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BS 4963:1973
M00000263
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BS 4963:1973 Specification for tests on hollow insulators for use in high voltage electrical equipment
standard by BSI Group, 10/20/1973
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Routine tests: visual inspection, electrical. Sample tests: verification of dimensions, porosity, temperature cycle. Re-test procedure. Appendix: dimensional tolerances of porcelain insulators.Replaced by BS EN 62155:2003 but remains current.