ComAp MainsPro G99TT Global Manual page 23

Meaning of signaling LEDs
LED
TRIP
U
f
LOM
MainsPro G99TT 1.0.0 Global Guide
Color
The unit has the appropriate outputs in TRIP position and the unit
Red
is sensing a fault situation
Red The unit has the appropriate outputs in TRIP position, but the unit
flashing is sensing fault-free situation. Fault reset is possible.
Dark The unit has no output in TRIP position
Red Voltage of any phase is above threshold for 1st or 2nd stage
flashing overvoltage
Voltage of any phase is under threshold for 1st or 2nd stage
Red
undervoltage
Voltage unbalance (amplitude) is indicated.
Orange
If activated together with LED f and LOM, indicates incorrect
flashing
phase rotation
Negative sequence overvoltage or Positive sequence
undervoltage is indicated.
Orange
If activated together with LED f and LOM, indicates incorrect
polarity of one phase
Green All voltages are in fault-free state
Green Floating 10 minutes average overvoltage (page 34)
flashing detected
Over/under voltage protections are not enabled by setpoint and no
Dark
other voltage failure is sensed
Red Frequency as sensed on terminals Ua is above threshold for 1st or
flashing 2nd stage overfrequency
Frequency as sensed on terminals Ua is under threshold for 1st or
Red
2nd stage underfrequency
Orange
Together with LED U and LOM, indicates incorrect phase rotation
flashing
Together with LED U and LOM, indicates incorrect polarity of one
Orange
phase
Green Frequency, rotation and phases polarity are in fault-free state
Over/under frequency is protections are not enabled by setpoint
Dark
and no other indicated failure is sensed
Vector shift or ROCOF protection was indicated and Fault reset
Red
was not yet done
Orange
Together with LED U and f, indicates incorrect phase rotation
flashing
Together with LED U and f, indicates incorrect polarity of one
Orange
phase
None of Vector shift or ROCOF failure is detected or neither
Dark
Vector shift nor ROCOF protections are not enabled by setpoint
Meaning
is
23