3UG4622-1AW30 Datasheet, PDF (69/114 Pages) List of Unclassifed Manufacturers – Monitoring and Control Devices

■ Overview
Monitoring Relays
3UG Monitoring Relays for Electrical and Additional Measurements
Voltage monitoring
The relays monitor single-phase AC and DC voltages against the
set threshold for overshoot and undershoot. The products differ
with regard to their power supply (internal or external).
■ Function
3UG46 33 monitoring relays
The 3UG46 33 voltage monitoring relay has an internal power
supply and performs overshoot, undershoot or window
monitoring of the voltage depending on how it is parameterized.
The device is equipped with a display and is parameterized
using three buttons.
The operating and measuring range extends from 17 V to 275 V
AC/DC. The threshold values for overshoot or undershoot can be
freely configured within this range. If one of these threshold
values is reached, the output relay responds according to the
set principle of operation as soon as the tripping delay time has
elapsed. This delay time U_Del can be set from 0.1 to 20 s like the
ON-delay time on_Del.
The hysteresis is adjustable from 0.1 to 150 V. The device can be
operated on the basis of either the open-circuit or closed-circuit
principle and with manual or auto RESET. One output
changeover contact is available as signaling contact.
With the closed-circuit principle selected
Overvoltage
A1-A2 =
>
=0
11/14
11/12
onDelay
Hysteresis
Delay
Undervoltage
A1-A2 =
=0
11/14
11/12
onDelay
Window monitoring
<
Hysteresis
Delay
A1-A2 =
>
<
=0
11/14
11/12
onDelay
Delay
Hysteresis
Hysteresis
Delay = Delay
Delay
Siemens LV 1 T · 2006
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