ABB REF 541 Product Manual page 66

66
Feeder Terminal
2
I , n< = three-phase start-up supervision for motors
s t
48, 14, 16
3 49 = three-phase thermal overload protection for devices
,>
U ,<U U > 27, 47, 59 = phase-sequence voltage protection, stages 1 and 2 available
1 2
1
DI>
51NC = current unbalance protection for shunt capacitor banks
51C,37C,
= three-phase overload protection for shunt capacitor banks
3I>, 3I<
68C
3I >
= arc protection
&
MCS = measuring circuit supervision
TCS
= trip circuit supervision
CBCM
= circuit-breaker condition monitoring
= automatic voltage regulation
U 90V
= manual voltage regulation
U
= active power measurement, indication and supervision
P
= reactive power measurement, indication and supervision
Q
= 3-phase current measurement, indication and supervision
3I
= 3-phase voltage or phase-to-phase voltage measurement, indication
3U
and supervision
= frequency measurement, indication and supervision
f
= power factor measurement, indication and supervision
pf
= residual current measurement, indication and supervision
I
0
U
= residual voltage measurement, indication and supervision
0
Fig. 19 Symbol notations, part II
REF 541, REF 543, REF 545.
1MRS750443-MBG
SYMNOT2