Basler-electric BE1-11g Instrukcja Użytkownika Pobierz pdf (Strona 621)

9424200994 Rev N 609

Under/Overvoltage (27/59)

The 27 and 59 elements have independent user defined definite and inverse time delays. The inverse

time curves are defined below.

Undervoltage (27) Inverse Time Curve

The undervoltage inverse time curve is defined by Equation 34 and shown in Figure 357.

Equation 34. Undervoltage (27) Inverse Time Curve Definition

= Time to Trip

D = Time Dial

= Measured Voltage

= Voltage Pickup Setting

BE1-11g Time Curve Characteristics

Basler-electric BE1-11g Instrukcja Użytkownika Strona 621