Varnishes and Solvents

Insulating varnishes and impregnating resins are thermosetting resins such as epoxies or phenolics. They are used to ensure that electrical devices, including motors, generators, transformers, sensors, and other devices that function by electromagnetic induction, have the necessary electrical insulation and structural integrity for operation. These materials crosslink when applied and are, therefore, inherently strong, environmentally stable, impervious, and durable. Transformers, for instance, are comprised of coil windings where the electric wires are protected by a thermosetting resin or an insulating varnish (also called a wire enamel or primary insulation) to prevent electrical shorting. The completed transformer, comprised of an assembly of coil windings and insulating paper, is sealed with a thermosetting resin to provide environmental protection (especially from moisture and dust) to eliminate air in the transformer that can conduct electricity and heat, and to provide strength.

At Global Connection,we have H class varnish of different brands ranging from local Euro Varnish to UK based Ultimeg AEV Brand . We have varnishes available for every customer based on their requirements.

Description

Electrical Insulating varnishes are resins like epoxies or alkyds used to protect high voltage machines such as transformers, motors and generators from electrical failure. They are applied over electrical conductors to provide a layer of electrical isolation and prevent shorting. While very similar to conformal coatings, these systems have superior dielectric properties, which makes them a better choice for applications like insulating windings and coils.

Application

Red insulating varnish is an alkyd resin with exceptional dielectric strength, used to electrically isolate conductors in windings and coils. It is applied like a conventional paint, by dipping, brushing and spray. However, the sheer size of some motors renders these methods unfeasible. In such circumstances, vacuum impregnation is employed, where large vacuums transfer liquid resin from a holding tank to a coating chamber, essentially encapsulating exposed wires.

Specification

Varnishes are basically four classes of insulation – A, B, F and H – class F being the most commonly used. These insulation classes were established to meet motor temperature requirements found in industrial applications Global Connection we understand that our winders need the best insulation class varnish for their motors and transformers so we have only H class varnishes.

Packing Sizes

The varnishes are available in different sizes

Euro Varnish-Available in packing sizes of 1 Ltr and 5 Ltr

Drbeck Elantas-Available in packing sizes of 1 Ltr ,5 Ltr and 21 Ltr

Elantas Italy-Available in packing sizes of 5 Ltr

Ultimeg AEV-Available in packing sizes of 5 Ltr

Colour

Euro Varnish-Available in colour Golden only.

Drbeck Elantas-Available in Golden only.

Elantas Italy-Available in Golden,Red(VA42).

Ultimeg AEV-Available in Golden,Red,Clear .

Special Varnishes-Compressor and Impregnating Varnishes

We also have compressor and Impregnating Varnish

Compressor Varnish-Available in Ultimeg and Elantas Brand in 5L Packing

Impregnating Varnish-Available in Ultimeg in 5 L packing.

Euro Varnish 5 Ltr and 1 Ltr

Euro Varnish 1 ltr and 5 Ltr variant air drying, anti-tracking varnish provides tough, impervious seal in tropical environments. It dries quickly to give very effective sealing off electrical leakage together with noise reduction characteristics

Ultimeg Range of Varnishes

The range of anti-flash ULTIMEG 2000-372 varnish provides a durable, insulating and waterproof seal in difficult environmental conditions.

Elantas Dr Beck India range of varnishes

Elmo Luft 1A Golden is preferably used for protecting 1) Motors 2) Synthetic resin 3) Circuit boards, bonded phenolic laminates 4) Stamping stacks 5) Transformer oil tanks 6) Suggested for impregnation of small motors during repairs and rewinding.