
BS EN 62058-21. Electricity metering equipment (AC). Acceptance inspection. Part 21. Particular requirements for electromechanical meters for active energy (classes 0.5, 1 and 2)
出版:British Standards Institution

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? British Standards Institution 2013
General notes:
This Draft for Public Comment is no longer current as its expiry date for comments has passed. It is not available for order.