Section 6 Current protection
6.1 Instantaneous phase overcurrent protection 3-phase
output PHPIOC
6.1.1 Identification
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
50
6.1.2 Functionality
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.
6.1.3 Function block
IEC08000001 V1 EN
Figure 29: PHPIOC function block
6.1.4 Signals
Table 24: PHPIOC Input signals
Name
Type Default Description
I3P GROUP
SIGNAL
- Three phase group signal for current inputs
BLOCK BOOLEAN 0 Block of function
Table 25: PHPIOC Output signals
Name
Type Description
TRIP BOOLEAN General trip signal
1MRK 511 287-UEN A Section 6
Current protection
79
Technical manual