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Mica tubes, with different impregnations.
| Type | Description | Resin |
| E180 | Mica tube with high mechanical strength and low water adsorption. | Epoxy |
| E180R | Reinforced mica tube equipped with glass cloth for extra mechanical strength and protection against sanding. | Epoxy |
| S250 | Reinforced mica tube fitted with layers of glass cloth for extra mechanical strength and protection from sanding. | Silicone |
| S250R | Reinforced mica tube wrapped with glass cloth for enhanced mechanical properties. | Silicone |
| S650 | Mica tube with low flammability and offers good protection against peeling and delamination. | Silicone |
| Type | Heat class | Electric strength at 90 °C in oil across the slats | Electric strength at 90 °C in oil in line with the slats |
| E180 | 180 °C* | 35-40 kV | 14-16 MV/m |
| E180R | 180 °C* | 36-40 kV | 14-16 MV/m |
| S250 | 250 °C | 18-20 kV | 10-12 MV/m |
| S250R | 250 °C | 22-26 kV | 8-12 MV/m |
| S650 | 650 °C | 22-26 kV | 10-12 MV/m |
| * application dependent |
| Type | Breakdown voltage (in air, 25 mm long) | Insulation resistance after 24 hours in water | Density | Water adsorption |
| E180 | 18 kV | 150 Mohm | 1.6 mg/m2 | 0.8 mg/cm2– 1.2 mg/cm2 |
| E180R | 20 kV | 150 Mohm | 1.4 mg/m2 | 0.8 mg/cm2– 1.2 mg/cm2 |
| S250 | 18 kV | 2 Mohm | 1.8 mg/m2 | 1.0 mg/cm2– 1.5 mg/cm2 |
| S250R | 18 kV | 1 Mohm | 1.8 mg/m2 | 1.5 mg/cm2– 2.0 mg/cm2 |
| S650 | 18 kV | 1 Mohm | 1.8 mg/m2 | 1.5 mg/cm2– 2.0 mg/cm2 |
Actual specifications may differ from those stated on this website. No rights can be derived from the specifications stated on this website.