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Overview - IEC 62053-21:2003 (Static watt‑hour meters, classes 1 & 2) IEC 62053-21:2003 specifies the particular requirements and type‑test procedures for newly manufactured static watt‑hour meters (…
Overview IEC 62053-21:2020 is an international standard specifying the particular requirements for static watt-hour meters measuring alternating current (AC) active energy. It applies to meters of ac…