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7.5KW-4椤嶅畾闆绘祦澶氬皯

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棣栧厛绲﹀嚭鏍稿績绲愯珫锛�7.5kW銆�4 妤典笁鐩哥暟姝ラ浕鍕曟鐨�椤嶅畾闆绘祦绱勭偤 15A 宸﹀彸锛堝闅涙渻鍥犻浕姗熼鍨嬨€侀浕澹�銆佸姛鐜囧洜鏁�(sh霉)鐣ユ湁宸暟锛�銆�

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椤嶅畾闆绘祦 I = 椤嶅畾鍔熺巼 P / (√3 × 椤嶅畾闆诲 U × 鍔熺巼鍥犳暩(sh霉) cosφ × 鏁堢巼 η)

椤嶅畾鍔熺巼 P = 7.5kW = 7500W
椤嶅畾闆诲 U = 380V锛堜笁鐩革級
鍔熺巼鍥犳暩(sh霉) cosφ锛氱暟姝ラ浕姗熸豢杓夋檪绱� 0.85~0.9
鏁堢巼 η锛�7.5kW 闆绘鏁堢巼绱� 0.88~0.92

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I = 7500 / (1.732 × 380 × 0.88 × 0.9) ≈ 7500 / (1.732×380×0.792) ≈ 7500 / 516.5 ≈ 14.52A

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