Front view/terminal labeling 3UG4581-1AW31
Front view Description
A1+ 11
Y1 Y2 Y3
14 12 A 2-
L
R=R .1+ R.2
R.1-VA LUE kΩ
R. 2-VA LUE k Ω
1
1
3
4
5
6
7
8
9
2
Position digits
① Terminal block:
Screw-type connections are possible.
② Test/RESET button
1)
③ Status display: LED for device status (green)
④ Status display: LED for monitoring status F (red)
⑤ Status display: LED output contact status (yellow)
⑥ Label
⑦ Device article number
⑧ Rotary knob for adjusting the insulation resistance (R.2 for the units position of
R)
⑨ Rotary knob for adjusting the insulation resistance (R.1 for the tens position of
R)Setting value "0" is colored yellow.
2)
Terminal labels
A1+ Rated control supply voltage ∼ / +
A2- Rated control supply voltage ∼ / -
Y1 Control inputs; isolation control
Y1-Y3: Remote test
Y2-Y3: Remote reset/autoreset
Y2
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)
A test is only possible if there is no fault. A reset is only possible if the measured value is greater
than the set threshold including the hysteresis.
2)
Information on setting accuracy
• 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 nd additional information on the connection terminals and the permissible conductor
cross-sections in the Chapter "Technical data (Page 169)".
You can nd information on connecting in the Chapter "Circuit diagrams (Page 165)".
3UG458. insulation monitoring relay.
9.3 3UG4581 insulation monitoring relay
SIRIUS 3UG4 / 3RR2 monitoring relay
Equipment Manual, 07/2021, NEB927043002000/RS-AD/005 157
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