Vertiv
™
| Liebert
®
EXM
™
MBC Installation Manual |
16
Figure 6
One-line diagram, dual-input Liebert EXM 10-200kVA UPS with three-breaker Liebert EXM MBC
MAINTENANCE BYPASS CABINET
MIB
BIB
MBB
Static Bypass
Output
Busbar
* Rectifier
AC Input
4 Wire + GND
See Note 6
* Bypass
AC Input
4 Wire + GND
AC Output
208V
4 Wire + GND
See Note 7
UPS CABINET
BATTERY
NOTES:
1. Install in accordance with national and local electrical codes.
2. Input and bypass must share the same single source.
3. A neutral is required from the system AC input source. Vertiv
recommends a full capacity neutral conductor and grounding conductors.
4. Bypass and rectifier inputs and output cables must be
run in separate conduits.
5. Control wiring must be run in separate conduits.
6. A shunt trip breaker with 120V coil is required.
7. Internal battery breaker is optional on UPS with internal batteries;
battery breaker is factory-supplied with external Liebert battery cabinets.
BIB - Bypass Isolation Breaker
MBB - Maintenance Bypass Breaker
MIB - Maintenance Isolation Breaker
* External Overcurrent Protection
by Others
EXM11013
Rev. 3
Field-Supplied Wiring
