BS 3057:1958
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
Specification for untreated asbestos paper for electrical purposes
Hardcopy , PDF
English
31-12-1958
15-08-1995
Co-operating organizations
Foreword
Specification
1 Scope
2 Classification
3 Thickness
4 Surface
5 Substance
6 Electric strength
7 Freedom from conducting paths
8 Tensile strength
9 Bursting strength after ageing
10 Moisture content
11 Loss of weight on ignition after drying
Appendices
A Conditioning of specimens for test
B Method for determination of thickness
C Method for determination of substance
D Method for the determination of electric strength
E Method for carrying out test for conducting paths
F Method for the determination of tensile strength
G Method for the determination of bursting strength
after ageing at 150 deg C
H Method for the determination of moisture content
J Method for the determination of loss of weight on
ignition
K Description of a suitable oven for ageing paper
L Details of improved testers for the measurement of
bursting strength
Two types depending on amount of organic binder; second type has greater mechanical strength and minimum number of conducting paths. Thicknesses 5 to 10 mils, surface finish. Tests for thickness, substance, electric strength, tensile strength, bursting strength after ageing, moisture content, freedom from conducting paths, loss of weight on ignition.
| Committee |
GEL/15
|
| DocumentType |
Standard
|
| Pages |
31
|
| PublisherName |
British Standards Institution
|
| Status |
Withdrawn
|
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