Energy measurement. Instantaneous parameter measurement

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1 E Three Phase Multi-function Meter The E is a 3P4W multifunctional energy meters. It adopts the advanced technology of LSI (Large Scale Integrated circuit) and digital signal processing. The craftworks of our product are exquisite and the functions provided are comprehensive and client-oriented. The function of E meter includes delivered and received active energy metering, LCD display, infrared communication ports, pushed billing with ECC signatures, important parameters modification event log and power outage event log etc. The E meter can work with an additional EWM KM, which can gather the instantaneous data from the E BM and processes and manages such information. The performance of our product is highly stable, the metering of energy is precise and the operations provided are very convenient and client-oriented. Ite m Standard DIN EN Description Wechselstrom-Elektrizitätszähle r; Besondere Anforderungen, Teil 2: Elektronische Wirkverbrauchszähler der Genauigkeitsklassen und 2 2 DIN EN DIN EN DIN EN Wechselstrom-Elektrizitätszähle r - Allgemeine Anforderungen, Prüfungen und Prüfbedingungen, Teil : Messeinrichtungen Elektrizitätszähler, Zählerstandsübertragung, Teil 2: Datenübertragung für festen und mobilen Anschluß Messung der elektrischen Energie Zählerstandsübertragung, Teil 6: OBIS Objekt Identification System Energy measurement Active import and export energy measurement Up to 5 month s history energy data At the time of 00:00 on the first day in one month, the current energy will be frozen and be saved to the history registers. All this history data can be read out via MMS. Instantaneous parameter measurement The instantaneous parameter can be displayed on LCD and be read out via communication. Instantaneous parameter measurements support: Positive and negative active power for total and each phase Voltage and current for each phase - -

2 Power factor for each phase Frequency Phase angle between the U~U2, U~U3, U~I, U2~I2, U3~I3 Communication There are two optical communication ports in E BM. The user interface is on the meter cover, and the D0 interface is at the low side of the meter. The configuration of these two ports is 9600bps, 8N. The D0 interface is used to communicate with the E KM. The cycle for the pushing period is two seconds. If the E KM sends one connection message to the E BM, the E BM will start pushing data at once. Otherwise, the E BM will send data to the E KM every 40 seconds in order to detect whether there s E KM present. The user can get or set any supported information from the meter via user optical interface. Digit signature The meter use digit signature for communication data, this crypto algorithm is ECC with 92 bits. The hash value is calculated with SHA-256, FIPS The high 24 Bytes of the hash value are used for signature calculation. So the data is very safety and steady when it communication and transmission. Display The meter use dot matrix LCD, and it s with backlight. The meter with the display mode of standard, standard backlight, request, service, dial test, and under each display mode, it have it s own display item and display interval. When the data item displayed, it with OBIS code, unit, and other information. Real time clock The super capacitor can supply 7 days in minimum after at least 24 hours of operation of the meter. The accuracy of the real time is better than 0.5s/day at 20 C environment temperature. When the super capacitor elapsed the clock is set to the time at power failure. The calendar support from the year 2000 to the year 2099, the DST function can be enabled or disabled. For the communication interface, E BM also supports the timestamp in the Unix time format. Pulse output The meter can be provided with active pulse output, it s can be used for calibration. Event log The meter can detect current status and record event, with the function of following event detect and record. Last 20 times meter Parameter modify Last 0 times meter Power Outage Last 0 times meter Phase disconnection Last 0 times meter Phase over voltage Last 0 times meter Phase under voltage Last 0 times meter Phase overload - 2 -

3 Last 0 times meter Phase reversed active energy Last 0 times meter Cover Open Last 0 times meter RTC error Technical data Type Voltages: Nominal voltage U n Voltage range Frequency: Nominal frequency f n Frequency range Currents: Reference current I ref = I b = 0 I tr Maximum current I max Minimum current I min Starting current I st Accuracy: Measurement: Three-phase, 4 wire direct connected active energy meter for domestic customers 3 x 230/400 V U n 50 Hz f n 5 A 00 A 0. A < 0.04 A Class B 2 Energy flow directions Cumulated active energy (total import) Cumulated active energy (total export) Calibration Typical power consumption: Voltage circuit active/apparent power Current circuit apparent power Temperature range: +W = +W L +W L2 +W L3 -W = -W L W L2 W L3 Software calibration for the entire life time < W / VA at U n < 0. VA at I ref Operation: -25 C to +55 C no extension modules -0 C to +40 C with extension modules - 3 -

4 Storage: -40 C to +85 C Enclosure: According to DIN Material: Recyclable polycarbonate with 0% fibre glass, self-extinguishing to EN Protection class II Protection degree IP 5 Optical test and function indicator: LED (infrared) Pulsating (meter constant) 0,000 pulses/kwh Illuminated Power on, no load current (standstill) Display: Life cycle Com-Module Communication: Interface Data transmission rate Mode (controlled by the Com-Module) Interface to Com-Module Functionality HHU Communication Interface Data transmission rate Mode Dot matrix > 2 years SML Protocol (Residential Profile) Optical 9,600 bps - Push mode - Pull mode Optical (D0) Real time data transfer every 2 seconds Digitally signed billing data transfer every minute On request data retrieval Parameterization and settings Control / monitoring SML Protocol Optical (D0) 9,600 bps Pull - 4 -

5 Outside dimensions Connection diagram - 5 -