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5X00121G01
点击次数:4发布时间:2017/2/16 15:14:35
更新日期:2017/2/16 15:14:35
所 在 地:中国大陆
产品型号:5X00121G01
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5X00121G01
5X00121G01
7、 变频器的接地应该与PLC控制回路单独接地,在不能够保证单独接地的情况下,为了减少变频器对控制器的干扰,控制回路接地可以浮空,但变频器一定要保证可靠接地。在控制系统中建议将模拟量信号线的屏蔽线两端都浮空,同时由于在机组上PLC与变频器共用一个大地,因此建议在可能的情况下,将PLC单独接地或者将PLC与机组地绝缘开来。
8、变频器的接地
400V级:C种接地(接地电阻10Ω以下)。
接地线切勿与焊机及动力设备共用。
接地线请按照电气设备技术基准所规定的导线线径规格。
如35KW的变频器接地线线径推荐为22 mm2,87KW的接地线线径推荐为50 mm2。
接地线在可能范围内尽量短。由于变频器产生漏电流,与接地点距离太远则接地 端子的电位不安定。
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FOXBORO QQ:2917675397
ABB 邮箱:2917675397@qq.c o m
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