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WB-MAP measurement terminology
Selected measurement definitions applicable to WB-MAP3E. The shared source also describes harmonic-analysis models; harmonic and THD measurements apply only to models with H in their name.
| Quantity | Interface label | Unit / meaning |
|---|---|---|
| RMS phase voltage / peak voltage | Urms / Upeak | V |
| Line-to-line voltage | Uline | V; calculated from phase voltages and angles |
| RMS current / peak current | Irms / Ipeak | A |
| Active power | P | W |
| Reactive power | Q | var |
| Apparent power | S | VA |
| Non-active power | N | var |
| Power factor | PF | −1 to 1 |
| Forward / reverse active energy | AP / AN energy | kWh |
| Forward / reverse reactive energy | RP / RN energy | kvarh |
| Forward / reverse non-active energy | NP / NN energy | kvarh |
| Frequency | Frequency | Hz |
| Voltage-to-current angle | Phase angle | Degrees, within one phase |
| Interphase voltage angle | Voltage angle | Degrees, referenced to phase A/L1; L1 is 0° |
Total denotes the combined three-phase value. See the WB-MAP3E data register map for exact addresses, scaling, signedness, byte order and firmware availability. Use the model's own specifications for measurement limits.