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21January2021/Version 0
LEM International SA
Chemin des Aulx 8
1228 PLAN-LES-OUATES Switzerland
www.lem.com
The goal of this choice is to always have registers as follows:
• Energy coming from the electrical grid into the vehicle increments Import energy register.
• Energy coming from the vehicle back to the grid increments Export energy register
Figure 20: Import and export energy registers matched with energy flow
5.2.3. Voltage side
Regardless of the product reference, one of the following mounting options must be chosen:
•
Mounting the Sensor Unit on the negative side of the DC link, referred as "Low side mounting"
•
Mounting the Sensor Unit on the positive side of the DC link, referred as "High side mounting"
These possibilities offer flexible integration in existing environments. Hence the choice depends
on existing architecture or foreseen integration. Decision influences how voltage inputs must be
connected, as described in next sections.
Expo
rt energy
Imp
ort ene
rgy
