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  • 线束测试的原理
  • 本站编辑:聚航电子发布日期:2019-09-20 12:37 浏览次数:
原理
低压导通测试:给需要测试的线缆施加一定电流,测量线缆端点处的电压值和电流值,由测试仪内部对测量结果使用欧姆定律进行换算,得出准确的电阻值。用此电阻值与用户设定的电阻值进行比较,判定是否符合用户的指标要求,并将判定结果以“通过”或“不通过”的明确信息形式显示在计算机上告之用户。
绝缘测试:在通过低压导通测试后,进行绝缘测试。绝缘测试时,测试仪对需要测试的线缆施加一定的高电压,其余的线缆将其接到地线上,测量线缆间的电流,如果电流超过用户设定的电流值,则认为线缆不合格。满足用户设定的电流值的情况下,测量出此时的绝缘电阻值。并将判定结果以“通过”或“不通过”的明确信息形式显示在计算机上告之用户。
耐压测试:对需要测试的线缆施加一定时间的高电压,测量线缆上的电流,如果实际电流超过用户设定的电流值,则认为线缆不合格。并将判定结果以“通过”或“不通过”的明确信息形式显示在计算机上告之用户。

principle
Low voltage conduction test: Apply a certain current to the cable that needs to be tested, measure the voltage value and current value at the end of the cable, and use Ohm's law to convert the measurement results internally to obtain an accurate resistance value. This resistance value is compared with the resistance value set by the user to determine whether it meets the user's indicator requirements, and the judgment result is displayed on the computer as a clear message of "through" or "not through".
Insulation test: After passing the low voltage conduction test, the insulation test is performed. During the insulation test, the tester applies a certain amount of Gaodianya to the cable that needs to be tested. The rest of the cable connects it to the ground line and measures the current between the cables. If the current exceeds the current value set by the user, the cable is considered. Not qualified. When the current value set by the user is satisfied, the insulation resistance value at this time is measured. The decision result is displayed on the computer as a clear message "through" or "not through".
Pressure test: Gaodianya, who imposes a certain period of time on the cable to be tested, measures the current on the cable. If the actual current exceeds the current value set by the user, the cable is considered to be unqualified. The decision result is displayed on the computer as a clear message "through" or "not through".
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