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09:1 for propane
BS EN 2591-6307 guides you on the preparation of specimens and provides test methods for assessing the effects of a controlled salt laden atmosphere on optical connection elements and fibre optic couplers
The methods specified by the standard provide results identical to those obtained when using ISO 3651-1 and ISO 3651-2
What is PD IEC TS 62257-9-8 about
Artificial pollution tests on high-voltage ceramic and glass insulators to be used on d.c. systems Ingestion-build-224916 09:1 for propane1 Scope This technical specification is applicable for the determination of the d. c. withstand characteristics of ceramic and glass insulators to be used outdoors and exposed to polluted atmospheres, on d. c. systems with the highest voltage of the system greater than 1 000 V. These tests are not applicable to polymeric insulators, to greased insulators or to special types of insulators (e. g. insulators with semiconducting glaze or covered with any
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