Section 8 Current protection
8.1 Instantaneous phase overcurrent protection PHPIOC (50)
IP14506-1 v6
8.1.1 Identification
M14880-1 v4
Function description IEC 61850
identification
IEC 60617
identification
ANSI/IEEE C37.2
device number
Instantaneous phase overcurrent
protection 3-phase output
PHPIOC
SYMBOL-Z V1 EN-US
50
8.1.2 Functionality
M12910-3 v12
The instantaneous three phase overcurrent function has a low transient overreach and short
tripping time to allow use as a high set short-circuit protection function.
8.1.3 Function block
M12602-3 v6
ANSI04000391-2-en.vsd
PHPIOC (50)
I3P*
BLOCK
MULTPU
TRIP
TR_A
TR_B
TR_C
ANSI04000391 V2 EN-US
Figure 245: PHPIOC (50) function block
8.1.4 Signals
IP11433-1 v2
PID-6519-INPUTSIGNALS v5
Table 204: PHPIOC (50) Input signals
Name Type Default Description
I3P GROUP
SIGNAL
- Three phase current
BLOCK BOOLEAN 0 Block of function
MULTPU BOOLEAN 0 Enable current pickup value multiplier
1MRK 502 066-UUS B Section 8
Current protection
447
Technical manual