User Manual

3UG4624 residual current monitoring relay
8.4 Operation
3UG4 / 3RR2 monitoring relays
178 Manual, 02/2013, NEB927043002000/RS-AA/002
Display of the current residual current by rms value setting
The 3UL22 summation current transformer used with its stated residual current rating is
chosen in menu "SET" as the setting value IΔn from 0.3 to 40 A in the 8 fixed steps that are
possible. With this adaptation, it is possible to indicate the warning threshold for overshoot
(I!) and the threshold for overshoot (I▲) as an absolute value (rms value) in amps and the
currently measured value of the residual current.
The following table shows the value ranges of the settable 3UL22 summation current
transformer:
Table 8- 3 Parameter information depending on the rated residual current
3UL2201-
3UL2202-
3UL2203-
IΔn Display area I▲ I! HysteresisI▲ Hysteresis I!
(5 % of IΔn)
-1A 0.3 A 0 mA, 30 to 360 mA 30 to 300 mA Off,
30 mA to 300
mA
1 to 150 mA 15 mA
-2A 0.5 A 0 mA, 50 to 600 mA 50 to 500 mA Off,
50 to 500 mA
1 to 250 mA 25 mA
-3A 1 A 0 A, 0.10 to 1.20 A 0.10 to 1.00 A Off,
0.10 to 1.00 A
0.01 to 0.50 A 0.05 A
-1B 6 A 0 A, 0.6 to 7.2 A 0.6 to 6.0 A Off, 0.6 to 6.0
A
0.1 to 3.0 A 0.3 A
-2B 10 A 0 A, 1.0 to 12.0 A 1.0 to 10.0 A Off, 1.0 to 10.0
A
0.1 to 5.0 A 0.5 A
-3B 16 A 0 A, 1.6 to 19.2 A 1.6 to 16.0 A Off, 1.6 to 16.0
A
0.1 to 8.0 A 0.8 A
-4B 25 A 0 A, 2.5 to 30.0 A 2.5 to 25.0 A Off, 2.5 to 25.0
A
0.1 to 12.5 A 1.2 A
-5B 40 A 0 A, 4.0 to 48.0 A 4.0 to 40.0 A Off, 4.0 to 40.0
A
0.1 to 20.0 A 2.0 A
Note
Setting OFF disables the parameter warning threshold for overshoot.
The parameters are described in Chapter "Parameters (Page 351)."
Menu-based operation is described in Chapter "Menu-based operation (Page 36)."