Siemens 3UG4 - 9.3 3 UG4581 insulation monitoring relay

3UG458. insulation monitoring relay
9.3 3UG4581 insulation monitoring relay
3UG4 / 3RR2 monitoring relays
218 Manual, 05/2016, NEB927043002000/RS-AC/004
9.3
3UG4581 insulation monitoring relay
9.3.1
Operator controls and connection terminals
Front view/terminal labeling 3UG4581
Front view
Description
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
Rotary button for adjusting the insulation resistance (R.2 for the units position of R)
⑧
Rotary button for adjusting the insulation resistance (R.1 for the tens position of R)
Setting value "0" is colored yellow.
2)
⑨
Device article number
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
Measuring signal input, ground 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 find additional information on the connection terminals and the permissible
conductor cross-sections in the Chapter "Technical data (Page 233)".
You can find information on connecting in the Chapter "Circuit diagrams (Page 227)".