Etronax P EP - Sheet

The material is distinguished by being strong and tough. Very low water absorption and lowest swelling in water. High chemical resistance.

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Specifications

  • Resin: Epoxy
  • Reinforcement: Polyester fabric
  • Colour: Yellow

Closest relevant standards

IEC 60893:EP PC 301

NEMA LI 1:-

DIN 7735:-

Etronax P EP - Sheet

Conforms to EP PC 301. P EP is the variant in the Etronax series with the best-performing electrical properties, unlike the rest of the range, which is chosen for its mechanical performance. The combination of polyester fabric and epoxy resin gives low friction and high wear resistance. It is used mainly in the electrotechnical industry, in equipment involving SF6 gas (such as high-voltage circuit breakers).

Etronax P EP vs. glass-based epoxy materials

Etronax P EP is comparable to multiple glass-based epoxy materials. The difference that matters is chemical rather than mechanical. When an arc forms in SF6 gas, such as inside a circuit breaker, it can produce hydrofluoric acid, which dissolves glass and destroys glass-reinforced G-Etronax. P EP's polyester reinforcement is not attacked by hydrofluoric acid, which is why it is used instead of G-Etronax in this specific application.

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Properties

Friction-reducing

Suitable for components where frictional and rolling resistance may occur.

Durable

Resistant material with long service life.

Low density

The compact structure of the material optimises its mechanical and electrotechnical properties.

Electrotechnical properties

Suitable for electrical insulation and other electrical applications.

Overview

Mechanical properties
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 4500 MPa *1
Compressive strength ISO 604 ≥ 5 mm 450 MPa *1
Izod impact strength, parallel with layers ISO 180/2A ≥ 5 mm 50 Kj/m2 *1
Shearing strength, parallel IEC 60893-2 ≥ 5 mm 35 MPa *1
Tensile strength ISO 527 ≥ 1,6 mm 135 MPa *1
Electrical properties
Electrical strength in oil at 90°C, perpendicular IEC 60243-1 3 mm 20 kV/mm *2
Electrical strength in oil at 90°C, parallel IEC 60243-1 ≥ 3 mm 70 kV/25mm *2
Permitivity 50 MHz IEC 62631-2-1 ≤ 3 mm 4 *3
Permitivity 1 MHz IEC 62631-2-1 ≤ 3 mm *
Dissipation factor 50 MHz IEC 62631-2-1 ≤ 3 mm 0.01 *3
Dissipation factor 1 MHz IEC 62631-2-1 ≤ 3 mm *
Insulation resistance after submersion in water IEC 62631-3-3 All 100000 MΩ *4
Comparative tracking index IEC 60112 ≥ 3 mm 200 CTI *1
Physical and thermal properties
Temperature index 20,000 h (T.I.) IEC 60216 ≥ 3 mm 130 °C *
Fire class IEC 60695-11-10 *
Density ISO 1183-A All 1.35 g/cm³ *
Water absorption ISO 62-1 50x50x3 mm 20 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 *

Conditioning

1 24h/23°C/50%RH
2 24h/23°C/50%RH + 1h/ in oil at 90°C
3 96h/105°C + 1h/23°C/20%RH
4 24h/50°C/<20% RH + 24h in water at 23°C

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.