3UG458. insulation monitoring relay
9.4 3UG4582/3UG4583 insulation monitoring relays
3UG4 / 3RR2 monitoring relays
Manual, 05/2016, NEB927043002000/RS-AC/004
251
Table 9- 7
Definitions of the DIP switch positions - 3UG4583
DIP switch
ON
OFF
Position 4
Functional principle
2 x 1 changeover contacts /
1 x 2 changeover contacts
2 x 1 changeover contacts
If functional principle 2 x 1 changeover
contacts is set, output relay K1 responds to
threshold R1 (shutdown) and output relay
K2 responds to threshold R2 (warning).
1 x 2 changeover contacts
If functional principle 1 x 2 changeover
contacts is set, both output relays K1 and
K2 respond to threshold R1 (warning). The
settings of threshold R2 have no influence
on the principle of operation.
Position 3
Open-circuit detection
Open-circuit detection activated
If open-circuit monitoring is activated, the
insulation monitoring relay monitors cables
connected to terminals L+, L-,
and KE
for interruption.
Open-circuit detection deactivated
This setting deactivates open-circuit
detection.
Position 2
Non-volatile (retentive) fault
storage
Non-volatile fault storage activated
If retentive fault storage is activated, output
relays K1 and K2 remain in the fault state
even after a failure or active shutdown of the
supply voltage, until the device is reset
using the Test/Reset button or a remote
reset is carried out (jumpering of terminals
Y2 / Y3).
Non-volatile fault storage deactivated
If the function is deactivated, output relays
K1 and K2 switch back to the good state
following failure or active shutdown of the
supply voltage if there is no longer an
insulation fault after the supply voltage
has been restored. A remote reset can
also be carried out by switching the supply
voltage. However, a voltage failure results
in the loss of a saved warning message or
alarm message.
Position 1
Functional principle of output
relays K1 and K2
Closed-circuit principle NC
Output relays K1 and K2 pick up after
application of the supply voltage and
successful self-test and system diagnostics.
If a fault occurs, the output relays drop out.
As long as there is no fault, the output
relays remain in the active state.
Open-circuit principle NO
If a fault occurs, output relays K1 and K2
pick up. As long as there is no fault, the
output relays remain in the dropped-out
state.
Chapter "Wiring examples (Page 256)" shows the examples for the different monitoring modes.
The parameters are defined in the Chapter "Parameters (Page 363)".
Tools required
The same screwdriver can be used to set the parameters as for wiring the insulation
monitoring relays.