9.4.4 Diagnostics
9.4.4.1 Diagnostics with LEDs
Status display
The following information indicates the operating state on the 3UG4582/3UG4583 insulation
monitoring relays:
Operating state LED (green) LED F (red) LED (yellow)
Startup O O
No fault O
• On the 3UG4582:
• On the 3UG4583: Dependent
on the conguration
Pre-warning
1)
Insulation fault (thresh‐
old undershot)
• On the 3UG4582: O
• On the 3UG4583: Dependent
on the conguration
PE/KE open circuit
• On the 3UG4582: O
• On the 3UG4583: Dependent
on the conguration
L+/L- open circuit at sys‐
tem start
1)
/
Test function
1)
/
Dependent on the conguration
System discharge ca‐
pacity too high/meas‐
ured result invalid
• On the 3UG4582: O
• On the 3UG4583: Dependent
on the conguration
Internal fault
• On the 3UG4582:
O
• On the 3UG4583:
Dependent on the
conguration
• On the 3UG4582: O
• On the 3UG4583: Dependent
on the conguration
Setting error
1), 2)
Test function O
• On the 3UG4582: O
• On the 3UG4583: Dependent
on the conguration
Manual RESET possible
3) 4)
1)
Only on the 3UG4583-1CW30.
2)
Possible setting error: The threshold for shutdown is set to a higher value than the warning threshold,
and non-volatile (retentive) fault storage is set simultaneously with autoreset.
3)
The device has tripped following an insulation fault. The fault has been stored and the insulation
resistance has reverted to a value above the set threshold including hysteresis.
4)
Dependent on the fault.
3UG458. insulation monitoring relay.
9.4 3UG4582/3UG4583 insulation monitoring relays
SIRIUS 3UG4 / 3RR2 monitoring relay
Equipment Manual, 07/2021, NEB927043002000/RS-AD/005 191