Does the PM8000 modbus register list contain points for line-to-line Total Harmonic Distortion?

[Tomohiro-Okada]

Does the PM8000 modbus register list contain points for line-to-line Total Harmonic Distortion?

Within the PM8000 series meter modbus register list document there are three register present for line to neutral THD,

as shown below, but there are no equivalent registers for line-to-line values.

THD Voltage A-N 21,330
THD Voltage B-N 21,332
THD Voltage C-N 21,334

Are three any registers which present for line-to-line THD?

Regards,

Okada

[DanL]

On the default configuration of the PM8000, those three registers present line-to-line voltage THD when the meter is configured for DELTA volts mode and present line-to-neutral in all other volts mode configurations.

However, the PM8000 is incredibly flexible and users can either re-map existing modbus registers to alternate values and/or create custom modbus register mappings. The default template for PM8000 already includes three Harmonics Measurement (HME) modules preconfigured for line-to-line. The outputs of these or other HME modules can be mapped to modbus addresses with a simple configuration.

UPDATE: I just found that there are already 3 default modbus registers for 10minute line-to-line voltage THD: 40122, 40124, and 40126 (all are FLOAT32 format) in the default configuration.

[Tomohiro-Okada · Accepted solution]

Hello @DanL,

Thank you for your kind reply!

I understand about my question.

Regards,

Okada