Tripp Lite 9PX11KPM Eaton 9PX 8000 9PX 11000 9PX EBM 240V Installation and Use - Page 23

Installation depending on the system earthing arrangement SEA

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ENGLISH 3. Installation 3.9 Installation depending on the system earthing arrangement (SEA) • UPS with common Normal and Bypass AC inputs Main low voltage switchboard (MLVS) Bypass AC 11 10 8 Normal AC Load Change in SEA between upstream and downstream or galvanic isolation required Main low voltage switchboard (MLVS) Bypass AC 11 Isolation transformer 10 8 Normal AC Load • UPS with separate Normal and Bypass AC inputs Main low voltage switchboard (MLVS) Bypass AC 11 Isolation transformer 10 8 Normal AC Load Change in SEA between upstream and downstream or galvanic isolation required Main low voltage switchboard (MLVS) Bypass AC 11 Isolation transformer Isolation transformer 10 8 Normal AC Load The transformer is not necessary if: • Normal and Bypass inputs are connected to the same source, * • and wires cross-sections and lengths of Normal and Bypass inputs are identical, • and upstream protection is provided by only one switch with RCD (Residual Current Device) for Normal and Bypass AC inputs. 8-11kVA US_EN Page 23

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Page 23
8-11kVA US_EN
ENGLISH
3.9
Installation depending on the system earthing arrangement (SEA)
•
UPS with common Normal and Bypass AC inputs
8
10
11
Main low
voltage
switchboard
(MLVS)
Bypass AC
Normal AC
Load
Change in SEA between upstream and downstream or galvanic isolation required
Isolation
transformer
Normal AC
Bypass AC
Main low
voltage
switchboard
(MLVS)
Load
8
10
11
•
UPS with separate Normal and Bypass AC inputs
8
10
11
Bypass AC
Normal AC
Load
Main low
voltage
switchboard
(MLVS)
Isolation
transformer
Change in SEA between upstream and downstream or galvanic isolation required
Isolation
transformer
Isolation
transformer
Bypass AC
Normal AC
Load
Main low
voltage
switchboard
(MLVS)
8
10
11
*
The transformer is not necessary if:
•
Normal and Bypass inputs are connected to the same source,
•
and wires cross-sections and lengths of Normal and Bypass inputs are identical,
•
and upstream protection is provided by only one switch with RCD (Residual Current
Device) for Normal and Bypass AC inputs.
3. Installation