EM720 eXpertmeter Datasheet
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EM720 Power Quality Revenue Meter The EM720 series is a group of state-of-art multi-microprocessor digital instruments that incorporate the capabilities of a power quality analyzer, revenue energy meter, fault and data recorder and programmable controller, oriented for AMR, substation, industrial and commercial areas. These instruments provide three-phase measurements of electrical quantities in power distribution systems, monitoring external events, operating external equipment via relay contacts, fast and long-term on-board recording of measured quantities, transient voltages measurements up to 2KV , fault recording of currents up to 10x nominal current (50A), harmonic analysis and disturbance recording. A high-contrast graphical LCD display with backlight allows easy local meter readings and servicing. Two serial communication ports (infrared and RS-232/RS-485), a USB port, Ethernet and a wireless GSM/GPRS modem allow local and remote automatic meter readings and setup though the supplemental communication software or user data acquisition software. The EM720 is especially designed for utility, industrial and commercial billing metering with high requirements to reliability of power quality monitoring and availability of the device. Highlights High Accuracy Revenue Meter Digital Fault Recorder IEC 62053-22 Accuracy Class 0.2S active and reactive energy polyphase static meter, with comprehensive TOU (Time-of-Use) to fit any utility tariff An embedded fault recorder is capable of recording current faults up to 50 amps. EN 50160 Power Quality Recorder A full-featured programmable power quality recorder provides EN 50160 compliance statistics and reports with IEC 61000-4-30 Class A accuracy Fast Transient Recorder An optional high-voltage fast transient recorder (EM720T) detects impulsive and low frequency oscillatory transient overvoltages with peaks up to 2kV and durations from 16/20 microseconds. Models The unit is available in two models: EM720 High accuracy revenue energy meter class 0.2S with Power Quality Analyzer according to EN50160 Standard, all the basic metering, control, and fault and event recording capabilities All the EM720 functionality plus transient recording capabilities Speciiifiiicattiionssarre ssubjjjectttto change wiiithouttnottiice...Copyrriightt© 2011 SATEC Lttd... Spec ff c atio ns are su b e ct to change w tthout notic e Copyrig ht © 2011 SATEC Ltd Spec ca on a e ub ec o change w hou no ce Copy gh © 2011 SATEC L d Septtemberr2011 Septe mber 2011 Sep embe 2011

EM720 eXpertMeter Features Billing/TOU IEC 62053-22 Accuracy Class 0.2S active and reactive energy polyphase static meter Time-of-Use, 10 billing energy and maximum demand registers, 8 tariff rates, 4 seasons x 4 types of days, 8 tariff changes per day One-time easy programmable tariff calendar schedule, one-time programmable or calendar scheduled daylight savings switch dates Configurable triggering an end of billing period: automatic monthly, local from the front display (password protected) or via communications Automatic recording billing energy, maximum demand and cumulative maximum...

EM720 eXpertMeter Data Recorders Sixteen fast Data recorders Programmable data logs on a periodic basis and on any internal and external trigger; triggering from the Fault recorder, PQ recorder or control setpoints; exporting data trends in PQDIF file format Fast fault and PQ data profiling (trending) triggered from the Fault and PQ recorders: ½ cycle to 10-min RMS envelopes; up to 20 pre-fault and post-fault cycles Programmable Logical Controller Embedded Programmable Controller: 16 control setpoints OR/AND logic, extensive triggers, programmable thresholds and delays, relay control,...

EM720 eXpertMeter Technical Specifications The EM720x is offered in two versions: ^ 120V for connection via PTs ^ 480V for direct connection Voltage rating 120V version: (voltage peak up to 300V) 480V version: 0 up to 320 V RMS, >2 (voltage peak up to 700 V) Temporary over voltage 240 V RMS (120V between live conductors and version) version) Transient over voltage 2 kV peak between live conductors and earth (from 15 ^s up to milliseconds) Starting voltage 0.5%Un Burden per phase < 0.2 VA (120V ver.) 1 minute phase-to-ground (IEC 62053-22, protective class II) Rated impulse...

EM720 eXpertMeter High range power supply (480V version) 100-120 V AC 50/60 Hz 45 - 250 V AC Low range power supply (120V version) Burden as per IEC 62053-61 3 W and requirements BATTERY BACKUP POWER SUPPLY (BPS) Build-in rechargeable Li-ion Up to 6 hours battery, Redundant MPS backup AUX. POWER SUPPLY (APS) Low DC Power Supply, Redundant MPS DC PS module - Optional 24V DC ± 15% DC input Power Consumption 6W maximum Dielectric insulation withstand 4 KV AC @ 1mn Terminals for wires size 2 x 4 mm2 REAL TIME CLOCK BATTERY BACKUP According to IEC 61038 > 3 consecutive...

EM720 eXpertMeter communication port Versatile RS-232/485 Max. Baud rate 115.2 kb/s Protocols MODBUS RTU/ASCII and DNP3.0 Terminals for wires size 5 x 2.5 mm2 IRIG-B MODULE Isolation 4 kV AC @ 1mn Time code signal Unmodulated (pulse-width coded) Signal Level Unbalanced 5V Connector Type BNC Recommended cable 51Q low loss - RG58A/U (Belden 8219 or equivalent), BNC connector Recommended GPS Masterclock GPS-200A time code generator 10/100 BASE T (Optional) Plug-in modules Field installable network communication port Wired LAN IEEE 802.3 communication port...

EM720 eXpertMeter Standards Compliance EMC IEC standards IEC 61000-2 Insulation Impulse, protective class II - IEC 62052-11: 6KV /500Ω @ 1.2/50 μs Immunity ESD - IEC61000-4-2/IEC 62052-11: 15KV /– air/contact Electromagnetic RF Fields - IEC61000-4-3/IEC 62052-11: and voltage circuits and 2 KV for auxiliary circuits SURGE - IEC61000-4-5/IEC 62052-11: 4KV on current and voltage circuits and 1 KV for auxiliary circuits Conducted Radio-frequency–IEC61000-4-6/IEC 6205211: 10V @ 0.15Mhz – 80MHz Power Frequency Magnetic Fields–IEC61000-4-8 Damped oscillatory waves–IEC61000-4-12/IEC 62052-11: CMM...