t s
k A
B
U U
U
C
D
E
=
⋅
×
− >
>
−
+
GUID-6E9DC0FE-7457-4317-9480-8CCC6D63AB35 V2 EN (Equation 83)
t [s]
operate time in seconds
U measured voltage
U> the set value of
Start value
k the set value of
Time multiplier
Table 710: Curve coefficients for the standard overvoltage IDMT curves
Curve name A B C D E
(17) Inverse Curve A 1 1 0 0 1
(18) Inverse Curve B 480 32 0.5 0.035 2
(19) Inverse Curve C 480 32 0.5 0.035 3
Section 11 1MRS758755 A
General function block features
748 REC615 and RER615
Technical Manual
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