HZ-8600 Phasing Unit, for MV overhead distribution circuits, is used to detect whether the phase sequence on both sides of the high-voltage power grid closing point is the same. The phase sequence of the two power line connections must be checked beforehand; otherwise, the lines may short circuit. The instrument is suitable for 0.22 to 220 kV power transmission lines and can test whether the line is charged. The instrument adopts wireless transmission technology, ensuring safe and reliable operation and ease of use.