Kohler PW 9000DPA, User Manual

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UPS306-01-00 PowerWAVE 9000 DPA User Manual Dated 01-06-2010
3-5
3: Installation
These illustrations show that the UPS cabinet requires the following power cables:
Rectifier (In):
• three-phase (1L1, 1L2, 1L3)
• neutral (1N)
• protective earth (PE) connection for the rectifier input
Bypass (In):
• three-phase (2L1, 2L2, 2L3)
• neutral (2N)
• protective earth (PE) connection for the bypass if used as ‘Dual Feed’ input
Load (Out):
• three-phase (3L1, 3L2, 3L3)
• neutral (3N)
• protective earth (PE) connection for the load output
(External) Battery:
• Plus (+)
• Common (N)
• Minus (-)
• protective earth (PE) connection for the external batteries
Input neutral grounding
Figure 3.2 Input neutral grounding
Key Point: Input neutral is required to operate the rectifier.
In TN-S systems, no 4-pole input switches or circuit breakers should be used.
During battery operation the neutral must always be grounded.
0V
230V
UPS