Siemens 3UG4 - Page 61

3RR2 current monitoring relays
4.4 3RR21 current monitoring relays
3UG4 / 3RR2 monitoring relays
Manual, 05/2016, NEB927043002000/RS-AC/004
61
3RR2141-.....
3RR2142-.....
3RR2143-.....
Reference code
• according to DIN 40719
extended according to
IEC 204-2 according to
IEC 750
K
• according to DIN EN
61346-2
K
Mechanical operating cycles as
operating time
typical
10 000 000
Electrical operating cycles as
operating time
at AC-15
at
230 V typical
100 000
Adjustable response delay time
• when starting
s
0 … 60
• with lower or upper limit
violation
s
0 … 30
Standby time
for restart after
fault
s 0.3
Phase number
3
Number of monitored phases
2
Product function
• overcurrent monitoring
Yes
• undercurrent monitoring
Yes
• overcurrent and undercurrent
monitoring
Yes
• apparent current monitoring
Yes
• active current monitoring
No
• undercurrent recognition of
3 phases
No
• phase sequence recognition
No
• can be activated or
deactivated phase sequence
recognition
No
• self-reset
Yes
• reset external
No
• manual RESET
Yes