Overview EMM621 phase voltage RS485 is a programmable measurement, display, digital communication and power transmission pulse output function of the multi-function power meters, able to complete the power measurement, energy measurement, data display, acquisition and transmission. EMM621 phase voltage RS485 can be widely used in intelligent building (Xi'an oil and gas research laboratory building, Huainan City Hospital, Shenhua Group distribution projects, the Shenzhen Metro distribution projects, Hubei Tom Stone Spa two, Chengdu Eastern Music Park, Heze Taihe home buyers, together, Sunshine Town) energy measurement, management and evaluation. Technical parameters Voltage Input: AC25-600V the overvoltage input plus PT current input: AC0-5A, the overcurrent input plus CT output mode: 2-way power pulse output + 2-way RS485, MODBUS-RTU protocol output working environment: -10 ~ 55 ℃, humidity ≤ 93% the RH the safety of non-erosive pressure: input / power supply> 2kV, input / output> 2kV, power supply / output> 1kV energy measurement: active and reactive power measurement range 0 to 99999999Mwh, more than this value of electrical degrees from 0 count measurement accuracy: 0.5 power: AC/DC85 ~ 270V Display: LED digital display Installation: panel mounting Note EMM621 phase voltage RS485 communication open to customers' data, there is a grid float type of data and the second grid int / long data. Please read the mailing address table storing address data format, and to ensure that in accordance with the corresponding data format conversion. EMM621 phase voltage RS485 support bi-directional energy metering, in the case of a wiring error, the total active negative case, the power will be added to the negative active energy, positive active energy accumulation.