Siemens SIRIUS 3UG4 User Manual

9.1 Application areas
Application areas
The 3UG458. insulation monitoring relays are used in the following applications, for example:
Table 9-1 Application areas of the insulation monitoring relays
Function Application
• Insulation monitor for
ungrounded systems
• Emergency power supplies
• Safety lighting
• Industrial production plants with high availability requirements (chemi‐
cal industry, automobile manufacture, printing)
• Shipbuilding and railways
• Mobile power generators (aircraft)
• Renewable energies (wind energy and photovoltaic plants)
• Mining industry
Note
The 3UG4582 and 3UG4583 insulation monitors are only suitable for use in systems with
frequency converters (primary or secondary side) if operation with generated frequencies <
15Hz and > 400Hz is ruled out.
The 3UG4581 version is not suitable for operation with a frequency converter.
Table 9-2 Functions of the 3UG4581/3UG4582/3UG4583 insulation monitoring relays
Function Insulation monitoring relays
3UG4581 3UG4582 3UG4583
Insulation monitoring
Monitoring for open circuit — ✓ ✓
1)
Monitoring for incorrect settings — — ✓
Control circuit monitoring 1p 1p 1p
Main circuit monitoring 1p, 3p, 3p + N 1p, 2p, 2p + N, 3p,
3p + N
1p, 2p, 2p + N, 3p,
3p + N
✓: Function available
1p: Monitoring is 1-phase
2p: Monitoring is 2-phase
2p + N: Monitoring is 2-phase + N conductor
3p: Monitoring is 3-phase
3p + N: Monitoring is 3-phase + N conductor
— : Function not available
1)
Con󹪝gurable
3UG458. insulation monitoring relay.
9.1 Application areas
SIRIUS 3UG4 / 3RR2 monitoring relay
Equipment Manual, 07/2021, NEB927043002000/RS-AD/005 153

Siemens SIRIUS 3UG4 Specifications

General

Brand	Siemens
Model	SIRIUS 3UG4
Category	Relays
Language	English