通过计算短路点的短路电流，说明原电流互感器额定热稳定电流太小。
The short circuit current calculation shows the rated thermal stability current of former current mutual inductor is too small.
其屏蔽盒应用主气隙，防止原电流产生的磁场集中在屏蔽壳的金属板内。
Its shielded box should be used the main air gap and prevent the primary current to produce the magnetic field concentrating in the shield shell metal plate.
再经过变换得到原电流的基波分量，从原电流中减去基波分量得到要检测的谐波分量。
The fundamental current can be reconstructed by transformation while the harmonic current can be gained by subtracting fundamental components from the original current.
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