Table of contents
3UG4 / 3RR2 monitoring relays
Manual, 05/2016, NEB927043002000/RS-AC/004
9
10.6
Circuit diagrams .............................................................................................................. 281
10.6.1
Internal circuit diagrams................................................................................................... 281
10.6.2
Wiring examples .............................................................................................................. 282
10.7
Technical data ................................................................................................................. 283
11
3UG4641 cos phi and active current monitoring relay .................................................................... 289
11.1
Application areas ............................................................................................................. 289
11.2
Operator controls and connection terminals ..................................................................... 290
11.3
Functions ........................................................................................................................ 291
11.4
Operation ........................................................................................................................ 296
11.5
Diagnostics ..................................................................................................................... 297
11.5.1
Indications on the display ................................................................................................ 297
11.5.2
Reset .............................................................................................................................. 298
11.6
Circuit diagrams .............................................................................................................. 299
11.6.1
Internal circuit diagrams................................................................................................... 299
11.6.2
Wiring examples .............................................................................................................. 300
11.7
Technical data ................................................................................................................. 302
12
3UG4651 speed monitoring relay ................................................................................................ 307
12.1
Application areas ............................................................................................................. 307
12.2
Operator controls and connection terminals ..................................................................... 308
12.3
Functions ........................................................................................................................ 309
12.4
Operation ........................................................................................................................ 312
12.5
Diagnostics ..................................................................................................................... 313
12.5.1
Indications on the display ................................................................................................ 313
12.5.2
Reset .............................................................................................................................. 314
12.6
Circuit diagrams .............................................................................................................. 315
12.6.1
Internal circuit diagrams................................................................................................... 315
12.6.2
Wiring examples .............................................................................................................. 316
12.7
Technical data ................................................................................................................. 317
13
Accessories .............................................................................................................................. 323
13.1
Accessories for 3RR2 current monitoring relays ............................................................... 323
13.1.1
Sealable cover ................................................................................................................ 323
13.1.2
Terminal support for stand-alone assembly...................................................................... 324
13.2
Accessories for 3UG4 monitoring relays .......................................................................... 327
13.2.1
Sealable cover ................................................................................................................ 327
13.2.2
Push-in lugs .................................................................................................................... 328
13.2.3
Probes for the 3UG4501 monitoring relay ........................................................................ 329
13.2.4
Summation current transformer for the 3UG4624 monitoring relay ................................... 332
13.2.5
3UL23 residual current transformers for 3UG4625 monitoring relays................................ 333
13.2.5.1
General information ......................................................................................................... 333
13.2.5.2
Installation specifications ................................................................................................. 335
13.2.5.3
Potential for optimization ................................................................................................. 339
13.2.5.4
Installation faults.............................................................................................................. 341