Description
The 3UG4983‑2AA01 passive voltage reducer module is used for extending the measuring
range of the 3UG4583 insulation monitoring relays. The voltage reducer module enables
monitoring of the insulation resistance in systems with rated line voltages of up to 690 V
AC (15 to 400 Hz) and 1000 V DC in accordance with IEC 61557‑8. The device does not require
any rated control supply voltage for operation, and it is connected between the 3UG4583
insulation monitoring relay and the system to be monitored.
Note
If the continuously present voltage is greater than 600 V, a minimum gap of 10 mm must be
maintained between the neighboring devices.
Front view/terminal labeling 3UG4983-2AA01
Front view Description
VL+
VL-
L+ V1+ L- V1-
VEVS V
MA INS CONNECTION
1
1
4
3
2
Position digits
① Terminal block:
Supports spring-loaded connection technology.
② Circuit diagram
③ Device article number
④ Label
Terminal labels
VL+ Measuring signal input, connection to the system
VL- Measuring signal input, connection to the system
VS Connection to 3UG4583 terminal VS
VE Connection to 3UG4583 terminal
V Measuring signal input, ground connection
L+ Connection to 3UG4583 terminal L+
L- Connection to 3UG4583 terminal L-
V1+ Connection to 3UG4583 terminal V1+
V1- Connection to 3UG4583 terminal V1-
Accessories
13.4 Accessories for 3UG4583-1CW31 insulation monitoring relays
SIRIUS 3UG4 / 3RR2 monitoring relay
Equipment Manual, 07/2021, NEB927043002000/RS-AD/005 273
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