Overview
The “Phase preference logic (PPLPHIZ)” function is intended to be used in isolated or high impedance earthed networks where there is a requirement to operate on only one of the faulty lines during a cross-country fault. It can be used without preference to restrain operation for single earth faults with a delayed zero-sequence current release.
For more detailed information on “Phase preference logic (PPLPHIZ)” function, refer to ABB, Relion 670 Series manuals.
To see other supported functions, click here.
Function Identification
| Function description | IEC 61850 identification |
IEC 60617 identification |
ANSI/IEEE C37.2 device number |
| Phase preference logic | PPLPHIZ | – | – |
Signals & Setting Parameters
PPLPHIZ function block
PPLPHIZ Input signals
| PPLPHIZ Input signals | |||
| Name | Type | Default | Description |
| I3P | GROUP SIGNAL | – | Group signal for current input |
| U3P | GROUP SIGNAL | – | Group signal for voltage input |
| BLOCK | BOOLEAN | 0 | Block of function |
| RELL1N | BOOLEAN | 0 | Release condition for the L1 to earth loop |
| RELL2N | BOOLEAN | 0 | Release condition for the L2 to earth loop |
| RELL3N | BOOLEAN | 0 | Release condition for the L3 to earth loop |
| STCND | INTEGER | 0 | Integer coded external release signals |
PPLPHIZ Output signals
| PPLPHIZ Output signals | |||
| Name | Type | Description | |
| START | BOOLEAN | Indicates start for earth fault(s), regardless of direction | |
| ZREL | INTEGER | Integer coded output release signal | |
PPLPHIZ Group settings (basic)
| PPLPHIZ Group settings (basic) | |||||
| Name | Values (Range) | Unit | Step | Default | Description |
| OperMode | No Filter NoPref 1231c 1321c 123a 132a 213a 231a 312a 321a |
– | – | No Filter | Operating mode (c=cyclic,a=acyclic) |
| UPN< | 0 – 100 | %UB/sq 3 | 1 | 70 | Operate value of phase undervoltage in % of UBase/sqrt(3) |
| UPP< | 0 – 100 | %UB | 1 | 50 | Operate value of line to line undervoltage (% of UBase) |
| 3U0> | 5 – 300 | %UB/sq 3 | 1 | 20 | Operate value of residual voltage in % of UBase/sqrt(3) |
| IN> | 10 – 200 | %IB | 1 | 20 | Operate value of residual current (% of IBase) |
| tUN | 0.000 – 60.000 | s | 0.001 | 0.100 | Pickup-delay for residual voltage |
| tOffUN | 0.000 – 60.000 | s | 0.001 | 0.100 | Dropoff-delay for residual voltage |
| tIN | 0.000 – 60.000 | s | 0.001 | 0.150 | Pickup-delay for residual current |
PPLPHIZ Non group settings (basic)
| PPLPHIZ Non group settings (basic) | |||||
| Name | Values (Range) | Unit | Step | Default | Description |
| GlobalBaseSel | 1 – 12 | – | 1 | 1 | Selection of one of the Global Base Value groups |
Logics & highlights
Phase preference logic overview
Residual current criteria
Phase selection
Start
No Filter mode
No Preference mode
Phase preference 1
Phase preference 2
Output
