Transformer varnish
Air-drying transformer varnish
Class F (155 °C), dip, pour or spray.
Baking transformer varnish
Class F and H; polyester, epoxy or PU.LV and MV transformer varnishes
For low and medium voltage transformers.
Variac varnish
120–200 °C, colourless, no sediment.Variac paste
Filling paste for variac surfaces.
Pole and insulation paints
For poles and connections.Transformer exterior paints
Outdoor protection for the tank.
Transformer varnishes: After the transformer winding phase is completed, it is used to protect from external factors, to provide electrical isolation in the systems where transformers are located, and to reduce the sound and vibration that occurs during the use of transformers.
It is frequently used in transformer types such as Small and Medium Voltage Transformers, Shunt Reactors, Voltage Regulator Transformers, Choke Coils and adds value to the final product depending on the varnish type used.
We can examine transformer varnish types under 2 general headings:
Air Drying Transformer Varnishes:
These types of varnishes dry with the humidity of the air. They are generally used in transformers with low voltage current.
They can be applied by dipping, pouring and gun.
They can be produced in all color types and as concealer/transparent in line with the demands of our customers.
It has F class (155) degree isolation value.
Oven Dry Transformer Varnishes:
This type of oven varnish is known as oven cured or oven varnish. Unlike air-drying varnishes, they are cured by heat.
The biggest features of this type of products can be produced as polyester - epoxy - polyurethane upon the requests of the customers.
Another feature of kiln-dry varnishes is their hard (bony), resistant to chemical and field conditions after firing.
In this way, they provide high protection especially outdoors or in environments with high cold and hot changes.
It is produced as Class F ( 155) and Class H ( 180) degrees for general use. Color is transparent yellow. However, many manufacturers make many "special" requests such as color, density, film thickness, gloss, according to their customers and production standards. Such requests are carefully listened to by our company. Our customers are offered the products they want, in the form of packaging they want.
Please contact us for our TDS - MSDS and Reference list.
In addition, as Orhun Kimya, we produce Transformer Insulation Resins, Exterior Paints, Variac Varnishes, Variac Pastes, Pole Insulation Paints.
Product groups
- Air Drying Transformer Insulation Varnishes
- Oven Dry Transformer Insulation Varnishes
- Low and Medium Voltage Type Transformer Insulation Varnishes
- Pole and Insulation Paints
- Transformer Exterior Paints
- Variac Varnishes
- Variac Pastes
Technical information
| Use | Low and medium voltage (LV / MV) transformer windings |
|---|---|
| Curing | Air-drying or baking options |
| Thermal class | Chosen to match the transformer; per product in the TDS |
| Complementary products | Pole and insulating paints, transformer exterior paints |
Drying time, viscosity and pack sizes are given in the product TDS.
Questions
Which varnish is used in oil-filled transformers?
A varnish resistant to hot transformer oil. Orchem OR 3xx baking varnishes provide this resistance.
Which class is needed for dry-type transformers?
Dry-type transformers running at high temperature usually need class H (180 °C) varnish. Choose by the class on the transformer's rating plate.
Do you also supply transformer exterior paint?
Yes. We supply transformer exterior paints as well as pole and insulating paints.