3Ug4621/3Ug4622 Current Monitoring Relays; Application Areas - Siemens 3UG4 User Manual

3UG4621/3UG4622 current monitoring relays

7.1

Application areas

Application areas
The current monitoring relays are used, for example, in the following applications:
Table 7- 1
Function
•
•
•
3UG4 / 3RR2 monitoring relays
Manual, 05/2016, NEB927043002000/RS-AC/004
Application areas of the current monitoring relays
Undercurrent monitoring and overcurrent
monitoring
Monitoring the functionality of electrical loads
Wire-break monitoring
Application
Threshold switch for analog signals from
•
4 to 20 mA
Emergency lighting (failure of a lamp → drop
•
in current strength in the system)
Heating systems (electroplating plants, plastic
•
injection machines, paintshops)
Lamps (tunnels, OP lighting, traffic lights,
•
signal systems, UV lamps, infrared radiators,
laser lamps)
7
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