Siemens SIRIUS 3UG4 - Page 50

SKDVH
ORDG
SKDVH
ORDG
SKDVH
ORDG
SKDVH
ORDG
1 1 1 2
/////1//
1
1
55
55
555555
0
a
① Complete device functionality possible
② Device functionality only possible with limitations:
• Residual current monitoring not possible (→ switch o󹪜)
• Phase sequence monitoring not possible (→ switch o󹪜)
• Active current monitoring not possible (→ switch o󹪜)
Note
The monitoring functions of the 2 phases (3RR21) or the 3 phases (3RR22) are ORed to the
output relay(s), i.e. a fault in one monitored phase (e.g. current violation L1) already a󹪜ects the
output relay(s).
Accessories
The accessories have been tailored to the current monitoring relays; they can be mounted easily
and without the need for tools. The accessories are described in the Chapter "Accessories for
3RR2 current monitoring relays (Page 241)".
3RR2 current monitoring relays
4.1 Product description
SIRIUS 3UG4 / 3RR2 monitoring relay
50 Equipment Manual, 07/2021, NEB927043002000/RS-AD/005