MRE-44S MRE-44S/DC24V energy meter Comprehensive consumption data anaysis in rea time High resoution and accuracy (cass 0.) even in harmonicay distorted grids Aso anayses harmonics (optiona, up to 50 Hz) Compatibe with a popuar transformer types Integrated web browser for appication-compatibe configuration and visuaization Integration into distributed contro systems via fiedbuses
Overview of features Due to its compact size and the use of interface technoogies such as Modbus TCP, the MRE is perfecty suited for use in instaations with mutipe oads that require monitoring. To do so, one meter is connected to each corresponding power termina or oad to be measured. Thans to precise measurements and sophisticated cacuation processes, the MRE records highy precise vaues for the eectrica quantities, regardess of the type of oad or the grid situation (e.g. power eectronics providers). It can be used in a conventiona systems operating at 6.7 Hz, 50 Hz and 60 Hz. As a resut of the high accuracy grade (current 0., votage 0.05) and numerous features that can be enab- ed such as an expansion of the grid frequency range from 5 Hz to 400 Hz, a compete power quaity anaysis and the anaysis of harmonics up to 50 Hz it can be used fexiby for neary a measuring tass reated to eectrica infrastructure in industria settings as we as office and administrative buidings. High-precision measuring, recording and archiving of a important eectrica variabes. For the identification of savings potentias and deviations in the context of energy management as per DIN EN ISO 5000. Monitoring of power quaity () through compete anaysis and comprehensive recording of harmonics up to 50 Hz. Monitoring of individua oads or entire grids aows for the identification of probems or the monitoring of critica components. Continuous management through an integrated web browser for visuaisation and parameterisation. Quic access to a reevant data at a times via mobie devices or aptops, and without additiona software. Sophisticated data recording via the data ogger aows for ong-term anayses in high resoution and can aso be used for statistica data anaysis and faut prognosis. Areas of appication Key areas Conformity / Standards Industry Infrastructure Testing devices Service sector Pubic sector Moduar measurement for mutipe outets Accuracy cass 0. for eectricity and 0.05 for votage in accordance with IEC 6557-2 High fexibiity and intuitive operation Pug and Pay functionaity in accordance with IEC 6000-4-30 via a software option Ficermeter in accordance with IEC 6000-4-5 Records harmonics in current and votage up to 50 Hz Highy precise measurements in the additiona frequency range of 5 400 Hz IEC 6557-2 IEC 6000-4-5 IEC 6000-4-30 ISO 4025 Connectivity / Ethernet architecture Des Crawer / Data ogger PLC MRE energy meter
Discovery Too Web server Fexibe The MRE is configured with a preset IP address upon deivery. With the free discovery too, the device can easiy be ocated from any computer in a networs. No specia nowedge is required, nor is it necessary to modify the communication parameters of your own computer. Whether you are using a fixed IP address or DHCP, the discovery too aows the basic settings of the MRE's communication interface to be configured as required. The integrated web server provides a cear interface for configuring the MRE for each individua appication. In just a few cics, the MRE can be configured for the circuit to be measured. The integrated search function aows the desired parameters to be found quicy. Important variabes can be added to a favourites ist and dispayed graphicay. Two access eves protect the device from unauthorised access and ensure a high degree of security. Simpified wiring with PoE Measurements cose to oad (transformer and meter) Data ogging and customised dashboards via optiona data ogger Fu functionaity and individua protective functions can be optionay integrated Transformers of various accuracy grades avaiabe as accessories Access and configuration via the Discovery too and the web server Versions and software pacages asic Power-Quaity * Utra Precise * asic version with the foowing features: Software pacage for determining energy quaity: Software pacage for highy precise measurements: Measurement and highy precise cacuation of a variabes corresponding to IEC 6557-2 cass 0. (current) and 0.05 (votage) Harmonics up to 0 Hz Modbus, TCP, web server, and aarms can be freey parameterised Externa data ogger (optiona) Features in the basic version metering in accordance with IEC 6000-4-30 Ficermeter IEC 6000-4-5 Compiation of reports in accordance with EN 5060 when used together with data ogger Extended measurement range up to 50 Hz (cf. recommendations of IEC 6000-4-30) for determining switching frequencies, puse patterns, and supraharmonics Customised protective features, e. g. for capacitor bans and rectifiers A basic features can optionay be expanded with Frequency range 5 400 Hz * Avaiabe from Q3/208
Connectors Technica data V+ V- 0+ 0- I I2 I3 GND A LAN/PoE 24V I/O MRE RS485 Genera data Insuation votage L-N Overvotage category Poution category Weight MRE-44S/DC24V 300 V III II 40 g Votage Current Dimensions W H D 88 x 90 x 58.5 mm V V2 V3 VN PE I I I2 I2 I3 I3 IN IN Connector wire cross sectiona area max. 2.5 mm 2 Protection cass IP20 Ambient operating temperature -25...55 C Suppy votage L L2 L3 N L L2 L3 N Designated suppy votage Designated suppy votage range Power over Ethernet Power consumption Measuring circuit 24 VDC 8 30 VDC Yes 5 W PE PE No. of votage inputs 4 Votage L-N / L-L 230 VAC/400 VAC Connection exampe for a four-wire TN-S grid. Votage measurement range L-N / L-L 5 276 VAC/5 480 VAC No. of current inputs 4 Current 5 A Frequency range (base frequency) 30 65Hz / 5 400 Hz Harmonics up to 0 Hz / 50 Hz Dimensions Samping frequency per channe andwidth 20 S/s / 00 S/s 0 Hz / 50 Hz 90 45 Measured quantities and accuracy in accordance with IEC 6557-2 (PMD Sx) Active energy E 0.2 Votage U (L N) 0.05 Current I from measured vaue / range 0. Frequency 0.02 Power factor cos phi 0.5 Active power P 0. Reactive power Q Apparent power S 0.2 88 4.5 44 54 THD U THD I Inputs/Outputs Inputs anaogue digita 24 V / 0 0 V Transistor outputs NO 3 x x Interfaces Sampe cacuation RS-485 interface RS-485 transfer rate Ethernet interface Ethernet transfer rate RTU modbus 9200 baud TCP modbus 00 Mbit Number of harmonics = Harmonics ase frequency 0 Hz 50 Hz = 200 harmonics Sampe cacuation on facing page.
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