Starting and Charging Systems Caterpillar


Alternator Breaker Test Description

Usage:

768C 02X


图 1g01276092

技术参数

本测试测量交流发电机开路器两极的电压降。 测量测试点 1 和测试点 9 两端的电压降。

电压降将使交流发电机开路器指示灯点亮。 电压降必须大于 0.45 ± 0.15 伏。 灯点亮是了为说明有缺陷。 所有测试步骤中的故障均会指示。

该故障可能的原因如下:

  • 开路器启用

  • 开路器因过高电压降而关闭

其他回路的信息

在步骤"测试设置 A,连接"、"测试步骤 B,起动"和"测试步骤 C,起动辅助"中,测试点 (1) 为正极而测试点 (9) 为负极。 测试点 (1) 和测试点 (9) 如此分配是因为蓄电池将电流通过交流发电机开路器 (D) 向电路供电,以进行起动。

在"测试步骤 D,高怠速"中,电压将颠倒测试点 (1) 和测试点 (9) 的极性。 测试点 (1) 将为负极而测试点 (9) 将为正极。 极性颠倒是因为蓄电池通过交流发电机开路器 (D) 从交流发电机开路器 (H) 上接收到电流。

如果充电电路电压降过大,蓄电池将无法获得充足的电量。

交流发电机开路器指示灯闪烁几秒。 指示灯可能点亮几秒。 指示灯将关闭且交流发电机指示灯将点亮。 这在发动机起动时是可接受的。

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