Siemens SIRIUS 3UG4 User Manual

9.3.3 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 9-4 Parameter information, 3UG4581 insulation monitoring relay
Parameters Control ele‐
ments
1)
Setting range Increment
Minimum value Maximum value
Threshold for undershoot (tens posi‐
tion of R) (R.1-value)
2)
8 0 kΩ 90 kΩ 10 kΩ incre‐
ments
Threshold for undershoot (R.2-val‐
ue)
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 156)".
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 165)" shows examples for the di󹪜erent monitoring
modes.
The parameters are de󹪝ned in the Chapter "Parameters (Page 281)".
Tools required
The same screwdriver can be used to set the parameters as for wiring the insulation monitoring
relays.
Carrying out the self-test
The test function is only possible if there is no fault.
By operating the combined test/reset button, the insulation monitoring relay goes through an
internal test that checks the proper functioning of the operational device.
The output relays do not pick up or they switch to the fault status while the Test/Reset button is
pressed, while control contact Y1-Y3 is closed, or while the test functions execute after
application of the supply voltage. The test function can be started again at any time via the Test/
Reset button on the front or via a remote test button. The graphic below shows the connection
of the button for the remote test.
3UG458. insulation monitoring relay.
9.3 3UG4581 insulation monitoring relay
SIRIUS 3UG4 / 3RR2 monitoring relay
Equipment Manual, 07/2021, NEB927043002000/RS-AD/005 163

Siemens SIRIUS 3UG4 Specifications

General

Brand	Siemens
Model	SIRIUS 3UG4
Category	Relays
Language	English