Siemens SIRIUS 3RF Series

Table of contents
SIRIUS Innovations
18 System Manual, 01/2011, A8E56203870002-03
8.9 Accessories............................................................................................................................... 729
8.9.1 Accessories............................................................................................................................... 729
8.9.2 Terminal s
upport for stand-alone assembly.............................................................................. 729
8.9.2.1 Des
cription ................................................................................................................................ 729
8.9.2.2 Mounting..............................................................................................................
...................... 730
8.9.3 Sealable
cover .......................................................................................................................... 732
8.9.3.1 Des
cription ................................................................................................................................ 732
8.9.3.2 Mounting..............................................................................................................
...................... 732
8.10 T
echnical data........................................................................................................................... 733
8.10.1
Performanc
e features of current monitoring relays................................................................... 733
8.10.1.1 General data
............................................................................................................................. 733
8.10.1.2 Monitoring func
tions .................................................................................................................. 734
8.10.1.3 Equipment
................................................................................................................................. 735
8.10.1.4 Configuration of load feeders
.................................................................................................... 736
8.10.1.5 Features
of current monitoring relays ....................................................................................... 737
8.10.1.6 Combinations with 3RT20 contac
tor ......................................................................................... 737
8.10.2 3RR21 Basic
analog setting current monitoring relay............................................................... 738
8.10.2.1 General technic
al data .............................................................................................................. 738
8.10.2.2 Main c
ircuit ................................................................................................................................ 740
8.10.2.3 Connec
tion for main circuit........................................................................................................ 741
8.10.2.4 Auxiliary
circuit .......................................................................................................................... 742
8.10.2.5 Connecting the auxiliary ci
rcuit ................................................................................................. 743
8.10.2.6 Short-c
ircuit protection .............................................................................................................. 743
8.10.3
3RR22 Standard digital setting current monitoring relay .......................................................... 744
8.10.3.1 General technic
al data .............................................................................................................. 744
8.10.3.2 Main c
ircuit ................................................................................................................................ 746
8.10.3.3 Conduc
tor cross-sections main circuit ...................................................................................... 747
8.10.3.4 Auxiliary
circuit .......................................................................................................................... 748
8.10.3.5 Conduc
tor cross sections, auxiliary circuit................................................................................ 749
8.10.3.6 Short-c
ircuit protection .............................................................................................................. 749
8.11 D
imension drawings (dimensions in mm) ................................................................................. 750
8.11.1
Dimension drawings for 3RR21 Basic analog setting current monitoring relay........................ 750
8.11.2
Dimension drawings for 3RR22 Standard digital setting current monitoring relay ................... 752
8.12 C
ircuit diagrams ........................................................................................................................ 754
A
Appendix A
............................................................................................................................................ 757
A.1
Ty
pes of coordination................................................................................................................ 757
A.2
More information
....................................................................................................................... 758
A.3
Correction
sheet........................................................................................................................ 759
G
lossary ................................................................................................................................................ 761
I
ndex...................................................................................................................................................... 775