ABB Zenith ZTG 30 Operation, Maintenance And Installation Manual page 84

Automatic transfer switches
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84
Z e n i t h Z T G s e r i e s AT S , O P E R AT I O N , M A I N T E N A N C E , A N D I N S TA L L AT I O N G U I D E
Message
S2 overvoltage
S2 phase missing
S2 unbalance
S2 phase rotation
Frequency Difference
S2 invalid frequency
set in parameters "Drop-out frequency,
High current alarm
Open I failure, Alarm
LED blinking
Close I failure, Alarm
LED blinking
Open II failure, Alarm
LED blinking
Close II failure, Alarm
LED blinking
Switch position alarm,
Alarm LED on
Pole temperature
alarm
Contact wear alarm
Local bus
Ethernet
disconnected
Fire Fighting
Control Voltage
Failure
Control Voltage Low
Configuration Error
IEC 61850 Error
Ekip Com Hub Alarm
Table 6.1 Alarms-list in level 3 and 4, LCD and touch control interfaces
Voltage of source 2 is over the
threshold level set in parameter
"Dropout voltage, upper threshold"
One or two phases of
source 2 are missing
Phases of source 2 are not symmetric
Phase rotation of source 2 is
different from the value of
parameter "Phase sequence"
Frequency difference of voltage
sources is greater than 3 Hz while
inphase monitor is on
Frequency of source 2 is out of range
upper threshold" and "Drop-out
frequency, lower threshold"
Measured current is higher than
ten times the nominal value
Switch transfer from
position I to O or II failed
Switch transfer to position I failed Reset alarm by pressing Auto button or
Switch transfer from
position II to O or I failed
Switch transfer to position II failed Reset alarm by pressing Auto button or
More than one switch position
indication inputs are activated
Measured pole temperature is too high
Switch contact wear is near the limit
that requires maintenance
Communication between HMI
and switch controller is off
Ethernet module not connected
Fire fighting input activated
Control voltage dropped
during switch control
Switch control voltage is
below the minimum
Invalid configuration
IEC 61850 failure
Ekip Com Hub failure
Fault
Check the correlation between power
source and device configuration
Check the power source
Check the power source
Connect the phases according
Alarm is active and transfer operations
disabled as long as the frequency
difference is above the accepted level
Check the correlation between power
source and device configuration
Alarm is active and transfer operations
disabled as long as the high current
Reset alarm by pressing Auto button or
via menu page Operation / Alarm Reset
via menu page Operation / Alarm Reset
Reset alarm by pressing Auto button or
via menu page Operation / Alarm Reset
via menu page Operation / Alarm Reset
Switch service needed
Switch service needed
Switch service needed
Alarm is active and disables transfer
operations as long as the input is active
Check parameter values
Check configuration file
Action
and connections
to the configuration
status remains
Check connection
Check connection
Check power source
Check power source
Check configuration

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