Through varying several attributes such as:
Technical data
- direction of lamination
- resin coating
- density
we are able to produce dehonit® qualities, that meet your specific requirement.
For a personal advice please do not hesitate to contact us.
dehonit® Material Grades for Transformer Industry
Parallel | Parallel | Parallel | Crosswise | Crosswise | Crosswise | Tangential* | Tangential* | |||
---|---|---|---|---|---|---|---|---|---|---|
Quality | E 885-8 | E 825-8 | A 735-1 | B 895-8 | B 825-8 | B 735-1 | D 795-8 | D 725-8 | ||
IEC 61061 | P1R | P4R | - | C2R | C4R | - | T2R | T4R | ||
DIN 7707 | KP20212 | KP20214 | KP20218 | KP20222 | KP20224 | KP20228 | KP20242 | KP20244 | ||
Mechanical Properties | Unit | Standard | ||||||||
Specific weight | g / cm³ | IEC 61061 | 0,7-0,9 | 1,2-1,3 | 1,3-1,4 | 0,9-1,1 | 1,2-1,3 | 1,3-1,4 | 0,9-1,1 | 1,2-1,3 |
Flexural strength I II |
N / mm² | DIN EN ISO 178 |
150 | 200 | 220 | 120 | 140 | 150 | 130 | 180 |
Flexural strength I II |
PSI | DIN EN ISO 178 |
21.750 | 29.000 | 31.900 | 17.400 | 20.700 | 21.750 | 18.850 | 26.100 |
Modulus of elasticity I |
N / mm² | DIN EN ISO 178 |
14.000 | 17.000 | 18.500 | 11.000 | 13.000 | 15.500 | 14.000 | 16.000 |
Modulus of elasticity I |
PSI | DIN EN ISO 178 |
2,0x106 | 2,5x106 | 2,7x106 | 1,6x106 | 1,9x106 | 2,2x106 | 2,0x106 | 2,3x106 |
Compressive strength I |
N / mm² | DIN EN ISO 604 |
100 | 130 | 180 | 200 | 240 | 270 | 130 | 160 |
Compressive strength I |
PSI | DIN EN ISO 604 |
14.500 | 18.850 | 26.100 | 29.000 | 34.800 | 39.150 | 18.850 | 23.200 |
Compressive strength II |
N / mm² | DIN EN ISO 604 |
55 | 100 | 170 | 70 | 90 | 180 | 80 | 110 |
Compressive strength II |
PSI | DIN EN ISO 604 |
7.900 | 14.500 | 24.650 | 10.150 | 13.050 | 24.100 | 11.600 | 15.950 |
Tensile strength II |
N / mm² | DIN EN ISO 527 |
120 | 170 | 185 | 80 | 100 | 100 | 110 | 150 |
Tensile strength II |
PSI | DIN EN ISO 527 |
17.400 | 24.650 | 26.825 | 11.600 | 14.500 | 14.500 | 15.950 | 21.750 |
Impact strength I |
kJ / m² | DIN EN ISO 179 |
46 | 56 | 40 | 33 | 37 | 15 | 40 | 52 |
Impact strength II |
kJ / m² | DIN EN ISO 179 |
40 | 50 | 32 | 28 | 33 | 12 | 36 | 48 |
Electrical strength at 20°C II |
kV/25 mm |
IEC 60 243 |
70 | 70 | 45 | 70 | 70 | 45 | 80 | 80 |
Electrical strength at 90°C II |
V/25 mm |
IEC 60 243 |
70 | 70 | 32 | 70 | 70 | 32 | 70 | 70 |
Insulation resistance after treatment | Ω cm | IEC 60 093 |
1012 | 1012 | 1011 | 1012 | 1012 | 1011 | 1012 | 1012 |
Dielectric loss factor at 50Hz 20° C | tan δ | DIN 53 483 |
0,01 | 0,01 | 0,01 | 0,01 | 0,01 | 0,01 | 0,01 | 0,01 |
Physical properties | Unit | Standard | ||||||||
Oil absorption | % | IEC 61 061 |
30 | 10 | < 2 | 25 | 10 | < 2 | 25 | 10 |
Thermal conductivity at 20° C | W / mK | DIN 52 612 |
0,2 | 0,2 | 0,3 | 0,2 | 0,2 | 0,3 | 0,2 | 0,2 |
Operating temperature continuous | ° C | - | 105 | 105 | 90 | 105 | 105 | 90 | 105 | 105 |
Temperature limit for drying and impregnating | ° C | - | 140 | 130 | 100 | 140 | 130 | 100 | 140 | 130 |
Test samples taken from the main fiber direction.
* The mechanical values are based on an average ring diameter.
The above values are mean test results.
I = vertical
II = parallel