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EM718 smartmeter remote turn off electric meter
Benefits and Main Features
Single phase metering 7 DIN modules, Standard DIN rail Format (DIN43880)
Bi-directional active energy measuring,4-quadrant reactive measuring for latest 12 months
Records MD and its occurent time for latest 12 months
Instant Volt, Amp, Power factor, Frequency, Active power, Reactive power, Apparent power
TOU of 4 tariffs, up to 12 time periods per day
Summer time switch
load profile(option)
Load control Relay inside
Remote disconnect/reconnect
Direct metering up to 100A,CT version is available
Clock time verification function
Isolate pulse output (DIN43864)
LCD display, 6 integer 2 decimal, meter display when power fails
Large clear backlight display
RS485 communication port, modbus protocol
IR port Program by button on the nameplate Memory back-up (EEprom)
Measuring Function
On the EM738’S front panel, there are three LED, active/reactive energy pulse light, and alarm indicator lights .
Meter can measure import active energy , export active energy , four-quadrant reactive energy. The measurement type can be set.
With time-division measurement function, user can store or calculate active and reactive energy according to the time interval of4 tariffs ( Sharp, peak, Even, valley).
Measure separate phase active energy.
Demand function
The meter can calculate the forward and reverse active/reactive demand and the demand occurrence time.
Max demand value can be zero clearing by meter reader.
Max demand can be set by sliding windows time, demand interval. Factory default:
demand interval is 15mins, sliding windows time is 5min. It can store Max demand data of latest 12 months..
Data store function
The meter can store total active energy, forward/reverse active total energy and time-sharing energy. Also include the reactive forward/reverse total energy and time-sharing energy, four-quadrant reactive total energy and time-sharing energy.
Data restore time is at 0’clock the end of a month or any day of a month from 1~28 on hour.
The meter can store current and previous 12months data.
When energy meter has no power, all settlement –related data should be save less than 10 years, other data preserve less than 3 years.
TOU function
The internal clock circuit of energy meter has time automatic switching function. Calendar, clock and rate can be set and adjustment through RS485, infrared interface. At least 4 tariffs and 12 time interval can be set within a natural day, min time interval is 15 minutes. Time interval can be set over Zero o’clock.
Electricity parameters measurement and monitoring
The meter can measure: voltage, current, active power, reactive power, apparent power,
power factor and frequency of each phase. Also can display the direction of the current and
power. The resolution of frequency is 0.01Hz. the accuracy of Voltage,current,activepower,reactive power and apparent power is 1%.
Switching off display
When the power is off, user can read the meter by pressing button on the panel.
Load record
The meter can set up the “load curve” and “the start time of load curve” by serial interface. Users can choose 6 types data to record by timing in order to make the load curve.
Remote turn off electric meter
The meter has an internal relay output interface to control the Load. The meter will be disconnect/reconnect by receive the Command from the system remotely.
Summer/winter time switch permit/prohibition
Smart meter provide automatic summer/winter time switch accomplished at 02.00 on the
last Sunday of March(forward 1 hours) and at 03:00 on the last Sunday of October(back 1 Hours).
Summer/winter time switch can permit or prohibition by RS485 or IR port.
Communication Function
With an infrared COM and a RS485 COM. Its physical layers are independent with each other. One communication channel will not be affected by the other one.The meter can realize data acquisition, broadcast time setting, read, program and manage through hand-held terminals, data acquisition terminal, test equipments and computers.
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