Siemens 3UG4 - 9.1 Application areas

3UG458. insulation monitoring relay
9.1 Application areas
3UG4 / 3RR2 monitoring relays
Manual, 05/2016, NEB927043002000/RS-AC/004
215
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
(chemical 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 operati
on 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)
Configurable