User Manual

3UG458. insulation monitoring relay.
10.3 3UG4581 insulation monitoring relay
3UG4 / 3RR2 monitoring relays
214 Manual, 02/2013, NEB927043002000/RS-AA/002
10.3.3 Operator control
Parameters
The following parameters can be set on the two ten-level rotary buttons (absolute scale) with
the help of a screwdriver:
Table 10- 4 Parameter information, 3UG4581 insulation monitoring relay
Setting range
Parameters Control
elements
1)
Minimum value Maximum value
Increment
Threshold for undershoot (tens
position of R) (R.1-value)
2)
8 0 kΩ 90 kΩ 10 kΩ
increments
Threshold for undershoot (R.2-
value)
3)
7 1 kΩ 10 kΩ 1 kΩ
increments
Reset response 2 Deactivated Activated --
1)
The position digits refer to the front view in Chapter "Operator controls and connection
terminals (Page 209)".
2)
By operating the rotary button, the tens position of the threshold for undershoot can be
selected.
3)
By operating the rotary button, the units position of the threshold for undershoot can be
selected
The threshold is derived from the sum of the two set values. If, for example, threshold R.1-
value is set to 70 and threshold R.2-value is set to 8, threshold R1 corresponds to 78 kΩ.
Chapter "Internal circuit diagrams (Page 216)" shows examples for the different monitoring
modes.
The parameters are defined in the Chapt
er "Parameters (Page 351)".
Tools required
The same screwdriver can be used to set the parameters as for wiring the insulation
monitoring relays.