User Manual

3UG458. insulation monitoring relay.
10.4 3UG4582/3UG4583 insulation monitoring relays
3UG4 / 3RR2 monitoring relays
240 Manual, 02/2013, NEB927043002000/RS-AA/002
Table 10- 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 244)" shows examples for the different monitoring modes.
The parameters are defined in the Chapter "Parameters (Page 351)".
Tools required
The same screwdriver can be used to set the parameters as for wiring the insulation
monitoring relays.