Application Areas - Siemens 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
Function
•
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
Monitoring for open circuit
Monitoring for incorrect settings
Control circuit monitoring
Main circuit monitoring
✓: 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
Configurable
1)
3UG4 / 3RR2 monitoring relays
Manual, 05/2016, NEB927043002000/RS-AC/004
Application areas of the insulation monitoring relays
Insulation monitor for
ungrounded systems
3UG4581
—
—
1p
1p, 3p, 3p + N
Application
Emergency power supplies
•
Safety lighting
•
Industrial production plants with high availability requirements
•
(chemical industry, automobile manufacture, printing)
Shipbuilding and railways
•
Mobile power generators (aircraft)
•
Renewable energies (wind energy and photovoltaic plants)
•
Mining industry
•
Insulation monitoring relays
3UG4582
✓
—
1p
1p, 2p, 2p + N, 3p, 3p + N
3UG458. insulation monitoring relay
9.1 Application areas
3UG4583
✓
1)
✓
1p
1p, 2p, 2p + N, 3p, 3p + N
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