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High-voltage insulation material at grid frequency. High disruptive voltage in oil and fair disruptive voltage in air at normal humidity. Insulation material in high-voltage transformers and on-load tap changers.
Closest relevant standards
IEC 60893:PF CP 202
NEMA LI 1:XX
DIN 7735:Hp 2061.5
Conforms to PF CP 202 and has a temperature index of 120°C, CTI 100. Positioned specifically as a high-voltage insulation material at grid frequency, used in transformers and on-load tap changers, offering high disruptive voltage in oil and fair disruptive voltage in air at normal humidity.
The main difference between Etronit I and Etronit II is not in their core electrical ratings but in their intended use and moisture behaviour. Etronit I is positioned specifically for high-voltage insulation at grid frequency in transformers and on-load tap changers, while Etronit II is the more general-purpose grade, used in mechanical and electrical constructions at normal humidity, where it offers somewhat better electrical performance than other variants in the range. Etronit II also has a lower water absorption than Etronit I (110 mg vs. 120 mg) and a marginally higher bending strength (160 MPa vs. 150 MPa).
| Mechanical properties | Test method | Thickness | Value | Unit | Note |
|---|---|---|---|---|---|
| Bending strength at RT | ISO 178 | ≥ 1,5 mm | 150 | MPa | *1 |
| Bending strength at a high temperature | ISO 178 | ≥ 1,5 mm | MPa | * | |
| Modulus of elasticity | ISO 178 | ≥ 1,5 mm | 8000 | MPa | *1 |
| Compressive strength | ISO 604 | ≥ 5 mm | 300 | MPa | *1 |
| Izod impact strength, parallel with layers | ISO 180/2A | ≥ 5 mm | 3.5 | Kj/m2 | *1 |
| Shearing strength, parallel | IEC 60893-2 | ≥ 5 mm | 35 | MPa | *1 |
| Tensile strength | ISO 527 | ≥ 1,6 mm | 110 | MPa | *1 |
| Electrical properties | Test method | Thickness | Value | Unit | Note |
|---|---|---|---|---|---|
| Electrical strength in oil at 90°C, perpendicular | IEC 60243-1 | 3 mm | 13.3 | kV/mm | *2 |
| Electrical strength in oil at 90°C, parallel | IEC 60243-1 | ≥ 3 mm | 60 | kV/25mm | *2 |
| Permitivity 50 MHz | IEC 62631-2-1 | ≤ 3 mm | 5 | *3 | |
| Permitivity 1 MHz | IEC 62631-2-1 | ≤ 3 mm | * | ||
| Dissipation factor 50 MHz | IEC 62631-2-1 | ≤ 3 mm | 0.03 | *3 | |
| Dissipation factor 1 MHz | IEC 62631-2-1 | ≤ 3 mm | * | ||
| Insulation resistance after submersion in water | IEC 62631-3-3 | All | 50 | MΩ | *4 |
| Comparative tracking index | IEC 60112 | ≥ 3 mm | 100 | CTI | *1 |
| Physical and thermal properties | Test method | Thickness | Value | Unit | Note |
|---|---|---|---|---|---|
| Temperature index 20,000 h (T.I.) | IEC 60216 | ≥ 3 mm | 120 | °C | * |
| Fire class | IEC 60695-11-10 | * | |||
| Density | ISO 1183-A | All | 1.35 | g/cm³ | * |
| Water absorption | ISO 62-1 | 50x50x3 mm | 120 | mg | * |
| Smoke emission & toxicity | EN 45545-2; R22, R23 & R24 | * | |||
| Oxygen Index (OI) | EN ISO 4589-2 | % | |||
| Smoke density (Ds max.) | EN ISO 5659-2 | * | |||
| Smoke density (Ds max.) | EN ISO 5659-2 | * | |||
| Toxicity (CITNLP) | NF X 70-100-1/-2 | * | |||
| Toxicity (CITG, 8 min) | EN 17084 | * |
The above values are average values resulting from extensive tests in our laboratories. ELEKTRO-ISOLA A/S disclaims any and all liability for the performance of our materials in applications outside our control. Elektro-Isola A/S reserves the right to modify the above data without notice or further information. Furthermore, we refer to our general disclaimer.
* Note that color and surface are indicative. As this is a technical product, colour and expression may vary according to dimensions, batches and machining. If you want further information or have special decorative needs, please feel free to contact us.
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