Insulation & epoxy parts
Pressboard parts and flexible insulation for transformer windings, and APG epoxy parts for 12–40.5 kV switchgear: contact boxes, wall bushings and post insulators. Made to drawing, samples before order.
Name the part,
or send the drawing.
To quote insulation or epoxy parts we need
- Epoxy parts: type and rating (e.g. contact box 12 kV 1250 A, post insulator 12 kV) or drawing
- Insulation: material, thickness, thermal class and dimensions or drawing
- Insert material and thread, for epoxy parts
- Routine tests required (power frequency, partial discharge)
- Quantity per order and per year
Insulation for
windings and switchgear.
Two different families: cellulose and flexible insulation inside the transformer, and cast epoxy parts in medium-voltage switchgear.
Reference values from the standards and common practice, not a model datasheet. Exact dimensions, ratings and test coverage are confirmed against your drawing.
Epoxy parts for MV switchgear +
| Parts | Contact boxes (spouts), wall bushings, post insulators, sensor housings |
|---|---|
| Ratings | 12, 24 and 40.5 kV; 630 A to 3150 A for contact boxes and bushings |
| Process | APG (automatic pressure gelation) or vacuum casting |
| Routine tests | Power-frequency withstand and partial discharge (measured to IEC 60270) per agreement |
Transformer insulation +
| Pressboard | Sheets and machined or formed parts; IEC 60641 |
|---|---|
| Flexible insulation | DMD and similar composites, thermal class F |
| Formed parts | Spacers, sticks, angle rings and lead-exit parts to drawing |
Records to agree +
| Per lot | Material certificate and dimensional check |
|---|---|
| Epoxy parts | Routine test record per part or per lot, as agreed |
Send a drawing.
Get a price and a sample plan.
- Send the drawing or part number with ratings, standard and yearly quantity.
- We quote within one week: unit price, lead time, packing and sample cost.
- Samples first for new parts, before any production order.
- Small lots welcome. We consolidate bushings, radiators and insulation parts in one shipment.
Parts are made by specialised partner factories in China and inspected before shipment. Which factory, and which routine-test records come with a part, is stated in each quotation.
Send a drawing ↓
Bring your next project
into focus.
Explore the equipment guide and prepare your requirements with our fillable project sheets.