Find grounding line commonly used test to determine the grounding line pull each line approach. According to the following steps to deal with single-phase ground fault: (a) ascertain whether true single-phase ground; (2) to ascertain is what phase; (3) to find which line to ground; light load operation by line, heavy and the actual situation of long lines, short circuit or malfunction rate is determined to pull the order line, if the pull of a line, a ground signal disappears, indicating that the ground is on the line. Finally, it is worth mentioning is: Why is it that the line segment measuring insulation resistance must open line of three-phase drainage lines, then each section were measured three-phase wire insulation resistance? The reasons are: (1) some long lines ACSR ex transposition leads the way, in case there is no marked A, B, C phase, the failure to prevent the leakage test phase insulation resistance of aluminum package ACSR much money, causing a wrong judgment; (2) considers incomplete produce single-phase grounding of the lowest one phase to ground voltage must be grounded phase, so only a relative measure of insulation resistance ACSR selection, but in fact it is possible to measure the leakage fault with ACSR, error-prone; (3) multi-point line possible grounding. Therefore, when the grounding occurred overhead lines must be carefully testing, to determine accurately, the work can not be sloppy. ACSR ACSR sales price _ _ Anhui Electric Group is provided by Anhui Electric Group Co., Ltd .. Anhui Electric Group Co., Ltd. (www.ahecable.com) strong, credible, in Chuzhou bare wires and bare conductor products industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Anhui Electric Group and you hand into the brilliant, for a better future!