18千瓦.加5千瓦.加1.5千瓦.加3千瓦四个三相电动机.60a的控开能匹配
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2\u3001\u7535\u52a8\u673a\u7531\u53d1\u7535\u673a\u76f4\u63a5\u4f9b\u7535\uff1a\u5141\u8bb8\u76f4\u63a5\u8d77\u52a8\u7684\u7535\u52a8\u673a\u5bb9\u91cf\u53ef\u6309\u6bcf\u5343\u4f0f\u5b890.1KW\u8ba1\u7b97\uff0c\u5373\u6bcf\u5343\u4f0f\u5b89\u5bb9\u91cf\u4e3a1\u5343\u4f0f\u5b89\u7684\u53d1\u7535\u673a\u53ef\u76f4\u63a5\u8d77\u52a80.1KW\u57f9\u7684\u7535\u52a8\u673a\u3002
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一、按4台电动机同时运行，选配总开关和电源线，计算总功率：
P总＝（18000+5000+1500+3000）＝27.5KW
Ijs=P/U/√3/cosφ=27500/380/1.732/0.8=52.2A；
选择断路器的额定电流应大于线路计算电流的1.2~1.5倍，In=1.2Ijs=1.2×52.2=62.2A
可选用63A的塑壳式断路器比较合适，如：DCM1-100L/3300 In=63A。
选用交联铜芯电缆YJV-3×10+2×6，它的安全载流量是65A。
二、四台电动的分别配置：
18KW电机配置：断路器DCM1-63L/3300 In=40A，电缆：YJV-3×6+1×4；
5KW电机配置：断路器DZ47-63/3P In=16A，电缆：VV-3×4+1×2.5；
3KW电机配置：断路器DZ47-63/3P In=10A，电缆：BV-4×2.5；
1.5KW电机配置：断路器DZ47-63/3P In=5A，电缆：BV-4×2.5。
三、不知你是什么电气设备，做什么用的，还需要什么控制要求和保护？我们可以再讨论。
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