User Manual

3UG458. insulation monitoring relay.
10.4 3UG4582/3UG4583 insulation monitoring relays
3UG4 / 3RR2 monitoring relays
Manual, 02/2013, NEB927043002000/RS-AA/002
231
Non-volatile memory function on the 3UG4583
The 3UG4583 insulation monitoring relays also have a configurable non-volatile (retentive)
fault storage function. After shutting down and restoring the rated control and supply voltage,
the device is in the state it was in prior to shutdown, until it is reset.
If fault storage is activated using DIP switch 2 (ON), output relays K1 and K2 remain in the
fault state and do not switch back to their original position until actuation of the combined
Test/Reset button, or until activation of the remote reset (jumpering of terminals Y2/Y3) if the
measured insulation resistance is greater than the set threshold(s) including hysteresis. Fault
storage is non-volatile.
The table below shows the different options for resetting the device depending on the setting
of DIP switch 2.
DIP switch 2 OFF ON
<
<<
1) On the front (Test/Reset button)
2) Remote reset (remote button with NC
function)
3) A1+ / A2- (switching the supply voltage
off/on)
1) On the front (Test/Reset
button)
2) Remote reset (remote button
with NC function)
<
<
<
1) On the front (Test/Reset button)
2) A1+ / A2- (switching the supply voltage
off/on)
1) On the front (Test/Reset
button)
<
<
<
1) Autoreset (factory setting) —
1)
1)
If there is no external connection between terminals Y2 and Y3 while retentive fault storage is set,
internal device monitoring detects a parameterization error.
You will find the setting ranges and factory settings of the available parameters, and the
definitions of the DIP switch positions in Chapter "Operator control (Page 238)".
3UG4983-1A upstream module for extending the voltage range
The 3UG4983-1A upstream module can be used to extend the measuring range of the rated
system voltage U
n
to be monitored. The upstream module is used to connect the 3UG4583
insulation monitoring relay to systems with up to 690 V AC and 1000 V DC. The upstream
module is connected to terminals VS, V1+ and V1- of the insulation monitoring relay.
These accessories are described in Chapter "3UG4983 upstream module for the 3UG4583
monitoring relay (Page 341)".