这么全的电气控制电路解读，真不多见~
http://5b0988e595225.cdn.sohucs.com/images/20181210/d2880273cca043078e9cfcef82147627.jpeghttp://5b0988e595225.cdn.sohucs.com/images/20181210/d8fb26063dd6400aa9557a05dc428ee2.jpeghttp://5b0988e595225.cdn.sohucs.com/images/20181210/ad2ed3833f884300bae63109c45962fa.jpeghttp://5b0988e595225.cdn.sohucs.com/images/20181210/eeea0b5195094dcaad912ab7eb90b164.jpeghttp://5b0988e595225.cdn.sohucs.com/images/20181210/7c0ea05e172e4608b177e340fe80a7a6.jpeghttp://5b0988e595225.cdn.sohucs.com/images/20181210/6be39c07d70342aea152628e72af113e.jpeghttp://5b0988e595225.cdn.sohucs.com/images/20181210/680d74678d7841af9d485ac1c444d3fc.jpeg1.1.3 三相交流异步电动机的额定值（1）额定功率（容量）（kW）。指电动机在额定运行状态下，转轴上输出的机械功率。（2）额定电压（V）。指电动机在正常运行时，定子绕组规定使用的线电压。（3）额定电流（A）。指电动机在输出额定功率时，定子绕组允许通过的线电流。（4）额定转速（r/min）。指电动机在额定电压、额定频率及输出额定功率时的转速。（5）额定频率（Hz）。指电动机在额定条件运行时的电源频率。（6）接法。指三相定子绕组的连接方式。在380V的额定电压下，小功率（3kW以下）电动机多为Y形（星形）连接，中、大功率电动机为△形（三角形）连接。1.1.4 三相交流异步电动机的检查与测试（1）机械方面的检查。（2）接线可靠。（3）定子绕组直流电阻的测试。（4）定子绕组绝缘电阻的测试。（5）运行电流的测试。http://5b0988e595225.cdn.sohucs.com/images/20181210/75e2f77bc8a94c84925ab532f488a903.jpeg2．选用方法（1）用于照明和电热负载时，选用额定电压为220V或250V，额定电流稍大于电路所有负载的额定电流之和的两极刀开关。（2）用于电动机直接启动控制时，选用额定电压380V或500V，额定电流大于或等于电动机额定电流3倍的三极刀开关。3．安装与使用（1）必须垂直安装在控制屏或开关板上，不允许倒装或平装，以防止发生误合闸事故。（2）在分断或接通电路时应迅速果断地拉合闸，以使电弧尽快熄灭。（3）由于开启式刀开关没有灭弧装置，其分断电流只能达到额定电流的1/3。http://5b0988e595225.cdn.sohucs.com/images/20181210/b50b3f99afc546be9ef1ab58a56d31a9.jpeghttp://5b0988e595225.cdn.sohucs.com/images/20181210/22864c3bdea849b087f53532d1b07acc.jpeghttp://5b0988e595225.cdn.sohucs.com/images/20181210/8a14aca65bad4a7381e59eb466bf881f.jpeghttp://5b0988e595225.cdn.sohucs.com/images/20181210/47742547a8344ab8b2df37dd07054cf4.jpeghttp://5b0988e595225.cdn.sohucs.com/images/20181210/362a0112e6854c64ab928d1f3ba8b31c.jpeghttp://5b0988e595225.cdn.sohucs.com/images/20181210/1c7ff4af33d146cca9d3c1663f37c58d.jpeghttp://5b0988e595225.cdn.sohucs.com/images/20181210/4c703bd72f58439cb3ede2fca7aea5c0.jpeghttp://5b0988e595225.cdn.sohucs.com/images/20181210/e96b22f5dd914418b5d9e7213cdbafe1.jpeghttp://5b0988e595225.cdn.sohucs.com/images/20181210/03892df518ed43ba9f1f22282d307708.jpeghttp://5b0988e595225.cdn.sohucs.com/images/20181210/7b36caf3c36a4358947911ca2f073bb9.jpeghttp://5b0988e595225.cdn.sohucs.com/images/20181210/6e79221f3dce4ee29003c46e0144fc06.jpeghttp://5b0988e595225.cdn.sohucs.com/images/20181210/864e386272d94b8bad65ca5342b0a1c7.jpeghttp://5b0988e595225.cdn.sohucs.com/images/20181210/ea98145b65c5423393f8f35af37476c7.jpeghttp://5b0988e595225.cdn.sohucs.com/images/20181210/6b385c3fbc114ed184b27c9f69ab4b71.jpeghttp://5b0988e595225.cdn.sohucs.com/images/20181210/ce3f591606534c14a102599eccb77203.jpeghttp://5b0988e595225.cdn.sohucs.com/images/20181210/e9b8d114adfa440b95790de503393386.jpeghttp://5b0988e595225.cdn.sohucs.com/images/20181210/eca1f5db554c434a8538caf9f1bac1f2.jpeghttp://5b0988e595225.cdn.sohucs.com/images/20181210/01ef904d40c84eadb4ec5190b33f57f4.jpeghttp://5b0988e595225.cdn.sohucs.com/images