ABB Relion 670 series - Page 590

Imeasured
IBase * IPickup
Pickup hysteresis
THETA
100
PICKUP
TRIP
ReclsLevTheta
tReset
t
t
t
ANSI12000014-1-en.vsd
ANSI12000014 V1 EN-US
Figure 313: Operating principles of the stator overload function
Tripping logic
This tripping logic provides some additional features regarding blocking and tripping options
available within the function. The list below describes functionality of every binary input and
output from the function which influence the trip logic.
Available binary inputs:
Section 8 1MRK 502 066-UUS B
Current protection
584
Technical manual