Parallel System Overview
The UPS can support up to 4 UPSs in parallel for capacity and up to 3+1 UPSs in parallel for redundancy.
NOTE: In a parallel system,
an external maintenance bypass disconnect device (Ext. MBB) must be
provided and the internal maintenance disconnect device IMB and MBB
(marked with an * in the diagrams) must be padlocked in the open position.
UPS with One Internal Switch
| UIB | Unit input disconnect device |
| SSIB | Static switch input disconnect device |
| UOB | Unit output disconnect device |
| SIB | System isolation disconnect device |
| BB | Battery disconnect device |
| IMB | Internal maintenance disconnect device |
| Ext. MBB | External maintenance bypass disconnect device |
NOTE: In
Schneider Electric literature, 'disconnect device' is used as a generic
term covering circuit breakers or switches as their position may vary
depending on configuration. Details about the individual configuration
are found in the electrical diagram and/or by reading the symbol on
the front of each disconnect device.
Parallel System – Single Mains (One Internal |
Parallel System – Dual Mains (One Internal |
UPS with Four Internal Switches
| UIB | Unit input disconnect device |
| SSIB | Static switch input disconnect device |
| UOB | Unit output disconnect device |
| SIB | System isolation disconnect device |
| BIB | Bypass input disconnect device |
| MIB | Main input disconnect device |
| BB | Battery disconnect device |
| MBB | Maintenance bypass disconnect device |
| Ext. MBB | External maintenance bypass disconnect device |
NOTE: In
Schneider Electric literature, 'disconnect device' is used as a generic
term covering circuit breakers or switches as their position may vary
depending on configuration. Details about the individual configuration
are found in the electrical diagram and/or by reading the symbol on
the front of each disconnect device.
The UPS can support up to 4 UPSs in parallel for capacity and up to 3+1 UPSs in parallel for redundancy.
Parallel System – Single Mains (Four Internal Switches)
Parallel System – Dual Mains (Four Internal Switches)
