Siemens 3UG4 User Manual page 221

Reset response and memory function
The device features an autoreset that resets output relay K1 to its original state after an fault
message and rectification of the fault that has occurred. As well as autoreset, the devices
can also be set to manual RESET by means of external switching.
The output relay (on 3UG4583: both output relays) remains dropped out if manual RESET is
active, and it only picks up again after actuation of the combined test/reset button, or
following activation of remote reset (terminals Y2-Y3) if the insulation resistance is greater
than the set threshold including hysteresis. Another method of resetting the device is by
switching the supply voltage off and on again, provided the fault is not stored in retentive
(non-volatile) memory.
Connection Y2-Y3
3UG4 / 3RR2 monitoring relays
Manual, 05/2016, NEB927043002000/RS-AC/004
Reset options
1) On the front (Test/Reset button)
2) Remote reset (remote button with NC function)
3) A1+ / A2- (switching the supply voltage off/on)
1) On the front (Test/Reset button)
2) A1+ / A2- (switching the supply voltage off/on)
1) Autoreset (factory setting)
3UG458. insulation monitoring relay
9.3 3UG4581 insulation monitoring relay
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