GDHX-9300無線(xian)高壓(ya)核相(xiang)(xiang)器（以(yi)下(xia)簡稱“儀器"）用于檢(jian)測環(huan)網或雙(shuang)電(dian)(dian)源電(dian)(dian)力網閉(bi)(bi)環(huan)點斷路器兩側(ce)電(dian)(dian)源是否同相(xiang)(xiang)。在閉(bi)(bi)環(huan)兩電(dian)(dian)源之前一定(ding)要進(jin)行核相(xiang)(xiang)操(cao)作，否則(ze)可能(neng)發生短路。儀器適合5V～220KV輸電(dian)(dian)線(xian)路帶電(dian)(dian)核相(xiang)(xiang)作業(ye)，同時具有高壓(ya)驗(yan)電(dian)(dian)和核定(ding)相(xiang)(xiang)序的功能(neng)。