3512B HD SR500 Generator Sets Caterpillar


Generator - Inspect

Usage:

3512B 9G5

------ WARNING! ------

警告:高电压能造成人身伤害或死亡。

发电设备必须在运转中出现高电压和高电流时进行测试和/或调节。

不适当的测试设备可能失效,并会出现危及用户的高压电击。

应确保测试设备能在高电压和高电流下正确运转并进行测试。

在维护或修理发电设备时:

  • 确保装置在脱机状态(脱开公用电网或其它发电设备),并锁定或者系上”不准操作“(DO NOT OPERATE)标签。

  • 拆下所有保险丝。

  • 确保驱动发电机的发动机停机。

  • 确保断开所有蓄电池。

  • 确保所有电容器已放电。

不遵守这些警告,可能会导致人身伤亡。 确保在转子、定子和发电机中的剩余电压已放电。


------ WARNING! ------

发动机-发电机运行时,在调压器或附近的以下区域电压可高达 600V:

a. 调压器端子板

b. 励磁变压器端子板(仅限于自励发电机)



注意

如果零件接地,调压器的电子元件在发电机运行期间可能损坏。


应定期检查发电机清洁度。 不要让以下污染物积聚在绕组上:

  • 污垢

  • 灰尘

  • 润滑脂

  • 油膜

如果允许湿气持续与电气绕阻接触,湿气可能会最终停留在绝缘层的空隙或裂纹内。 湿气会降低绕组绝缘层的电阻。 Cat 发电机绕组上使用的是防潮绝缘层。 但是,此绝缘层并不防水。 不断暴露在潮湿环境下会逐渐降低绝缘电阻。

污垢会使问题加重。 污垢可保持湿气与绝缘层接触。 海洋空气中的盐可使问题复杂化。 盐和水的组合会形成电导体。

清洁电压调节器并清洁发电机上的污垢和碎屑。 使用刷子松动堆积的污垢。 用真空清洁系统,以除去残留的污垢。 不建议使用压缩空气。 压缩空气中含有以冷凝水形式存在的湿气。

绝缘层上的碳踪迹可能是由污垢或连接松动引起。 必须清除这些碳质槽或者必须更换绝缘层。 未能排除碳踪迹问题将会造成电路内电气短路。

目视检查导线是否松动或断裂。 还要目视检查接头是否松动或断裂。 检查电压调节器组件上的导线和接头。 检查发电机的所有导线和接头。 清洁散热装置。 对导线进行必要的修理。 有关测试和调整或拆解和装配步骤,请参阅维修手册, SCNR8395。

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