Figure 66. 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 67. Example Isolation Transformer Installation Diagram
Link Bus Power
While the communication interface between the Stack Switchgear and the Cell Interface is a daisy-
chain, the power supplied to the Cell Interface from the Stack Switchgear is a bus. This results in the
power twisted pair in the Link Bus cable carrying power up the entire length of the chain. This
Nuvation Energy High-Voltage BMS - Product Manual
Document ID: NE-PM-003
102
Rev 1.2, 2021-03-03
Curie Update 1
