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Chinese National Standards
中華民國國家標準
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"21：Static" CNS Standards List

C-Electrical Engineering
CNS 62053-21    2021 Edition
Electricity metering equipment − Particular requirements − Part 21：Static meters for AC active energy (classes 0.5, 1 and 2)
電計量設備－特定要求－第21部：交流有效電能用電子式瓦時計(0.5級、1級及2級)

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