... of combined transformer and measuring meter is called electric measuring tank. The product isused in three-phase system network with outdoor rated ... ,400,500,600,750,800,1000A,secondary current is 5A. The tank is accurate, light,insulating,reliable,theft-proof and lekage-proof ... /5ASingle ratio of double ratio Primary wiring of doUble measuring tank:p1,p2 are heavy current tratioWhile P1,P3 are light ...