Online Standards Store PDF
Earthing and neutral wire earthing of electric installations. Working drawings
Document status: Active
Regulatory document on standardization. Procedural guidelines. Quality standard for heating and make-up water of hot-water boilers, organization of water chemistry and chemical control
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Recommendation. State system for ensuring the uniformity of measurements. Metrological characteristics of measuring instruments. Nomenclature. Principles for regulatory activity, identification and control
Document status: Active
Maintenance requirements for protective relaying and control system switchgear for 0.4-35 kV networks
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Safety valves. Selection, installation and calculation
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Regulatory document. Water hardness. Measurement technique using trilon B titrimetric method
Document status: Active