BS 7741(1994) : AMD 8959
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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SPECIFICATION FOR INSULATING HOLLOW TUBES FOR ELECTRICAL PURPOSES
15-12-1995
23-11-2012
Committees responsible
National foreword
Section 1. General
1. Scope
2. Normative references
3. Definitions
4. Classification
Section 2. Technical characteristics
5. Materials
6. Diameters of tubes
Section 3. Type tests
7. General
8. Visual inspection and dimensional check
9. Dielectric tests
10. Mechanical tests
11. Mechanical fatigue tests
Section 4. Routine tests and sampling tests
12. Routine tests
13. Sampling tests
14. Additional tests not indicated
Section 5. Special clauses
15. Marking
16. Modification
17. Acceptance
Annexes
A. (normative) Dielectric tests before and after
exposure to humidity
B. (normative) Dielectric wet test
C. (normative) Mechanical tests
D. (normative) Routine tests
E. (normative) Sampling procedure
F. (informative) Acceptance tests
Tables
1. Preferred diameters
2. Number of lengths of tubes required for tests
3. Tests results
4. Category reinforced: Values of Fd, f and Fr for
bending test
5. Category standard: Values of Fd, f and Fr for
bending test
6. Category light: Values of Fd, f and Fr for bending
test
7. Categories reinforced and standard: Values of Cd,
ad, and Cr for torsion test
8. Category light: Values of Cd, ad and Cr for torsion
test
9. Values of Fc and Fi for crush test
E.1 Classification of defects
E.2 Sampling plan for major defects
Figures
A.1 Test arrangement
A.2 Assembly diagram
A.3 Constructional drawing for guard electrodes
A.4 Constructional drawing for guard electrodes, parts
A and B
A.5 Constructional drawing for guard electrode parts
according to test-piece diameter
B.1 Test arrangement
B.2 Details of electrode arrangement
C.1 Bending test - test assembly
C.2 Bending test - detail of supports
C.3 Torsion test - Examples for fixing tubes
C.4 Crushing test
D.1 Typical test arrangement
Applies to insulating tubes made of a synthetic material and meant for tools and equipment for work on systems operating at voltages above 1 kV. Coverage includes definitions, materials, mechanical tests, marking, modification and acceptance. Also gives tables, diagrams and annexes. AMD 8959 RENUMBERS THIS STANDARD
| Committee |
PEL/88
|
| DevelopmentNote |
Superseded and renumbered by BS EN 61235 (07/2004)
|
| DocumentType |
Standard
|
| PublisherName |
British Standards Institution
|
| Status |
Superseded
|
| SupersededBy |
| Standards | Relationship |
| IEC 61235:1993 | Identical |
| BS EN 61219:1994 | Live working. Earthing or earthing and short-circuiting equipment using lances as a short-circuiting device. Lance earthing |
| IEC 60212:2010 | Standard conditions for use prior to and during the testing of solid electrical insulating materials |
| IEC 60050-151:2001 | International Electrotechnical Vocabulary (IEV) - Part 151: Electrical and magnetic devices |
| IEC 60743:2013 | Live working - Terminology for tools, devices and equipment |
| IEC 60410:1973 | Sampling plans and procedures for inspection by attributes |
| IEC 60060-1:2010 | High-voltage test techniques - Part 1: General definitions and test requirements |
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