静稳阻抗和低电势阻抗采用正序阻抗，能有效地防止外部短路造成的误动作。
It USES the positive impedance in static stability and low-voltage impedance which can effectively prevent the mal-operation in external faults.
点204和206表示在低波段处谐振的第一导体102中的短路（低阻抗）点。
Points 204 and 206 denote the short circuit (low impedance) points in the first conductor 102 which resonates at the low band.
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