Etronit B 66 - Tubes

Components: Paper - Phenolic  Back
Colour: Dark brown  
Serial No: 630  
IEC 61212: PF CP 22 Print version
DIN 7735: Hp 2066  
NEMA LI 1: XX  
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Mechanical properties
  Testmethod Dimension Value Unit  
Flexural strength ISO 178 id>100 mm 120 MPa * 1
Compressive strength axial ISO 604   130 MPa * 1
Cohesion between layers IEC 61212-2 4.3 id<100 mm 150 MPa * 1
 Electrical properties   Testmethod Dimension Value Unit  
Electric strength in oil at 90°C IEC 243-1 B)3,0 mm 10,0 kV/mm * 2
Electric strength in oil at 90°C IEC 243-1 B)>3,0 mm 50 kV/25mm * 2
Permittivity 50 Hz   IEC 250 5,0   * 3
Permittivity 1 MHz   IEC 250 -   -
Dissipation factor 50 Hz   IEC 250 0,04   * 3
Dissipation factor 1 MHz   IEC 250 -   -
Insulation resistance after immersion in water   IEC 167 A) 10 * 4
Physical and thermal properties
  Testmethod Dimension Value Unit  
Thermal endurance index 20.000 h   IEC 216 ≥3,0 mm 120 T.I. -
Density   IEC 1183-A All 1,15 g/cm3 * 1
Water absorption   IEC 62-1 50x50x3 mm 4,5 mg/cm2 * 4
 Characteristics and applications
Specially designed for high-voltage insulation with high requirements for insulating capacity along the tube. Insulating tubes in high-voltage switchgear and tap changers.
Notes:
A) id > 8mm. and/or od > 10 mm.
B) Wall thickness
C) 230 MPa measured at 150°C
* Conditioning:
1: 24h/23°C/ 50%RH
2: 24h/23°C/ 50%RH + 1 h i Oil 90°C
3: 96h/105°C + 1h/23°C/20%RH
4: 24h/50°C + 24h water 23°C

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