/20181210/3169ebab437844cd8ac419816f21e8ff.jpeghttp://5b0988e595225.cdn.sohucs.com/images/20181210/1ffd65d877814bfc8ee63e1c025ad6a6.jpeghttp://5b0988e595225.cdn.sohucs.com/images/20181210/88f7c9fe626b467c96297b1e62cc6c4a.jpeghttp://5b0988e595225.cdn.sohucs.com/images/20181210/46bf6a01bef14f8eb7e85341f9140cc6.jpeghttp://5b0988e595225.cdn.sohucs.com/images/20181210/6eb95d8a1e8b4102970160cde2a3c530.jpeghttp://5b0988e595225.cdn.sohucs.com/images/20181210/bbd043f1ff814ea6a2d0b37d2f7c115f.jpeghttp://5b0988e595225.cdn.sohucs.com/images/20181210/a7887bff57da47aaad1fc5f1c01b9467.jpeghttp://5b0988e595225.cdn.sohucs.com/images/20181210/0b06b94099204343b09f015dc4d58c64.jpeghttp://5b0988e595225.cdn.sohucs.com/images/20181210/83b1e59bfc05459a8572c35f318eb687.jpeghttp://5b0988e595225.cdn.sohucs.com/images/20181210/93c5b2d0fe5144a5828161214d305288.jpeghttp://5b0988e595225.cdn.sohucs.com/images/20181210/8286ef222d02465e8aba6e8d8033c407.jpeghttp://5b0988e595225.cdn.sohucs.com/images/20181210/40491c5e1fcf46d2956a94ec0d89d7bb.jpeghttp://5b0988e595225.cdn.sohucs.com/images/20181210/00837b10bf724520b34a7d80b8a97055.jpeghttp://5b0988e595225.cdn.sohucs.com/images/20181210/9837b9d955e44a8997c4c5117e849458.jpeghttp://5b0988e595225.cdn.sohucs.com/images/20181210/a11be45a50334f508c660e29f3e49aae.jpeghttp://5b0988e595225.cdn.sohucs.com/images/20181210/abc814b361374acca1fe6562429f0f19.jpeghttp://5b0988e595225.cdn.sohucs.com/images/20181210/200d7d5955984b77b60598e4e69c958e.jpeghttp://5b0988e595225.cdn.sohucs.com/images/20181210/2d3d2c09bbc142c497503bce9f91e04c.jpeghttp://5b0988e595225.cdn.sohucs.com/images/20181210/d62d1c510add40549a021a10c6d7981a.jpeghttp://5b0988e595225.cdn.sohucs.com/images/20181210/01ec41e49eb04532b8108e86f8dd2c8a.jpeghttp://5b0988e595225.cdn.sohucs.com/images/20181210/431d7817328043fba667c12fcfe681b5.jpeghttp://5b0988e595225.cdn.sohucs.com/images/20181210/a4c1c5cc97d640b7adb6236faff50847.jpeghttp://5b0988e595225.cdn.sohucs.com/images/20181210/2dda82fecd8247f7a07d1e760112c169.jpeghttp://5b0988e595225.cdn.sohucs.com/images/20181210/7f370a17b9aa4550a98ba03b1cf7b11c.jpeghttp://5b0988e595225.cdn.sohucs.com/images/20181210/4460e3f42c0c44abafe55011e93726c1.jpeghttp://5b0988e595225.cdn.sohucs.com/images/20181210/1f5dd8ae3f144210a742e87ee4ea44b0.jpeghttp://5b0988e595225.cdn.sohucs.com/images/20181210/255ef07d403e480c98835d156561b13d.jpeghttp://5b0988e595225.cdn.sohucs.com/images/20181210/d682689f9e2344b7a2f65ec752105d4f.jpeghttp://5b0988e595225.cdn.sohucs.com/images/20181210/c7e12632abba4f679746accdb221a6b2.jpeghttp://5b0988e595225.cdn.sohucs.com/images/20181210/55ab7b5c28b3463ca0cdeb74f5a6db03.jpeghttp://5b0988e595225.cdn.sohucs.com/images/20181210/4d6f40395bd3470498dd60e1519f3d47.jpeghttp://5b0988e595225.cdn.sohucs.com/images/20181210/09bd7e964aa4460b9e4ca1f0e6e61748.jpeghttp://5b0988e595225.cdn.sohucs.com/images/20181210/66f3afacd3b94e94a9f9c6f99ab78a7f.jpeg大家都不容易！ 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