Siemens 3UG4 - Page 185

3UG4621/3UG4622 current monitoring relays
7.7 Technical data
3UG4 / 3RR2 monitoring relays
Manual, 05/2016, NEB927043002000/RS-AC/004
185
General technical details
3UG4621-..A..
3UG4622-..A..
3UG4621-..W..
3UG4622-..W..
Product function
Current monitoring relay
Design of the display
LCD
Product function
• overcurrent recognition of 1
phase
Yes
• overcurrent recognition of 3
phases
No
• undercurrent recognition of 1
phase
Yes
• undercurrent recognition of 3
phases
No
• overcurrent recognition DC
Yes
• undercurrent recognition DC
Yes
• current window recognition DC
Yes
• tension window recognition of 1
phase
No
• tension window recognition of 3
phases
No
• reset external
Yes
• self-reset
Yes
• open-circuit or closed-circuit
current principle
Yes
Starting time
after the control
supply voltage has been applied
s 1
Response time maximum
ms
450
Relative metering precision
% 5
Precision of digital display
+/-1 digit
Relative temperature-related
measurement deviation
% 5
Temperature drift per °C
%/°C
0.1
Relative repeat accuracy
%
1