User’s Manual
different types of Galaxy PW™ systems
single-UPS unit
A | B |
1 |
|
| D |
| C |
2 |
|
Fig. 2
parallel UPS system
See figure 3 showing two
|
| Q3BP |
| 1 | Q5N |
|
| |
S | 2 |
|
2 |
| Galaxy 1 |
|
| |
| 1 |
|
| 2 | Galaxy 2 |
|
|
Fig. 3
When increased power is required (two to four parallel units), an external bypass must be added (see figure 4).
|
| Q3BP |
| 1 | Q5N |
|
| |
2 | 2 |
|
| Galaxy 1 | |
|
| |
| 1 |
|
| 2 | Galaxy 2 |
|
| |
| 1 |
|
| 2 | Galaxy 3 |
|
| |
| 1 |
|
| 2 | Galaxy 4 |
|
|
Fig. 4
isolation and protection devices
(See figure 1 on previous page):
■Q1 (Molded circuit breaker NA):
❏isolation of the rectifier/charger (A) from the normal AC source (1);
❏rectifier/charger (A)
■QF1 (circuit breaker):
❏battery (D) protection and isolation; ■ Q5N (switch):
❏isolation of the UPS (B) from the load; ■ Q4S (switch):
❏isolation of the static bypass (C) from the bypass AC source (2);
■ Q3BP (switch):
❏bypass switch for maintenance;
■FUE (fuses):
❏protection of the rectifier/charger (A) from the normal AC source;
■ FUS (fuses):
❏protection of the inverter (B) from the load.
Note:
■switch Q3BP is lock on open position on parallel UPS systems constituted to increase available power.
external bypass for parallel UPSs and the hot-swap option
See figure 4.
■Q5N: isolation of the inverters of all the parallel UPS systems from the load;
■Q3BP: bypass for maintenance.
Introduction | 5 |