errors. The manufacturer of the measuring devices is to be contacted for
information on the measuring errors.
If the measuring errors are not compensated for, the underpower setting
should not be lower than the sum of the current-measuring and voltage-
measuring errors.
For example, if the error of the current-measuring device is 2% and that of
the voltage-measuring device is 1%, the minimum setting is (2 + 1)% =
3%.
4.8.1.6 Signals
Table 622: 32U Input signals
Name Type Default Description
I_A SIGNAL 0 Phase A current
I_B SIGNAL 0 Phase B current
I_C SIGNAL 0 Phase C current
I1 SIGNAL 0 Positive sequence current
V_A SIGNAL 0 Phase-to-ground voltage A or phase-to-phase voltage
AB
V_B SIGNAL 0 Phase-to-ground voltage B or phase-to-phase voltage
BC
V_C SIGNAL 0 Phase-to-ground voltage C or phase-to-phase voltage
CA
V1 SIGNAL 0 Positive phase sequence voltage
BLOCK BOOLEAN 0=False Block signal for activating the blocking mode
DISABLE BOOLEAN 0=False Signal to block the function during generator startup
Table 623: 32U Output signals
Name
Type Description
TRIP BOOLEAN Trip
PICKUP BOOLEAN Pickup
4.8.1.7 Settings
Table 624: 32U Group settings (Basic)
Parameter
Values (Range) Unit Step Default Description
Pickup value 0.01...2.00 xSn 0.01 0.10 Pickup value
Trip delay time 40...300000 ms 10 40 Trip delay time
Section 4 1MAC059074-MB A
Protection functions
722 615 series ANSI
Technical Manual
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