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穿芯漏电互感器
穿芯漏电互感器
Through core leakage transformer
这种方法是主流设计方案，广泛引用建筑电气防火，市场大部分采用500mA和1000mA规格，这种设计一般很少设计过载倍数，通过AD数字采集范围窄，测量精度比较高，10mA电流准确可靠计算出来，符合人身安全标准，适合民用建筑。
This method is the mainstream design scheme, which widely quotes building electrical fire protection. Most of the market adopts the specifications of 500mA and 1000mA. This design generally has few design overload multiples. The range of ad digital acquisition is narrow, the measurement accuracy is relatively high, and the current of 10mA is accurately and reliably calculated, which conforms to the personal safety standard and is suitable for civil buildings.
优点很明显，但是缺点也很明显，因为检测漏电范围比较窄，漏电流最大1A多。在工业电气应用会明显不适应，工业设备均是大负荷，一般漏电流都是几十安、几百安，甚至上千安也会出现，小范围漏电互感器出现铁芯饱和情况，穿芯互感器是检测不出来或者互感器坏。工业使用环境有完备保护功能(过流保护等)，对供电可靠性和连续性要求较高，用电设备环境复杂，对于mA的漏电流可以不必理会，采用穿芯互感器测量方案，感觉容易误跳。
The advantages are obvious, but the disadvantages are also obvious, because the detection leakage range is narrow, and the maximum leakage current is more than 1a. It is obviously not suitable for industrial electrical application. Industrial equipment is of large load. Generally, the leakage current is tens of a, hundreds of a, even thousands of A. the core of small-scale leakage transformer is saturated, and the through core transformer cannot be detected or the transformer is damaged. The industrial use environment has complete protection functions (over-current protection, etc.), which requires high reliability and continuity of power supply. The environment of electrical equipment is complex, and the leakage current of Ma can be ignored. The measurement scheme of through core transformer is adopted, which makes it easy to trip by mistake.
工业负荷比较大，线缆也比较粗，穿芯互感器要穿过A B C N四根线，制造出大孔径漏电互感器，成本比较高，工程施工难穿心，所以工业环境中很少装设具备电气防火设备。
The industrial load is relatively large, and the cable is also relatively thick. The core transformer needs to pass through four wires a B C n to make a large aperture leakage transformer. The cost is relatively high, and the project construction is difficult to pass through the core. Therefore, the industrial environment is rarely equipped with electrical fire protection equipment.
Through core leakage transformer
这种方法是主流设计方案，广泛引用建筑电气防火，市场大部分采用500mA和1000mA规格，这种设计一般很少设计过载倍数，通过AD数字采集范围窄，测量精度比较高，10mA电流准确可靠计算出来，符合人身安全标准，适合民用建筑。
This method is the mainstream design scheme, which widely quotes building electrical fire protection. Most of the market adopts the specifications of 500mA and 1000mA. This design generally has few design overload multiples. The range of ad digital acquisition is narrow, the measurement accuracy is relatively high, and the current of 10mA is accurately and reliably calculated, which conforms to the personal safety standard and is suitable for civil buildings.
优点很明显，但是缺点也很明显，因为检测漏电范围比较窄，漏电流最大1A多。在工业电气应用会明显不适应，工业设备均是大负荷，一般漏电流都是几十安、几百安，甚至上千安也会出现，小范围漏电互感器出现铁芯饱和情况，穿芯互感器是检测不出来或者互感器坏。工业使用环境有完备保护功能(过流保护等)，对供电可靠性和连续性要求较高，用电设备环境复杂，对于mA的漏电流可以不必理会，采用穿芯互感器测量方案，感觉容易误跳。
The advantages are obvious, but the disadvantages are also obvious, because the detection leakage range is narrow, and the maximum leakage current is more than 1a. It is obviously not suitable for industrial electrical application. Industrial equipment is of large load. Generally, the leakage current is tens of a, hundreds of a, even thousands of A. the core of small-scale leakage transformer is saturated, and the through core transformer cannot be detected or the transformer is damaged. The industrial use environment has complete protection functions (over-current protection, etc.), which requires high reliability and continuity of power supply. The environment of electrical equipment is complex, and the leakage current of Ma can be ignored. The measurement scheme of through core transformer is adopted, which makes it easy to trip by mistake.
工业负荷比较大，线缆也比较粗，穿芯互感器要穿过A B C N四根线，制造出大孔径漏电互感器，成本比较高，工程施工难穿心，所以工业环境中很少装设具备电气防火设备。
The industrial load is relatively large, and the cable is also relatively thick. The core transformer needs to pass through four wires a B C n to make a large aperture leakage transformer. The cost is relatively high, and the project construction is difficult to pass through the core. Therefore, the industrial environment is rarely equipped with electrical fire protection equipment.
