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YSB901A三相電(dian)(dian)(dian)(dian)能(neng)表(biao)(biao)現場(chang)校驗儀（臺式）是(shi)一種體積小(xiao)、重量(liang)(liang)(liang)輕、簡便實用(yong)的(de)計(ji)(ji)量(liang)(liang)(liang)校驗工(gong)具，可(ke)現場(chang)校驗電(dian)(dian)(dian)(dian)能(neng)表(biao)(biao)的(de)誤(wu)差、檢查計(ji)(ji)量(liang)(liang)(liang)裝置的(de)接線(xian)是(shi)否(fou)(fou)正確、檢測計(ji)(ji)量(liang)(liang)(liang)用(yong)電(dian)(dian)(dian)(dian)流互(hu)感器的(de)變比和極性、測量(liang)(liang)(liang)用(yong)戶電(dian)(dian)(dian)(dian)能(neng)質量(liang)(liang)(liang)（包括電(dian)(dian)(dian)(dian)壓諧波、電(dian)(dian)(dian)(dian)流諧波、電(dian)(dian)(dian)(dian)壓平衡度(du)、總諧波失(shi)真度(du)等）；通過測試可(ke)判斷(duan)用(yong)戶是(shi)否(fou)(fou)有(you)偷竊(qie)電(dian)(dian)(dian)(dian)的(de)行為，計(ji)(ji)量(liang)(liang)(liang)精度(du)是(shi)否(fou)(fou)滿(man)足國家標(biao)準(zhun)的(de)要求，用(yong)戶是(shi)否(fou)(fou)對電(dian)(dian)(dian)(dian)網的(de)質量(liang)(liang)(liang)造成諧波污染(ran)，功率因數(shu)是(shi)否(fou)(fou)達標(biao)，避免電(dian)(dian)(dian)(dian)力系統的(de)損失(shi)。