American Power Conversion Symmetra MW User Manual
Page 32
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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.
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