Eaton EDR-5000 - Page 668

EDR-5000 IM02602007E
www.eaton.com 668
Frequency Calculation
f
VA
VC VB
f
df/dt Calculation
Name.Pickup 81
81R-Rate of Change
df/dt Mode
+df/dt Idf/dtI
-df/dt
81[1]...[n]: 81UR- Under & df/dt Or 81OR- Over & df/dt Name =
81[1]...[n]
Please Refer to Diagram: Blockings
Please Refer to Diagram: Trip Blockings
(Element is not deactivated and no active blocking signals)
(Tripping command deactivated or blocked. )
f
Positive df/dt
Negative df/dt Absolute df/dt
Name.Pickup
Name.Blo by V<
Name.Trip
Name.Pickup df/dt | DF/DT
2 3
Name.TripCmd
14
81OR- Over & df/dt
Name.Mode
Device Planning
81UR-Under & df/dt
81O-Over 81U-Under
AND
AND
AND
<15%Vn <15%Vn <15%Vn
Name.t
t
0
15
15a