Phenolic paper sheets

Sheets are made of cellulose paper as reinforcement and phenol formaldehyde resins as a binder.

Application: Insulating walls in transformers construction, various structural elements, covers, inserts. For high electrical and mechanical strength are these materials suitable for production of insulating rods and electrical switchboards components.

 

Typ dle EN-60893 Unit PFCP 201PFCP 202PFCP 206EPCP 201
Used name Kartit Kartit Kartit Melamin FR3
Type according to DIN 7735 Hp 2061 Hp 2061.5 Hp 2062.8 Hp 2361.1   Hp 2361
Type according to NEMA X   /   XP XX XXXPC FR-3
Reinforcement Paper Paper Paper Paper
Resin phenol phenol phenol epoxid
           
Mechanical properties          
Flexural strength flatwise perpendicular to laminations (at 20°C) MPa 230 200 190 210
Modulus of elasticity in flexure MPa 13x103 12x103 9x103 9x103
Tensile strength MPa 180 160 120 140
Compressive strength perpendicular to laminations MPa 390 360 250 160
Notch impact strength parallel to lamination (Charpy) KJ/m2 - - -   -
Shearing strength parallel to laminations MPa 35 30 45   -
           
Dielectric properties          
Dielectric strength perpendicular to layers in oil 90°C kV/mm - 16,7 8,6 20
Breakdown voltage parallel to laminations
KV  - 75 35     -
Dissipation factor tg                                      
-    at 50 Hz   -    - - 0,05
-    at 1 MHz   - 0,05 0,035 0,05
Permittivity at 1 MHz   - 4,8 4,4 5
Comparative tracking index (CTI)   180 150 200 100
Insulation resistance after immersion in water MΩ -    - 2,5x102 1x104
           
Physical properties          
Density g/cm3 1,3 - 1,4 1,3 - 1,4 1,3 - 1,4 1,3 - 1,4
Temperature index (TI)   120 120 120 120
Water absorption (for thickness 3mm) mg 248 260 58 51
Flammability (category)      -    -    - V0
News
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After a two-year break from the covid, in May we were able to participate again in the traditional domestic fair AMPER, which took place from 17.5. to 20.5.2022. Two years…
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Due to the pandemic, Hungary's largest trade and industrial meeting last year could only take place in a virtual space, so this year's personal meeting was especially…
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