BS 7290-2(1990) : 1990 AMD 10106
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
PLASTICS FILMS FOR ELECTRICAL PURPOSES - METHODS OF TEST
10-15-1998
11-23-2012
Committees responsible
National foreword
Specification
1. General
2. Designation
3. General requirements
4. Dimensions
5. Properties
6. Roll characteristics for all types
Tables
1. Nominal thickness and permitted range of thickness
2. Property requirements for all types
3. Property values for all types
4. Electric strength (a.c. test) for all types
5. Maximum permissible number of joins per roll
6. UntitledCommittees responsible
National foreword
Methods
Introduction
1. Scope
2. General notes on tests
3. Thickness
4. Density
5. Width
6. Windability (bias/camber and sag)
7. Surface roughness
8. Coefficient of friction
9. Wetting tension (polyolefine films)
10. Tensile properties
11. Edge tearing resistance
12. Tear resistance
13. Stiffness of film
14. Surface resistivity
15. Volume resistivity
16. Dissipation factor and permittivity
17. Dissipation factor under impregnated conditions
18. Electric strength
19. Electrical weak spots
20. Resistance to breakdown by surface discharges
21. Electrolytic corrosion
22. Melting point
23. Dimensional change
24. Dimensional stability under tension with rising
temperature
25. Dimensional stability under pressure with rising
temperature
26. Resistance to penetration at elevated temperature
27. Volatile content (loss of mass on heating)
28. Thermal endurance
29. Burning characteristics
30. Water absorption in a damp atmosphere
31. Absorption of liquid
32. Ionic impurities
33. Effect of insulating varnishes
34. Effect of polymerisable resinous compounds in a
liquid state
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