IEC 60674-2:2016

FOREWORD
INTRODUCTION
1 Scope
2 Normative references
3 General notes on tests
4 Thickness
5 Density
6 Width
7 Windability (bias/camber and sag)
8 Surface roughness
9 Space factor
10 Coefficient of friction
11 Wetting tension (polyolefine films)
12 Tensile properties
13 Edge tearing resistance
14 Tear resistance
15 Stiffness of film
16 Surface resistivity
17 Volume resistivity
18 Dissipation factor and permittivity
19 Dissipation factor under impregnated conditions
20 Electric strength
21 Electrical weak spots
22 Resistance to breakdown by surface discharges
23 Electrolytic corrosion
24 Melting point
25 Dimensional change
26 Dimensional stability under tension with rising
   temperature
27 Dimensional stability under pressure with rising
   temperature
28 Resistance to penetration at elevated temperature
29 Volatile content (loss of mass on heating)
30 Thermal endurance
31 Burning characteristics
32 Water absorption in a damp atmosphere
33 Absorption of liquid
34 Ionic impurities
35 Effect of insulating varnishes
36 Effect of polymerisable resinous compounds in
   a liquid state

IEC 60674-2:2016 is applicable to plastic films used for electrical purposes. This part of IEC 60674 gives methods of test. This second edition cancels and replaces the first edition published in 1988 and Amendment 1 (2001). This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
- this document was completely revised editorially and technically and included in the IEC 60674 series of standards;
- the test methods are updated to reflect today's state of the art;
- a method to obtain DC electric strength is now specified according to IEC 60243-2. Keywords: plastic films for electrical purposes
The contents of the corrigendum of December 2017 have been included in this copy.