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1.8/3KV to 18/30KV IEC60502 Standard Cable Products IEC60502 standard cables are designed for power distribution from 1.8/3 KV to 18/30 KV at 50 Hz and are mainly used for cable installations in power stations, indoor conduits, outdoor, underground and submarine waters, as well as in industrial, distribution and power stations. ZMS has absolutely thirty years of experience in the production of cables according to IEC standards. Our popular standards 60502, 60228, 60332, etc. have withstood both customer and test validation with high pass rates. Please feel free to contact us.