Vertiv Liebert EXM - Figure 33 One-Line Diagram, Single-Input UPS with 3-Breaker Maintenance Bypass Cabinet and

Vertiv™ | Liebert® EXM
™
50-250kVA, 480V, 60Hz User Manual | 62
Figure 33 One-line diagram, single-input UPS with 3-breaker maintenance bypass cabinet and panelboard
Notes
1. Install in accordance with national and
local electrical codes.
2. Input and bypass must share the same
single source.
3. Bypass and rectifier input and output cables
must be run in separate conduits
4. Control wiring must be run in separate conduits.
5. Internal battery breaker is optional on units with
internal batteries; battery breaker is factory-supplied
with external Vertiv battery cabinets.
MAINTENANCE BYPASS CABINET
* Bypass
AC Input
3 Wire + GND
Output
Busbar
AC Output 480V
3 Wire + GND
BIB - Bypass Isolation Breaker
MBB - Maintenance Bypass Breaker
MIB - Maintenance Isolation Breaker
* External Overcurrent Protection By Others
Field-Supplied Wiring
BATTERY
EXM11011
Rev. 2
UPS CABINET
See Note 6
Static Bypass
BIB
MBB
MIB