Electrical insulating winding paper
GOST 1931-80
Grade: (GOST) ЭН thickness 70, 85 µm.
Format: 500, 670, 750, 1000, 2000 mm.
Description: used for production of electric insulating parts that applied inn transformers and electric appliance of all voltage classification at operating temperature from 120°C.
Technical specification ЭН:
| Parameters | GOST norm |
|---|---|
|
Thickness, µm
| |
|
Density, g/cm3
| |
|
Destructive force, kgf, minimum
- in machine direction - in transverse direction | |
|
Capilary rise Klemm method, mm, average in both directions
| |
|
Breaking strength in case of multiple cross
breaks after thermal treatment in machine direction, number of double cross breaks, minimum | |
|
Ash mass content, %, maximum
| |
|
рН of aqueous extract
| |
|
Humidity, %,
| |
|
Voltage proof of dry paper, kV/mm, minimum
|
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