User Manual

3UG458. insulation monitoring relay.
10.3 3UG4581 insulation monitoring relay
3UG4 / 3RR2 monitoring relays
Manual, 02/2013, NEB927043002000/RS-AA/002
209
10.3 3UG4581 insulation monitoring relay
10.3.1 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)
⑨
Device order number
Terminal labels
A1+ Rated control and supply voltage ∼ / +
A2- Rated control and supply voltage ∼ / -&&&
Y1
Y2
Y3
Control inputs; isolation control
Y1-Y3: Remote test
Y2-Y3: Remote reset/autoreset
L Measuring signal input, connection to phase or N conductor
Measuring signal input, ground connection
12 Output relay K1 changeover contact NC contact
11 Output relay K1 changeover contact root










$:
8*
7HVW
5HVHW
N
/
5YDOXH

$
N5YDOXH
5 55
$
< < <


)
14 Output relay K1 changeover 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.
You will find additional information on the connection terminals and the permissible
conductor cross-sections in Chapter "Technical data (Page 222)".
You will find information on connecting in Chapter "Circuit diagrams (Page 216
)".