Stack Controller Grounding - Nuvation Energy High-Voltage BMS Installation Manual

Nuvation Energy High-Voltage BMS - Installation Guide
Figure 17. Example DC Filter Schematic
When using DC filters, please be aware that it shunts high-frequency noise to earth. If the inverter is
not driving an insulated neutral system, there will be high current pulses flowing in the system earth
which can trip ground fault detectors. It might be necessary to install an isolation transformer
between the inverter and the grid to remove the high current pulses.
Figure 18. Example Isolation Transformer Installation Diagram

6.3.2. Stack Controller Grounding

sc_stackbus
If communication faults are occurring, it might be alleviated by providing a dedicated
ground connection for the Stack Controller. In the typical installation, the Stack Controller is grounded
through the Power Interface via the Stack Bus cable. By providing a direct connection to ground, any
Document ID: NE-IG-001 40 Rev 2.1, 2020-03-13