3Ug4641 Cos Phi And Active Current Monitoring Relay; Application Areas - Siemens 3UG4 User Manual

3UG4641 cos phi and active current monitoring relay

11.1

Application areas

Application areas
The cos phi and active current monitoring relays are used, for example, in the following
application areas:
Table 11- 1
Function
•
•
•
•
•
3UG4 / 3RR2 monitoring relays
Manual, 05/2016, NEB927043002000/RS-AC/004
Application areas of the cos phi and active current monitoring relays
No-load monitoring and load shedding
Underload monitoring in the low-end
performance range
Monitoring for overload
Simple cos phi monitoring in power systems
for controlling compensation systems
Cable break between the control cabinet
and the motor
Application
Fans (in the case of a broken fan belt, for
•
example)
Pumps (in the case of an idling pump, for
•
example)
Filter system (a contaminated filter system, for
•
example)
Reactive power compensation
•
Sawing system
•
Conveyor belt
•
Surface grinding machine
•
Breaking mill
•
Milling machine
•
Car wash
•
Lifting platform
•
Screw conveyor
•
Crane
•
Turning machine
•
Infrared heating system
•
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