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1747-L511
1747-L511

1747-L511

作者:moge789   2022-05-20 02:40:01  点击:125

详情

1747-L511  AB

◆ 企业名称:厦门莫格电气自动化有限公司

◆ 联系人: 雷琳

◆ 手机:18050035902

◆ Q Q :1982497648

◆ 电话:0592-6808394

◆ 传真:0592-6514751

诚信经营,质量为首,服务至上,莫格电气 小雷 竭诚为您服务!!!


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1.8.3 压敏电阻问题
压敏电阻本来是用于进线侧吸收进线过电压的保护器件,但当进线侧电压持续较高,压敏电阻性能有变化时,有可能使压敏电阻爆炸烧毁,同样有可能殃及周围器件和导线绝缘。
1.8.4 电解电容器漏液、爆炸、燃烧
电解电容质量不好的表现有:漏液、漏电流大、损耗大、发热、鼓包、炸裂、由炸裂引起燃烧、容量下降,内阻及电感增加。对于滤波用电解电容器因电压高、容量大,所储存的能量大,容易造成漏液、爆炸、燃烧。电解液是可燃物,可造成燃烧事故。因此要用质量好的电解电容器,并在到达寿命前更换新的。
1.9 常见运行中的故障
1.9.1 过电流跳闸
起动时,一升速就跳闸,说明过电流十分严重,应查看有否负载短路、接地、工作机械卡堵、传动损坏、电动机起动转矩过小、以及根本起不动、变频器逆变桥已损坏。
运行中跳闸引起的原因有升速设定时间过短、降速时间设定过短、转矩补偿(V/f 比)设定太大,造成低速过电流、热继电器调整不当,动作电流设定太小也可引起过电流动作。
1.9.2 过电压和欠电压跳闸
(1)过电压:电源电压过高、降速时间设定过短、降速过程中制动单元没有工作或制动单元放电太慢,即制动电阻太大。变频器内部过电压保护电路有故障会引起过电压。
(2)欠电压:电源电压过低、电源缺相、整流桥有一相故障,变频器内部欠电压保护电路故障也会引起欠电压。
1.9.3 电动机不转
电动机、导线、变频器有损坏,线未接好,功能设置,如上限频率、下限频率、最高频率设定时没有注意,相互矛盾着。使用外控给定时,没有选项预置,以及-不合理设置。

Bently Nevada 134652-01 Sampler TDXnet PLC Transient Data Inte-ce 137305-01

Bently Nevada 103928-02 Sampler Card TDXnet PLC Transient Data Inte-ce 5160

Bently Nevada 105401-02 Sampler Card TDXnet PLC Transient Data Inte-ce 3407

Bently Nevada 3300/75 32 Channel Temperature Monitor PLC 3300/75-02-00-0?0 330075

Bently Nevada 3300/30 Six Channel Temperature Monitor 3300/30-02-01-0?1-00-00 PLC

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Bently Nevada 3300/55 Dual Velocity 3300/55-01-04-0?1-01-00-00-06-0?0 PLC Module

Bently Nevada 3300/61 Dual Vector Monitor 3300/61-04-01-0?3-00-00-00 PLC 15 mils

Bently Nevada 3300/61 Dual Vector Monitor 3300/61-02-01-0?1-00-00-00 PLC 5 mils

Bently Nevada 3300/48 Case Expansion Monitor 3300/48-05-03-0?1-00 PLC 82803-05

Bently Nevada 3300/61 Dual Vector Monitor 3300/61-02-01-0?0-00-00-00 PLC 5 mils

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