Low voltage distribution systems up to 1000 V a.c. and 1500 V d.c. Electrical safety. Equipment for testing, measuring or monitoring of protective measures. Part 4. Resistance of earth connection and equipotential bonding
State system for ensuring the uniformity of measurements. Mass of hydrocarbon condensate, liquefied hydrocarbon gas and long distillate of light hydrocarbons. General requirement for procedure (methods) of measurements
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