Table 7. Settings (continued)
Description | Available Settings | Default Setting | |
|
|
| |
Qualify Bypass | [Always] [Never] [Bypass Disabled] | Always | |
| If Always, Bypass operation is allowed when: |
| |
| S | Bypass voltages > the value set for Bypass |
|
|
| Voltage Low Limit |
|
| S | Bypass voltages < the value set for Bypass |
|
|
| Voltage High Limit |
|
| S | Bypass frequency > (nominal frequency |
|
| S | Bypass frequency < (nominal frequency +3 Hz) |
|
| S | Inverter is synchronized with Bypass when |
|
|
| unsynchronized transfers are disabled by the |
|
|
| value set for Unsynchronized Transfers |
|
| If Never, Bypass operation is always allowed; voltage |
| |
| and frequency limits are not in use. |
| |
| If Bypass Disabled, Bypass operation is prohibited. |
| |
|
|
| |
Synchronization Window | [Sync Disabled] [±0.5 Hz] [±1.0 Hz] [±1.5 Hz] | ±3.0 Hz | |
| [±2.0 Hz] [±2.5 Hz] [±3.0 Hz] |
| |
| If ±3.0 Hz, on inverter operation the inverter tries to |
| |
| synchronize with the Bypass when the Bypass |
| |
| frequency is not more than 3 Hz from the nominal |
| |
| output frequency; otherwise, the inverter goes to |
| |
| nominal frequency. On Bypass mode, the sync |
| |
| window is always ±3 Hz. |
| |
| NOTE: In Sync Disabled state, if the Bypass |
| |
| operation is allowed, the UPS synchronizes only |
| |
| when it is operating on Bypass mode. |
| |
|
|
| |
Unsynchronized Transfers | [Enabled] [Disabled] | Enabled | |
| If Enabled, unsynchronized transfers to the Bypass |
| |
| are allowed. |
| |
| If Disabled, unsynchronized transfers to the Bypass |
| |
| are not allowed. |
| |
| NOTE: The Qualify Bypass setting may overrule the |
| |
| Unsynchronized Transfers setting. |
| |
|
|
| |
External Battery Module (EBM) | [0] [1] | 0 | |
| See “Configuring the UPS for an EBM” on page 52. |
| |
|
|
|
|
44 Operation
