Siemens 3UG4 User Manual page 225

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.
Image 9-1
3UG4 / 3RR2 monitoring relays
Manual, 05/2016, NEB927043002000/RS-AC/004
Remote test button
3UG458. insulation monitoring relay
9.3 3UG4581 insulation monitoring relay
225