gefran GPC Configuration And Programming Manual page 62

Functional diagram of HB alarm three-phase load
Filtered CT ammeter
Filtered CT ammeter
Filtered CT ammeter
Note
The Hb.tr threshold value of the HB alarm is calculated in two different ways, depending on the chosen operating mode:
• with ZC, BF, HSC operating modes:
• with PA operating mode:
Alarm threshold
HB.tr_1
input value with
output 1 activated
I.on_1
Filtered VT
voltmeter input
value
I.VF_1
Alarm threshold
HB.tr_2
input value with
output 2 activated
I.on_2
Filtered VT
voltmeter input
value
I.VF_2
Alarm threshold
HB.tr_3
input value with
output 3 activated
I.on_3
Filtered VT
voltmeter input
value
I.VF_3
81901 "MSW_GPC-40/600A"_03-2021_ENG_page 60
HB alarm
function
Hb.F
and
HB alarm
activation time
Hb.t
Hb.tr = A.Hb
Hb.tr = A.Hb * (Ou.P)
HB alarm status
phase 1
HB alarm status
phase 2
HB alarm status
phase 3