American Power Conversion MW Power Supply User Manual


 
Specifications: Low-Impedance/High-Impedance Grounding
28 Symmetra MW 1000 kW 480 V Installation - 990-4112E
From an external grounding resistor, and through a separate conduit, connect a cable to the output
circuit grounding bar.
Note
For high-impedance grounding, the installation must include ground-fault detection
circuitry.