Operation
Status/Alarm Message Areas
The status/alarm message areas display vital information about the operation of the UPS system. During normal operation no alarm messages should be present. Changes in the status of the system and possible alarm conditions can be monitored. Both the status and the alarm messages are dis- played in reverse video
The following lists show the status and alarm messages that may be displayed in these areas. For more information and the corrective actions for these messages, refer to Table 4 in this section.
Item 6 - Status Messages
Static Switch Connected
Static Switch Disconnected
OK To Transfer
Not OK To Transfer
Item 7 - Alarm Messages |
|
Input Fail | Output Over/Underfrequency |
DC Ground Fault | Output Undervoltage |
DC Capacitor Fuse Blown | Output Overvoltage |
Battery CB Open | Overload |
Battery Discharging | Overload Transfer |
Low Battery Warning | Inverter |
Low Battery Shutdown | Reverse Power |
DC Overvoltage Shutdown | Rectifier Fuse Blown |
Load On Bypass | Inverter Fault |
Auto Retransfer Primed | Hardware Shutdown |
Manual Reset/Retransfer | Emergency Off |
Static Switch Unable | Battery Cycle Buffer Warning |
Bypass Not Available | Ambient Overtemperature |
Bypass Phase Sequence Wrong | Blower Failed |
Control Power Fail | Equipment Overtemperature |
Battery Overtemp | Overtemperature |
Battery Exercise |
|
Figures 8 through 11 illustrate how the Monitor/Mimic Display screens depict the power flow through the UPS.
Figure 8 Monitor/Mimic display example: Normal power flow
BYPASS INPUT | ||
480V | 480V | 480V |
| 60.0 Hz |
|
UPS INPUT PWR | ||
480V | 480V | 480V |
350A 350A 350A |
BATTERY
VOLTS 540
AMPS 15 CHARG
©
UPS RATINGS | ||
|
| |
RATED 500 KVA | ||
OUTPUT VOLTAGE | ||
480V | 480V | 480V |
| 60.0 Hz |
|
OK to Transfer
Static Switch Connected
| LOAD |
|
270 KVA / 217 KW | ||
A | B | C |
325A | 325A | 325A |
24