Siemens SIRIUS 3UG4 Equipment Manual page 208

3UG463. voltage monitoring relay
10.3 3UG4633 voltage monitoring relay
The 3UG4633 voltage monitoring relays have a display and are parameterized with three keys.
You will find the setting ranges and factory settings of the available parameters in Chapter
"Operation (Page 210)."
You will find a description of the individual parameters in Chapter "Parameters (Page 281)."
Monitoring
Output relay K1 responds in accordance with the set relay switching behavior (closed-circuit
principle NC or open-circuit principle NO).
An output change-over contact is available as a signaling contact.
If the voltage is switched on, the display will show the current measured value and a symbol for
monitoring for voltage overshoot, voltage undershoot, or range monitoring.
Startup delay
To be able to start a drive, the output relay switches to the correct state during the ON-delay time
(onDel) depending on the selected open-circuit principle or closed-circuit principle, even if the
measured value is still under the set value.
Tripping delay
If the measured value overshoots or undershoots the set threshold after expiry of the ON-delay
time (onDel), the set tripping delay time (Del) and the relay symbol will flash. After expiry of this
time, the output relays change the switching state. On the display, the current measuring value
and the symbol for undershoot or overshoot flash.
You will find the switching states of the output relay below in the section entitled "Function
diagrams" and in Chapter "Diagnostics (Page 212)."
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SIRIUS 3UG4 / 3RR2 monitoring relay
Equipment Manual, 07/2021, NEB927043002000/RS-AD/005