Powerware 9170 User Manual page 104

Specifications
Table 15. Isolation
Models 0650C and 0660C
Output Neutral-to-Ground
Bonding
Model 0650I, 0660I, and 0660J
Isolation, Including Output
Neutral-to-Ground Bonding
96
±3% load regulation (under any line, load, or battery condition)
Neutral is carried through from input to output; a separate
neutral-to-ground bond is not required
True, separately-derived power source as defined by National Electrical
Code Article 250-5d, with output neutral bonded to ground. No direct
connection between input and output; neutral-to-ground bond is
required; other local codes may take precedence.
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