GEN_METER_3PH
Three-phase PT/CT metering with an explicit line-to-line / line-to-neutral selector and signed kW, kvar and power factor.
When to use it
Use GEN_METER_3PH when a generator, incomer or feeder is metered from PTs and CTs and the paralleling scheme needs real and reactive power with their direction — for load sharing, kVAr sharing, reverse-power annunciation or energy accounting.
Interface
The published port signature. This is the whole of what the block exposes to your program — the implementation body is not shown here and ships with the download.
Inputs
| Port | Type | Unit |
|---|---|---|
| PARAMS | STRING | — |
| VA_SEC | REAL | V |
| VB_SEC | REAL | V |
| VC_SEC | REAL | V |
| IA_SEC | REAL | A |
| IB_SEC | REAL | A |
| IC_SEC | REAL | A |
| PHI_A_DEG | REAL | deg |
| PHI_B_DEG | REAL | deg |
| PHI_C_DEG | REAL | deg |
| FREQ_HZ | REAL | Hz |
| PT_RATIO | REAL | V/V |
| CT_RATIO | REAL | A/A |
| VT_LINE_TO_LINE | BOOL | — |
| PHI_REF_LINE_TO_LINE | BOOL | — |
| I_CUTOFF_A | REAL | A |
| FREQ_NOM | REAL | Hz |
| METER_OK | BOOL | — |
| ACK | BOOL | — |
Outputs
| Port | Type | Unit |
|---|---|---|
| V_LL | REAL | V |
| V_LN | REAL | V |
| I_AVG | REAL | A |
| KW | REAL | kW |
| KVAR | REAL | kvar |
| KVA | REAL | kVA |
| PF | REAL | ratio |
| FREQ | REAL | Hz |
| ANG | REAL | deg |
| VALID | BOOL | — |
| ALM_METER_FAULT | BOOL | — |
| ALM_CFG_ERR | BOOL | — |
IEC 61499 event interface
EI INIT, REQ·EO INITO, CNF
Validation evidence
- Tests
- 10
- Simulated scans
- 62
- Simulator
- v0.1.0
Complete IEC 61131-3 implementation with a published test suite that runs on the vplant simulator. The counts above are that suite, executed on this build.
- Conforms to IEC 61131-3
- Conforms to IEC 61499
Download GEN_METER_3PH — free
Create a free Ri Tech account to download the block. You get the Structured Text body, the Rockwell Add-On Instruction (.L5X), the Schneider Control Expert DFB (.XDB), PLCopen XML, the IEC 61499 function block type (.fbt) and the datasheet.
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Source is never published on this page. The implementation is released to a signed-in Ri Tech account — free of charge, but never anonymously.