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山东变频器內部大物件要按时拆换

浏览量:   来源:www.sdbczdh.com  作者:宝川变频器

山东变频器故障:在现如今电气控制系统行业,软启动器絕對是屈指可数的最红大牌明星。无可奈何作为电气设备、电子器件等技术性结合一体化的软启动器,决不是金刚不坏之身!为了保证软启动器安全性、平稳工作运行,对其内部各种附件除了定期检查清洁外,还需定期更换。为此本人参阅各种资料,并结合多年工作经验现将变频器内部五大部件更换时间,分享给广大电工同行。


Shandong Inverter Fault: In today's electrical control system industry, soft starter is absolutely the most famous star. Helplessly as a technical integration of electrical equipment, electronic devices and other soft starters, it is by no means a good body! In order to ensure the safety and smooth operation of the soft starter, all kinds of accessories in the soft starter need to be replaced regularly besides regular inspection and cleaning. For this reason, I refer to a variety of information, combined with many years of work experience, will now change the time of five parts of the converter, to share with the vast number of electrical colleagues.




一、散热器风扇作为保证软启动器一切正常运作的前提条件,高效率迅速的直排散热器风扇,变成软启动器不可或缺的变配。因为应用全过程中散热器风扇內部滚动轴承损坏、润滑油脂特性减少等各种因素的危害,风扇的冷却能力往往会大打折扣,为此冷却风扇一般2-3年便应更换。


1. Radiator fan, as the precondition to ensure the normal operation of soft starter, is an indispensable variable of soft starter. Because of the damage of rolling bearings inside radiator fans and the reduction of lubricating grease characteristics during the whole process of application, the cooling capacity of fans is often greatly reduced. Therefore, cooling fans should be replaced in 2-3 years.




二、接触器/继电器做为变频器内部直流回路充电控制的器件(多见于国内变频器品牌,国外机型多以晶闸管缓充电路代替),接触器(大功率变频器使用)或继电器(小功率变频器)的触点在经过一段时间的使用后,经常发生触点烧蚀、虚接等故障现象。因此为了达到提前预防的目的,往往2年左右就需更换接触器或继电器。


2. Contactors/relays are used as devices for charging control of DC circuit in frequency converters (mostly in domestic brands of frequency converters, and slow charging circuit of thyristors is used in foreign models). Contacts of contactors (high-power converters) or relays (low-power converters) often suffer from contact ablation and virtual connection after a period of use. Therefore, in order to achieve the purpose of early prevention, it is often necessary to replace contactors or relays in about two years.




三、电解电容肩负软启动器直流电母线槽过滤功效的各种各样容积的电解电容(绝大多数为铝电解电容),随应用時间提高,因为锂电池电解液外流、高工作电压冲击性,及其应用自然环境温度湿度等要素的危害,电解电容需要在3-4年后进行更换。


3. Electrolytic capacitors shoulder various volumes of electrolytic capacitors (most of which are aluminium electrolytic capacitors) with the filtering effect of DC busbar trough of soft starter. With the increase of application time, because of the harmfulness of electrolyte outflow of lithium batteries, impact of high working voltage and natural environment temperature and humidity, electrolytic capacitors need to be replaced after 3-4 years.




四、熔断器随着使用时间拉长在大电流冲击和温度因素影响下,熔体材质性能多会出现退化现象,致使变频器因此发生不应该出现的故障.为此熔断器每7年就应更换一次。


4. Under the influence of high current impact and temperature factors, the fuse will degrade its material properties with the prolongation of service time, which will lead to undesirable faults of the frequency converter. Therefore, the fuse should be replaced every seven years.




五、PCB线路板该器件往往是绝大部分同行容易忽视的,其实变频器内部所用PCB线路板尤其是开关电源、电压检测等电路部分由于始终需要承受高电压,因此该部分电路PCB板的电气绝缘性能就会随使用时间呈现反比,这对于使用多层PCB线路板和一部分做工质量欠佳的变频器而言,是十分不利的。为此针对这部分电路,应以7年作为一个更换周期。


Fifth, PCB circuit board is often neglected by most of the peers. In fact, the PCB circuit board used in the converter, especially the switching power supply and voltage detection circuit, always needs to withstand high voltage, so the electrical insulation performance of PCB board in this part of the circuit will be inversely proportional with the use time, which is not good for the use of multi-layer PCB circuit board and part of the work quality. Inverter is very disadvantageous. For this reason, seven years should be taken as a replacement period for this part of the circuit.




文章来源:http://www.sdbczdh.com


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