... Product Brief IntroductionThe three-phase multi-rate watt-hour meter track can be accurately measured active positive ... 15284-2002 special requirements for multi-rate watt-hour meter, JJG596-1999 Electronic Energy Meter Verification Regulation, DL / T 614 ... -1997 Multi-function watt-hour meter, DL / T 645-1997 Multi-function watt-hour meter communication protocol, "Zhejiang Province, ...