Siemens SIRIUS 3UG4 User Manual

6.4.4 Diagnostics
6.4.4.1 Diagnostics with LED
Status display
The following information about the operating state is displayed on the 3UG4513 line
monitoring relays:
Operating status LED State of the output
relays
Coil symbol (green) Phase fail‐
ure / phase se‐
quence (red)
12/ 11/ 14
22/ 21/ 24
• Supply voltage not present
O󹪜 O󹪜
• Supply voltage present
• Correct phase sequence
• All phases available
• Line-to-line voltage OK
On O󹪜
• Supply voltage present
• Incorrect phase sequence
On 󹪞ashing
• Supply voltage present
• Phase failure
On On
• Supply voltage present
• Line-to-line voltage under‐
shot
On On
You will 󹪝nd more information about the switching behavior of the output relays in Chapter
"Function (Page 92)."
3UG4.1 line monitoring relay
6.4 3UG4513 line monitoring relay
SIRIUS 3UG4 / 3RR2 monitoring relay
Equipment Manual, 07/2021, NEB927043002000/RS-AD/005 95

Siemens SIRIUS 3UG4 Specifications

General

Brand	Siemens
Model	SIRIUS 3UG4
Category	Relays
Language	English