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Ukuxhumanisa i-insulation ye-low voltage switchgear
Abstract: Ngo-1987, idokhumenti yobuchwepheshe enesihloko esithi “izidingo zokuxhumanisa ukwahlukanisa ku-Supplement 1 kuya ku-iec439″ yabhalwa i-sub Technical Committee ye-International Electrotechnical Commission (IEC) 17D, eyethula ngokusemthethweni ukuxhumanisa ukufakwa ngaphakathi...Funda kabanzi
