Diagnostics; Diagnostics With Leds - Siemens SIRIUS 3UG4 Equipment Manual

3UG458. insulation monitoring relay.
9.3 3UG4581 insulation monitoring relay
Figure 9-1
9.3.4

Diagnostics

9.3.4.1

Diagnostics with LEDs

Status display
The following information indicates the operating state on the 3UG4581 insulation monitoring
relays:
Operating state
Self-test (after U
No fault
Insulation fault (thresh‐
old undershot)
System leakage capaci‐
tance too high at device
startup
Measuring result invalid
Internal fault
Test function active
Manual RESET possible
The device has tripped following an insulation fault. The fault has been stored and the insulation
1)
resistance has reverted to a value above the set threshold including hysteresis.
Dependent on the fault.
2)
The switching behavior of the output relay is shown in Chapter "Functions (Page 159)".
164
Remote test button
LED (green)
= on)
S
Off
1)
LED F (red)
Off
Off
Off
2)
SIRIUS 3UG4 / 3RR2 monitoring relay
Equipment Manual, 07/2021, NEB927043002000/RS-AD/005
LED (yellow)
Off
Off
Off
Off
Off
Off