Siemens SIRIUS 3UG4 Equipment Manual page 66

3RR2 current monitoring relays
4.5 3RR22 current monitoring relays
Menu Parameters
level
"SET" Load current monitor‐
ing (apparent cur‐
rent I /active current I
s
"SET" Relay switching behav‐
ior (closed-circuit prin‐
ciple NC / open-circuit
principle NO)
3RR2241 current monitoring relay
1)
3RR2242 current monitoring relay
2)
3RR2243 current monitoring relay
3)
Note
The "current overshoot" or "current undershoot" monitoring mode is defined with the setting
OFF for the upper and lower threshold.
Note
Deactivating monitoring
If the upper and lower threshold values are deactivated (OFF), monitoring will cease for:
• Current overshoot
• Current undershoot
• Blocking current
The following parameters continue to be monitored:
• Fault current (if activated)
• Incorrect phase sequence (if activated)
• Phase failure
The up-to-date measured value is displayed permanently.
The parameters are described in the Chapter "Parameters (Page 281)".
Menu-based operation is described in the Chapter "Menu-based operation (Page 44)".
66
Setting range
Minimum value Maximum value
I or I
s p
)
p
NC or NO
Increment
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--
SIRIUS 3UG4 / 3RR2 monitoring relay
Equipment Manual, 07/2021, NEB927043002000/RS-AD/005
Factory setting
I
s
NC