliable Transformer Solutions and Global Quality for 50 Years

ENPAY has been a leader in transformer component manufacturing since 1978. With power and distribution transformers, shunt reactors, and high-voltage insulations, we provide global quality in over 50 countries.

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