Operation Modes
The display automatically indicates the current UPS operation mode. See the table below for examples of operation modes and their descriptions.
Operation mode descriptions:
Operation Mode | Description of Operation Mode |
|
|
Normal Operation | The inverter supplies the load. The charger uses the mains supply to feed the |
| inverter. |
|
|
Battery Operation | The inverter supplies the load. The battery bank supplies the inverter. In battery |
| operation the load support time is limited; when the batteries are discharged the |
| UPS is unable to supply the load. |
|
|
Bypass Operation | The bypass static switch supplies the load, meaning that the load is supplied |
| directly from the bypass mains. When working in bypass operation the UPS can |
| switch to battery operation if the bypass mains fails. |
|
|
Charger Only | The charger is recharging the battery. The inverter is shut down. |
|
|
Economy Operation | The UPS is in permanent bypass operation and will only switch to battery |
| operation if the bypass mains is out of tolerance. |
|
|
Hot Standby | In redundant configurations, one UPS can switch off the inverter, but still keep |
| the inverter ready for immediate start in case another UPS fails. |
|
|
In standby mode, the UPS has no output voltage.
Note
Users do not require electrical qualifications to switch the UPS to and from standby mode/normal operation.
Note
AIS 5000 400V Installation Manual | 71 |
