What is the measurement accuracy of power meters required by Green Mark?

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What is the measurement accuracy of power meters required by Green Mark?

There is no specific level set for power measurement in Green Mark, but the overall measurement uncertainty has to be within ±5%. It is recommended to have at least a minimum accuracy class of 1 for the power meters and an accuracy class of 0.5 for the current transformers. These are common specifications for power meter and current transformer in the market.

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