9424200996 82-31
BE1-11m Time Curve Characteristics
Overvoltage (59) Inverse Time Curve
The undervoltage inverse time curve is defined by Equation 82-10. The undervoltage inverse time curve
with default constants is shown in Figure 82-25.
=
+
Equation 82-10
=
|
1|
Equation 82-11
T
T
= Time to trip when M ≥ 1
T
R
= Time to reset if BE1-11m is set for integrating reset when M < 1. Otherwise, reset is
50 milliseconds or less
D = Time Dial setting (0.0 to 9.9)
M = Multiple of Pickup setting
A, B, C, N = Constants for the particular curve
R = Constant defining the reset time.
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