LEM DCBM 400 Series - Page 7

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21January2021/Version 0
LEM International SA
Chemin des Aulx 8
1228 PLAN-LES-OUATES Switzerland
www.lem.com

Figure 1. Documentation information versus associated publics ...................................... 12
Figure 2. Documentation set for DCBM 400/600 product family ....................................... 12
Figure 3. Namings designating equipment and protagonists ............................................ 18
Figure 4. Product construction ........................................................................................... 19
Figure 5. Typical 50 kW architecture ................................................................................. 21
Figure 6. DCBM in a typical 50 kW EVSE ......................................................................... 22
Figure 7. Typical 350 kW EVSE system ............................................................................ 22
Figure 8. DCBM in a typical 350 kW EVSE ....................................................................... 23
Figure 9. Simplied list of references for 400 A current rating ........................................... 24
Figure 10. Simplied list of references for 600 A current rating ........................................ 24
Figure 11. Full list of references for the DCBM 400/600 product family .............................. 25
Figure 12. Meter Unit dimensions ........................................................................................ 29
Figure 13. Meter Unit aperture for electrical cabinet ........................................................... 29
Figure 14. Sensor Unit dimensions ..................................................................................... 30
Figure 15. DCBM connection .............................................................................................. 31
Figure 16. Connection and wiring diagrams ........................................................................ 32
Figure 17. Sensor Unit integration ....................................................................................... 33
Figure 18. Cable management ............................................................................................ 34
Figure 19. Manufacturer seals ............................................................................................. 34
Figure 20. Import and export energy registers matched with energy ow ........................... 38
Figure 21. Connection for direct counting direction references (DCBM_NxD_x000_0000) 39
Figure 22. Connection for reverse counting direction references (DCBM_NxD_x010_0000) .40
Figure 23. Counting quadrants for the DCBM ..................................................................... 41
Figure 24. Example of energy losses in an EVSE electrical circuit ..................................... 42
Figure 25. Current accuracy graphs with and without cable loss compensation ................. 43
Figure 26. Integration examples using cable loss compensation ........................................ 44
Figure 27. Distribution of R
P
values depending on product designation ............................... 45
Figure 28. Integration example for four-wire measurement ................................................. 46