王褚街道厚利直流无刷控制器9D200H竭力虔心

30、想用变频器传动带有改善功率因数用电容器的电机，电机却不动，清说明原因
变频器的电流流入改善功率因数用的电容器，由于其充电电流造成变频器过电流(OCT),所以不能起动，作为对策，请将电容器拆除后运转，甚至改善功率因数，在变频器的输入侧接入AC电抗器是有效的。
31、变频器的寿命有多久？
变频器虽为静止装置，但也有像滤波电容器、冷却风扇那样的消耗器件，如果对它们进行定期的维护，可望有10年以上的寿命。
32、变频器内藏有冷却风扇，风的方向如何？风扇若是坏了会怎样？
对于小容量也有无冷却风扇的机种。有风扇的机种，风的方向是从下向上，所以装设变频器的地方，上、下部不要放置妨碍吸、排气的机械器材。还有，变频器上方不要放置怕热的零件等。风扇发生故障时，由电扇停止检测或冷却风扇上的过热检测进行保护

王褚街道厚利直流无刷控制器9D200H竭力虔心


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王褚街道厚利直流无刷控制器9D200H竭力虔心

王褚街道厚利直流无刷控制器9D200H竭力虔心
做好计算成本工作，首先要建立健全原始记录;建立并严格执行材料的计量、检验、领发料、盘点、退库等制度;建立健全原材料、燃料、动力、工时等消耗定额;严格遵守各项制度规定，并根据具体情况确定成本核算的组织方式。从生产费用发生开始，到算出完工产品总成本和单位成本为止的整个成本计算的步骤。成本核算程序一般分为以下几个步骤：生产费用支出的审核。对发生的各项生产费用支出，应根据国家、上级主管部门和本企业的有关制度、规定进行严格审核，以便对不符合制度和规定的费用，以及各种浪费，损失等加以制止或追究经济责任。

王褚街道厚利直流无刷控制器9D200H竭力虔心
非金属材料阀门：其阀体等零件由非金属材料制成。如塑料阀、陶阀、搪阀、玻璃钢阀等。金属阀体衬里阀门：阀体外形为金属，内部凡与介质接触的主要表面均为衬里，如衬胶阀、衬塑料阀、衬陶阀等。阀门型号编排阀门型号通常应表示出阀门类型、驱动方式、连接形式、结构特点、密封面材料、阀体材料和公称压力等要素。阀门型号的标准化对阀门的设计、选用、销售提供了方便。当今阀门的类型和材料越来越多，阀门的型号编制也愈来愈复杂。

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