Grundfos MP 204 - IEC Trip Curve Charts; IEC Trip Curve Reference Chart; IEC Trip Curve Example Calculation

32
13.2 IEC trip curves
Fig. 26 IEC trip curves
Example:
• Set the MP 204 to IEC trip class 20.
• Set the overload limit to 10 A (the rated motor cur-
rent is stated on the nameplate).
At a motor current of 22.5 A (10 x 2.25), the MP 204
trips after approx. 170 seconds.
TM03 0806 0605
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5 7.0 7.5 8.0 8.5 9.0
1
5
1010
50
100100
500
10001000
5000
10000
MP 204
Class 5
Class 10
Class 20
Class 30
Class 45
Class "p"
Time [s]
x I
rated
I
rated
170
2.25 x I
rated