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Revenue Meter with Advanced Power Quality Capabilities eXpertMeter - EM720

Revenue Meter with Advanced Power Quality Capabilities eXpertMeter - EM720. ExpertMeter – EM720. “All in one” High Performance Meter: Revenue meter Power Quality Analyzer Fault Recorder Transient Recorder. Revenue Meter. IEC 62056-21 protocol support (Infra red)

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Revenue Meter with Advanced Power Quality Capabilities eXpertMeter - EM720

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  1. Revenue Meter with Advanced Power Quality CapabilitieseXpertMeter - EM720

  2. ExpertMeter – EM720 “All in one” High Performance Meter: • Revenue meter • Power Quality Analyzer • Fault Recorder • Transient Recorder

  3. RevenueMeter • IEC 62056-21 protocol support (Infra red) • Accuracy according to IEC 62053-22 Class 0.2S • TOU up to 8 tariffs and 4 seasons

  4. PQ Analyzer • 3 Voltage and 4 Current inputs • Voltages and Currents Harmonics and Interharmonics measurement: IEC 61000-4-7 class I • IEC 61000-4-15: Flicker measurement • Complete Power Quality Reports per EN50160 and • IEC 61000-4-30 Class A

  5. Fault Recorder • Four measured and recorded currents up to 50 A (10In) • Chargeable Back-up battery – 2.5 hours • GPS Time synchronization • Sequence of events with 1 ms accuracy

  6. Transient Recorder • Pick-Voltages up to 2000 V • Time 19mcs to 10ms • 4 Voltage waveforms captured • 3 Phase and neutral to ground

  7. Modules (Hot swap) • Field Replaceable I/O options • Field Replaceable Advanced Communication options

  8. EM720 - Commutations Communication ports: • Ethernet, • USB, • IR-port • RS232/485, • GSM/GPRS modem • Protocols: • IEC61850, • Modbus RTU, • ASCII, SMTP, • Web-server

  9. SATEC DI/DO functions Digital InputStatus input / Pulse input Digital OutputRelay / Pulse relay

  10. APPLICATIONS Utilities Transmission | Distribution | Substations Industrial Power Stations | Industrial Plants | Process Control Commercial Big Commercial Centers

  11. Using the EM720 in “Shaar Hair” building complex project for fault detection

  12. I II Detection of PQ failures using EN50160 STD Samples of using EM720 Revenue Meter

  13. Substation B Substation A I II A Device #2 Public B C D 1000 1000 1000 1000 630 1000 Device #3 Device #1 Supply diagram of the building project

  14. Parameters of devices • Device 1: (EM720T, 0.4 kV) Nominal primary current = 400 A Nominal primary voltage = 230 V • Device 2: (EM720T, 22 kV) Nominal primary current = 100 A Nominal primary voltage = 22 kV • Device 3: (EM720T, 0.4 kV) Nominal primary current = 1200 A Nominal primary voltage = 230 V

  15. Statistics EN50160 – Compliance report

  16. Voltage Dips report :Device-3 (1/02-7/05)

  17. List of dips’ events (30/04-4/05)

  18. Voltage Dip RMS plot V31 (60%Un)

  19. Device #1 (0.4 kV): general voltage dip

  20. Device #2 (22 kV): general voltage dip

  21. Device #3 (0.4 kV): general voltage dip

  22. Device #1 (0.4 kV): Voltage dip before interruption

  23. Device #2 (22 kV): Voltage dip before interruption

  24. Device #3 (0.4 kV): Voltage dip before interruption

  25. Device #1 (0.4 kV): Voltage recovery + Inrush current

  26. Device #2 (22 kV): Voltage recover + Inrush current

  27. Device #2, Phase L1, Inrush current - 570 A=5.7 In

  28. Device #3 - Voltage recovery

  29. Device #3High even individual harmonics-12.6% during voltage recovery

  30. Device #1 (0.4 kV)Spectrum graph and table – high harmonics Voltage THD = 16%, Current THD = 45.9%

  31. Device #2 (22 kV)Spectrum graph and table – high harmonics Voltage THD = 14.3%, Current THD = 25.1%

  32. Device #3 (0.4 kV)Spectrum graph and table – high harmonics Voltage THD = 13.9%, Current THD = 24%

  33. Comparison of THD (0.2 sec) • Device 1: (EM720T, 0.4 kV) Voltage THD =16% Current THD =45.9% • Device 2: (EM720T, 22 kV) Voltage THD =14.3% Current THD =25.1% • Device 3: (EM720T, 0.4 kV) Voltage THD =13.9% Current THD =24%

  34. Voltage Peaks due to high harmonicsHigh Voltage Amplitude - 380V= Un +18%Un (Phase L3, Device #1)

  35. Comparison - voltage peak value • Device #1 (0.4 kV), High Voltage Amplitude - 380V= Un +18%Un • Device #2 Voltage Amplitude - 33 kV = Un +6.1%Un • Device #3 Voltage Amplitude - 340V= Un +4.5%Un

  36. Device #2 - Real time Current TDD (9.9%)

  37. Device #2 - Current TDD trend (22 kV)

  38. Device #2 THD & TDD compliance • Voltage THD=1.7% - OK • Current TDD=9.9% - NOT OK (Prohibited) • Standard IEEE 519-1992: TDD=5%

  39. Summary and Conclusions • High level dips cause to servers and elevators’ failure of operation • High level short period harmonics cause to increase of voltage amplitude that damaged the elevator controller • Increase of TDD by 9.9% totally damaged the reactive power regulator together with full power shut down in the building • The EM720 allowed the detection of all the root cause of these sever phenomenon

  40. Turbine application Using the SATEC product for failure detection of turbine operation

  41. Detection of turbine failure – big difference between two identical turbines of 13.4%

  42. After partial problem fix the difference dropped to 9.5% - less operating cost

  43. Failure detection of pumps operation • Using the basic following formula the SATEC meter can detect pump’s operation problem measuring the pump’s efficiency • Efficiency=(Kw/ton) • Efficiency should be constant. If changes during operation, it shows a problem in the pump’s operation • SATEC meters detects in operational sites such a failure during the pump’s operation.

  44. Thank You

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