System overview
3.5 Overview of the functions
3UG4 / 3RR2 monitoring relays
Manual, 05/2016, NEB927043002000/RS-AC/004
37
3UG45 / 3UG46 monitoring relays
Table 3- 17 Functions of the 3UG45/3UG46 monitoring relays for analog and digital setting
Line monitoring and voltage monitoring
Monitoring for phase
sequence
Monitoring for phase
— ○
1)
✓ ✓ — ✓ ✓ ✓ ✓ ✓ — — — — — — — —
Monitoring for
— — 10 % 20 % — ✓ ○
2)
○
2)
✓ ✓ — — — — — — — —
Monitoring for
— — — 3p — 3p 3p 3p 3p 3p 1p 1p 1p — — — — —
Monitoring for
— — — — — — 3p 3p 3p 3p 1p 1p 1p — — — — —
Monitoring for N
conductor
— — — — — — — ✓ — ✓ — — — — — — — —
Automatic direction of
rotation correction in the
case of incorrect phase
— — — — — — — — ✓ ✓ — — — — — — — —
Power factor monitoring and current monitoring
Monitoring for
— — — — — — — — — — — — — 1p 1p 1p — —
Monitoring for
overcurrent
— — — — — — — — — — — — — 1p 1p 1p — —
Active current
— — — — — — — — — — — — — — — ✓ — —
Apparent current
— — — — — — — — — — — — — ✓ ✓ — — —
Fault current monitoring/insulation monitoring
Monitoring for fault
— — — — — — — — — — — — — — — — ✓ —
Monitoring for filling level
overshoot / resistance
✓ — — — — — — — — — — — — — — — — —
Monitoring for filling level
undershoot / resistance
✓ — — — — — — — — — — — — — — — — —
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