6.4 3UG4513 line monitoring relay
6.4.1 Operator controls and connection terminals
Front view / terminal labeling 3UG4513
Front view Description
24
2122
12
14
11
L3
L2
L1
3UG4513-.....
SIRIUS
3 160-690V
Phase loss
Phase sequence
L
600
400
200
500
300
690V
16
12
20 s
8
4
0,1
L1
L2
L3
< Un
3 Un
Delay
Position digits
① Terminal block (removable)
Connection is possible using screw-type terminals or spring-loaded terminals.
② Rotary button for setting the nominal line voltage (3~U
n
)
③ Rotary button for setting the tripping delay (Delay)
④ Device article number
⑤ Label
⑥ Function symbol
⑦ Status display: LED phase failure / phase sequence (red)
⑧ Status display: LED coil symbol (green)
Terminal labels
L1, L2, L3 Rated control supply voltage
12 Output relay K1 CO contact NC contact
11 Output relay K1 CO contact root
14 Output relay K1 CO contact NO contact
22 Output relay K2 CO contact NC contact
21 Output relay K2 CO contact root
24 Output relay K2 CO contact NO contact
You can nd additional information on the connection terminals and the permissible conductor
cross-sections in the Chapter "Connection methods (Page 23)".
You can nd information on connecting in the Chapter "Circuit diagrams (Page 96)".
6.4.2 Function
General functionality
The 3UG4513 line monitoring relays monitor for phase sequence, phase failure of one of the
three phases, and undershoot of at least one line-to-line voltage of the set nominal line voltage
by 20 % in a three-phase system.
The devices are self-powered (measuring voltage = rated control supply voltage) and work on
the closed-circuit principle. The 3UG4513 line monitoring relays monitor all phases of three-
phase AC networks from 160 to 690 V through terminals L1 / L2 / L3 and also draw power from
all three phases simultaneously.
3UG4.1 line monitoring relay
6.4 3UG4513 line monitoring relay
SIRIUS 3UG4 / 3RR2 monitoring relay
92 Equipment Manual, 07/2021, NEB927043002000/RS-AD/005
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