Etronit B 66 - Tubes

Especially intended for high-voltage insulation with strict insulation property requirements in the longitudinal direction of the tube – in parallel with the layer direction in the tube. Insulation tubes in high-voltage switches and on-load tap changers.

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Specifications

  • Resin: Phenol
  • Reinforcement: Paper
  • Colour: Brown

Closest relevant standards

IEC 60893:PF CP 22

NEMA LI 1:XX

DIN 7735:Hp 2066

Etronit B 66 - Tubes

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Overview

Mechanical properties
Bending strength ISO 178 id>100 mm 120 MPa *1
Compressive strength, axial ISO 604 130 MPa *1
Cohesion between layers IEC 61212-2 id<100 mm 150 MPa *1
Electrical properties
Electrical strength in oil at 90°C, perpendicular IEC 60243-1 B) 3 mm 10 kV/mm *5
Electrical strength in oil at 90°C, parallel IEC 60243-1 B) ≥ 3 mm 50 kV/25mm *5
Permitivity 50 MHz IEC 62631-2-1 5 *3
Permitivity 1 MHz IEC 62631-2-1 *
Dissipation factor 50 MHz IEC 62631-2-1 0.04 *3
Dissipation factor 1 MHz IEC 62631-2-1 *
Insulation resistance after submersion in water IEC 62631-3-3 10 MΩ *4
Comparative tracking index IEC 60112 ≥ 3 mm CTI *
Physical and thermal properties
Temperature index 20,000 h (T.I.) IEC 60216 ≥ 3 mm 120 °C *F
Fire class IEC 60695-11-10 *
Density ISO 1183-A All 1.25 g/cm³ *
Water absorption ISO 62-1 4.5 mg/cm² *
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
3 96h/105°C + 1h/23°C/20%RH
4 24h/50°C/<20% RH + 24h in water at 23°C
5 96h/105°C + 1h/ in oil at 90°C

Notes

F Tested on sheet material

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.