AS 62054.21:2018 pdf free.Electricity metering (AC)-Tariff and load control Part 21: Particular requirements for time switches (IEC 62054-21:2017 (ED.1.1), MOD). 7.5 Functional requirements and tests — accuracy 7.5.1 Time setting and programming 7.5.1.1 Time switches with mechanical analogue dials On a day dial, it shall be possible to set the time with an accuracy better than ±7,5 mm. It shall...