SIEMENS
5/50
Siemens IK PI · 2015
IO-Link
SIRIUS 3UG48 monitoring relays for stand-alone installation for IO-Link
Residual current monitoring
Residual-current monitoring relays
5
■
Overview
SIRIUS 3UG4825 monitoring relay
The 3UG4825 residual-current monitoring relays are used in
conjunction with the 3UL23 residual current transformers for
monitoring plants in which higher residual currents are increas-
ingly expected due to environmental conditions. Monitoring
encompasses pure AC residual currents or AC residual currents
with a pulsating DC fault current component (transformer type A
in accordance with DIN VDE 0100-530/IEC TR 60755).
■
Benefits
•
High measuring accuracy ± 7.5%
•
Permanent self-monitoring
•
Parameterization of the devices locally or via IO-Link possible
•
Variable threshold values for warning and disconnection
•
Freely configurable delay times and RESET response
•
Display and transmission of actual value and status messages
to controller
•
High level of flexibility and space saving through installation of
the transformer inside or outside the control cabinet
•
Width 22.5 m
•
All versions with removable terminals
•
All versions with screw or spring-type terminals
■
Application
Monitoring of plants in which residual currents can occur,
e.g. due to dust deposits or moisture, porous cables and leads,
or capacitive residual currents
■
Selection and ordering data
•
For monitoring residual currents from 0.03 to 40 A,
from 16 to 400 Hz
•
For 3UL23 residual-current transformers with feed-through
opening from 35 to 210 mm
•
Permanent self-monitoring
•
Certified in accordance with IEC 60947, functionality corre-
sponds to IEC 62020
•
Digitally adjustable, with illuminated LCD
•
Permanent display of actual value and tripping state
•
Separately adjustable limit value and warning threshold
•
1 changeover contact each for warning threshold and tripping
threshold
For accessories see page 5/53.
3UL23 residual-current transformers and accessories for 3UL23
see page 5/51.
Measurable
current
Adjustable
response value
current
Switching
hysteresis
Adjustable
response delay
time
Control supply
voltage
Screw
terminals
Spring-type
terminals
At DC,
rated value
A
A
%
s
V
Article No.
Article No.
0.01 ... 43
0.03 ... 40
0 ... 50
0 ... 999.9
24
3UG4825-1CA40
3UG4825-2CA40
3UG4825-1CA40
3UG4825-2CA40
© Siemens AG 2014