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BS 7704:1993

Superseded
Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

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superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

Specifications for silicone liquids for electrical purposes
Available format(s)

Hardcopy , PDF

Superseded date

10-17-2005

Language(s)

English

Published date

11-15-1993

Committees responsible
National foreword
Foreword
Section One - General
1. Scope
2. Description and general properties
3. Safety
4. Storage and maintenance
5. Disposal
6. Packaging and labelling
7. Sampling
Section Two - Test methods
8. Colour and appearance
9. Density
10. Kinematic viscosity
11. Flash-point
12. Fire-point
13. Refractive index
14. Flammability
15. Pour-point
16. Water content
17. Neutralization value
18. Ageing test
19. Breakdown voltage
20. Dielectric dissipation factor, permittivity, d.c.
     resistivity
21. Gassing under electrical stress and ionization
Section Three - Individual specifications
22. Specifications for unused silicone liquids
Sheet 1
Appendix A: Thermometer specifications for the ageing
            test
Figure
Annex ZA (normative) Other international publications
         quoted in this standard with the references of
         the relevant European publications
National annex NA (informative) Cross-references

Guidance on properties, safety, storage, disposal, packaging, labelling and sampling, test methods and a specification sheet.

Committee
GEL/10
DevelopmentNote
Supersedes 84/29795 DC, 84/29796 DC and 84/29797 DC (10/2005)
DocumentType
Standard
Pages
16
PublisherName
British Standards Institution
Status
Superseded
SupersededBy

BS 7713:1993 Guide for the maintenance of silicone transformer liquids
BS 6164:2001 Code of practice for safety in tunnelling in the construction industry

ISO 3016:1994 Petroleum products Determination of pour point
BS 6725:1986 Method for determination of water in liquid dielectrics by automatic coulometric Karl Fischer titration
BS 5737:1979 Method for the measurement of relative permittivity, dielectric dissipation factor and d.c. resistivity of insulating liquids
BS 6664-5:1990 Flashpoint of petroleum and related products. Method for determination of flashpoint by Pensky-Martens closed tester
ISO 5661:1983 Petroleum products Hydrocarbon liquids Determination of refractive index
IEC 60475:2011 Method of sampling insulating liquids
BS 6470:1984 Method for determination of water in insulating oils, and in oil-impregnated paper and pressboard
BS 5797:1986 Methods for measurement of gassing of insulation liquids under electrical stress and ionization
BS 4689:1980 Method for determination of flash and fire points of petroleum products: Cleveland open cup method
BS 5874:1980 Method for determination of the electric strength of insulating oils
BS 4714:1980 Method for laboratory determination of density or relative density of crude petroleum and liquid petroleum products (hydrometer method)

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