Shield T3 60 – 500KVA User Manual
53
Table 3-7 UPS Event List
NO.
UPS events
Description
1
Fault Clear
Manually clear fault
2
Log Clear
Manually clear History log
3
Load On UPS
Inverter feeds load
4
Load On Bypass
Bypass feeds load
5
No Load
No load
6
Battery Boost
Charger is working in boost charging mode
7
Battery Float
Charger is working in float charging mode
8
Battery
Discharge
Battery is discharging
9
Battery
Connected
Battery is connected already
10
Battery Not
Connected
Battery is not yet connected.
11
Maintenance CB
Closed
Manual maintenance breaker is closed
12
Maintenance CB
Open
Manual maintenance breaker is opened
13
EPO
Emergency Power Off
14
Module On Less
Available power module capacity is less then the load
capacity. Please reduce the load capacity or add extra power
module to make sure that the UPS capacity is big enough.
15
Generator Input
Generator is connected and a signal is sent to the UPS.
16
Utility Abnormal
Utility (Grid) is abnormal. Mains voltage or frequency
exceeds the upper or lower limit and results in rectifier
shutdown. Check the input phase voltage of rectifier.
17
Bypass
Sequence Error
Bypass voltage Sequence is reverse. Check if input power
cables are connected correctly.
18
Bypass Volt
Abnormal
This alarm is triggered by an inverter software routine when
the amplitude or frequency of bypass voltage exceeds the
limit. The alarm will automatically reset if the bypass
voltage becomes normal.
First check if relevant alarm exists, such as “bypass circuit
breaker open”, “Byp Sequence Err” and “Ip Neutral Lost”. If
there is any relevant alarm, first clear this alarm.
1. Then check and confirm if the bypass voltage and
frequency displayed on the LCD are within the setting
range. Note that the rated voltage and frequency are
respectively specified by “Output Voltage” and “Output
Frequency”.
2. If the displayed voltage is abnormal, measure the actual
bypass voltage and frequency. If the measurement is
abnormal, check the external bypass power supply. If the
alarm occurs frequently, use the configuration software to
