3UG4622-1AW30 Datasheet, PDF (73/114 Pages) List of Unclassifed Manufacturers – Monitoring and Control Devices

■ Overview
Monitoring Relays
3UG Monitoring Relays for Electrical and Additional Measurements
Current monitoring
The relays monitor single-phase AC and DC currents against the
set threshold for overshoot and undershoot. They differ with
regard to their measuring ranges and supply voltage types.
■ Function
3UG46 21/3UG46 22 monitoring relays
The 3UG46 21/3UG46 22 current monitoring relay is supplied
Current undershoot
with an auxiliary voltage of 24 V AC/DC or 24 to 240 V AC/DC
and performs overshoot, undershoot or window monitoring of
the current depending on how it is parameterized. The device is
A1-A2
equipped with a display and is parameterized using three
buttons.
<
The measuring range extends from 3 to 500 mA or 0.05 to 10 A.
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 I_Del has
elapsed. This time and the ON-delay time on_Del are adjustable
from 0.1 to 20 s.
The hysteresis is adjustable from 0.1 to 250 mA or 0.01 to 5 A.
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.
=0
11/14
11/12
onDelay
Window monitoring
With the closed-circuit principle selected
Current overshoot
A1-A2
A1-A2
>
>
<
=0
11/14
11/12
onDelay
Delay
Hysteresis
=0
11/14
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onDelay
Delay
Delay = Delay
Delay
Hysteresis
Hysteresis
Delay
Hysteresis
Siemens LV 1 T · 2006
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