P0922YU

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描述

P0922YU

电力变压器在正常运行中其产生的电磁交流声的频率相对较为稳定,所以电力变压器在高压试验中如果操作人员发现其内部声音异常,则可能是电力变压器过载运行、内部零件松动、贴心最外层硅钢片未夹紧、顶盖螺丝松动、内部电压过高、内部接触不良以及电力变压器短路等故障,或电力变压器绕组中存在较大的电流等,上述多种情况都能导致电力变压器高压试验中出现内部声音异常情况。上述故障发生后操作人员可以通过电力变压器内部声音来判断其是否出现故障,在判定故障发生后操作人员要对电力变压器上述部位进行断电检查,并根据故障原因来采取合理的措施进行解决。电力变压器在高压试验中如果出现自动跳闸的现象,则需要操作人员通过外部检查来确定故障原因,如果是由于操作人员在高压试验中的操作原因导致其跳闸,则不需要对电力变压器进行外部检查,但是如果不是认为原因导致电力变压器跳闸,则要求操作人员必须彻底、全面的对电力变压器进行内部检查,避免电力变压器在后期使用中发生火灾。如果电力变压器周围出现火灾则其会自动保护动作,通过自动切断断路器来避免电气设备受到损毁,如果电力变压器在火灾时没有自动断开,则要通过手动操作来将断路器断开才能进行火情扑救,这也是火灾情况下针对电力变压器操作的主要前提条件。电力变压器正常运行情况下的油位会控制在一定范围内,并且根据当地具体情况来对油位进行适当调整,所以在电力变压器高压试验中如果发现油位明显变化,要求操作人员首先要确定电力变压器是否存在漏油现象,当油位明显上升时则首先要考虑是否环境温度对其产生的影响。如果针对上述情况时可以排除掉环境温度因素,则操作人员要对油标管、呼吸管等部位进行检查,确定其在运行中是否存在堵塞现象,并要根据实际检查结构来对其进行处理,这样才能确保电力变压器在后期使用中的安全性、稳定性。

产品承诺:
保 证 全新原装进口,
保 证 安全准时发货,
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优势价格,大量现货。

主营DCS系统配件
机器人系统配件
大型伺服系统配件
品牌:ABB   ,AB  ,GE,FOXBORO,本特利,英维思,伍德沃德,西屋,瑞恩,施耐德,西门子,摩托罗拉,安川。力士乐。ACSO,横河等进口品牌。 专业销售进口DCS  PLC系统备件模块
Triconex Siemens Yaskawa ABB GE Ovation AB Foxboro Motorola Schneider XYCOM KUKA
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选择深圳长欣,选择放心,售后无忧大量现货,当天顺丰发货!
主营:本特利,英维思,伍德沃德,福克斯波罗、西屋、瑞恩、施耐德莫迪康、ABB、AB、西门子、摩托罗拉、GE发那科、安川、博世力士乐,ACSO,力士乐等各大品牌的DCS系统配件,机器人系统配件,大型伺服系统备件。

先介绍几点经验。
1、先通读一遍“系统手册”(不管能不能看懂,先了解个大概,以便学习编程时查找);
2、由位控逻辑入手,逐渐增加定时、计数等条件,把或、与、非关系理顺;
3、进而练习整数运算、实数运算、类型转换;
4、量程转换、PID调节回路的建立及P、I、D参数的理解(最好是有个物理回路验证,比如变频器+电机+测速传感器);
5、循环、顺序、跳转等程序控制(尽量避免跳转,非跳不可时也是跳的越近越好);
6、中断、通讯、位置控制....

本人以ABB工业机器人配件DSQC系列和Motorola MVME系列,GE 卡件 模块 驱动器系列为主攻。各位电工朋友可根据自己的条件选择适合自己的PLC品牌,由于PLC的基本框架大同小异,学会一种至于其它的学习起来也就简单了。