Eaton 9PX EBM 240V, Инструкция по установке и эксплуатации, Страница: 22 / 44

Page 22
8-11kVA EU_EN
3.9 Installation depending on the system earthing arrangement (SEA)
z
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
8
10
11
or
Normal AC
Load
Main low
voltage
switchboard
(MLVS)
Isolation
transformer
Bypass AC
Isolation
transformer
Normal AC
Bypass AC
Main low
voltage
switchboard
(MLVS)
Load
8
10
11
z 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,
z
and wires cross-sections and lengths of Normal and Bypass inputs are identical,
z
and upstream protection is provided by only one switch with RCD (Residual Current
z
Device) for Normal and Bypass AC inputs.
3. Installation