Siemens SIRIUS 3UG4 Equipment Manual page 158

3UG458. insulation monitoring relay.
9.3 3UG4581 insulation monitoring relay
Front view/terminal labeling 3UG4581-2AW31
Front view
A1+ 11
Y1 Y2 Y3
R=R.1+R.2
R.1-VALUE kΩ
9
R.2-VALUE kΩ
8
7
6
L
14 12 A2-
A test is only possible if there is no fault. A reset is only possible if the measured value is greater
1)
than the set threshold including the hysteresis.
Information on setting accuracy
2)
• at setting value "0", a setting accuracy of >15 % applies for R
• at setting value ">1", a setting accuracy of 6 % applies for R
You can find additional information on the connection terminals and the permissible conductor
cross-sections in the Chapter "Technical data (Page 169)".
You can find information on connecting in the Chapter "Circuit diagrams (Page 165)".
158
Description
Position digits
①
Terminal block:
1
Supports spring-loaded connection technology.
②
Test/RESET button
③
Status display: LED for device status (green)
④
Status display: LED for monitoring status F (red)
2
⑤
Status display: LED output contact status (yellow)
⑥
Label
3
⑦
Device article number
4
⑧
Rotary knob for adjusting the insulation resistance (R.2 for the units position of
5
R)
⑨
Rotary knob for adjusting the insulation resistance (R.1 for the tens position of
R)Setting value "0" is colored yellow.
Terminal labels
A1+ Rated control supply voltage ∼ / +
1
A2- Rated control supply voltage ∼ / -
Y1 Control inputs; isolation control
Y1-Y3: Remote test
Y2
Y2-Y3: Remote reset/autoreset
Y3
L Measuring signal input, connection to phase or N conductor
Measured signal input, grounding connection
12 Output relay K1 CO contact NC contact
11 Output relay K1 CO contact root
14 Output relay K1 CO contact NO contact
1)
2)
Equipment Manual, 07/2021, NEB927043002000/RS-AD/005
SIRIUS 3UG4 / 3RR2 monitoring relay