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专业维修福禄克 5520A 多功能校准器，其常见的故障及原因分析如下
故障点：开机自动重启
原因分析：仪器A9板损坏，导致系统无法稳定运行，造成重启现象。
故障点：交流电压输出保护，自检报错
原因分析：仪器内部元件损坏，如A8板、A6板或控制板组件故障，导致交流电压无法正常输出，自检时检测到错误并报错。
故障点：校准源信号自动断开
原因分析：被校准表内阻过高，导致电流端反馈回来的电压过高，超过校准器的驱动能力。可通过在电流端并联一个相应标准电阻来解决，但此时功率值需要计算。
Hao Chen team professional maintenance, quality assurance!!
Professional maintenance Fluke 5520A multi-function calibrator, its common faults and causes are analyzed as follows
Fault point: automatic restart after startup
Cause analysis: The A9 board of the instrument is damaged, resulting in the system cannot run stably, resulting in restart phenomenon.
Fault point: AC voltage output protection, self-check error
Cause analysis: The internal components of the instrument are damaged, such as A8 board, A6 board or control board component failure, resulting in the AC voltage cannot be output normally, and an error is detected and reported during self-test.
Fault point: The calibration source signal is automatically disconnected
Cause analysis: The internal resistance of the calibrated table is too high, resulting in the voltage feedback from the current end is too high, exceeding the driving capability of the calibrator. It can be solved by paralleling a corresponding standard resistor at the current end, but the power value needs to be calculated at this time.
By understanding the common faults of the equipment, you can better maintain and use it to ensure its long-term stable operation. If you can not solve, welcome to contact Hao Chen! Our maintenance team has a wealth of practical experience and professional maintenance process, can provide you with fast, reliable, quality maintenance service!
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