Installation Drawings
Figure 3 Two-Breaker Maintenance Bypass Cabinet, two-input, attached
MBB
FBO
BFB
Two Breaker Maintenance Bypass Cabinet
I | MIB |
|
Critical
Load
Load Bank
(FBO)
FBO | CB1 |
| DC Bus |
| CB2 | ||
Main Input |
|
| N |
Switchgear |
|
| MBJ |
| UPS Module |
| EG |
| Battery |
| MIB - Maintenance Isolation Breaker |
|
| BIB - Bypass Input Breaker | |
| System | MBD | |
| MBB - Maintenance Bypass Breaker | ||
|
|
| FBO – Furnished By Others |
|
|
| N – Neutral |
|
|
| EG – Equipment Ground |
|
|
| MBJ – Main Bonding |
|
|
| I - Option Interlock |
systems only)
Figure 4 Two-Breaker Maintenance Bypass Cabinet, three-input, attached or detached
Two Breaker Maintenance Bypass Cabinet
FBO |
| MBB |
| Critical |
|
|
|
| |
|
|
|
| Load |
|
|
| I | MIB |
|
|
|
| Load Bank |
|
|
|
| (FBO) |
| BFB |
|
|
|
FBO |
|
|
|
|
|
|
| DC Bus |
|
FBO | CB1 |
| CB2 |
|
Main Input |
|
| N |
|
|
| MBJ |
| |
Switchgear | UPS Module |
|
| |
| EG |
| ||
|
|
| ||
| Battery |
| MIB - Maintenance Isolation Breaker | |
|
| BIB - Bypass Input Breaker |
| |
| System | MBD |
| |
| MBB - Maintenance Bypass Breaker | |||
|
|
| FBO – Furnished By Others |
|
|
|
| N – Neutral |
|
|
|
| EG – Equipment Ground |
|
|
|
| MBJ – Main Bonding | |
|
|
| I - Option Interlock |
|
8
