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Harmonic Voltage ION 7500 / ION 7600 User’s Guide
Page 318 Power Quality: ION Meters and EN50160 Technical Note
* This data is recorded by Data Recorder module 29 once a week.
Optionally, the following data is recorded once every 10 minutes by Data Recorder
modules 37 and 38.
V1-Hrm N1/N
Arithmetic
N1/N ratio
V1-Hrm N2/N N2/N ratio
V2-Hrm N1/N N1/N ratio
V2-Hrm N2/N N2/N ratio
V3-Hrm N1/N N1/N ratio
V3-Hrm N2/N N2/N ratio
PO V1-Hrm N1/N N1/N ratio of previous Observation Period
PO V1-Hrm N2/N N2/N ratio of previous Observation Period
PO V2-Hrm N1/N N1/N ratio of previous Observation Period
PO V2-Hrm N2/N N2/N ratio of previous Observation Period
PO V3-Hrm N1/N N1/N ratio of previous Observation Period
PO V3-Hrm N2/N N2/N ratio of previous Observation Period
Register Label Source Module Description
Register Label Description Register Label Description
PQ V1 THD mean average THD on phase 1 over 10 minutes PQ V2 TOHD mx maximum TOHD on phase 1 over 10 minutes
PQ V1 THD mn minimum THD on phase 1 over 10 minutes PQ V2 TEHD mean average TEHD on phase 1 over 10 minutes
PQ V1 THD mx maximum THD on phase 1 over 10 minutes PQ V2 TEHD mn minimum TEHD on phase 1 over 10 minutes
PQ V1 TOHD mean average TOHD on phase 1 over 10 minutes PQ V2 TEHD mx maximum TEHD on phase 1 over 10 minutes
PQ V1 TOHD mn minimum TOHD on phase 1 over 10 minutes PQ V3 THD mean average THD on phase 3 over 10 minutes
PQ V1 TOHD mx maximum TOHD on phase 1 over 10 minutes PQ V3 THD mn minimum THD on phase 3 over 10 minutes
PQ V1 TEHD mean average TEHD on phase 1 over 10 minutes PQ V3 THD mx maximum THD on phase 3 over 10 minutes
PQ V1 TEHD mn minimum TEHD on phase 1 over 10 minutes PQ V3 TOHD mean average TOHD on phase 1 over 10 minutes
PQ V1 TEHD mx maximum TEHD on phase 1 over 10 minutes PQ V3 TOHD mn minimum TOHD on phase 1 over 10 minutes
PQ V2 THD mean average THD on phase 2 over 10 minutes PQ V3 TOHD mx maximum TOHD on phase 1 over 10 minutes
PQ V2 THD mn minimum THD on phase 2 over 10 minutes PQ V3 TEHD mean average TEHD on phase 1 over 10 minutes
PQ V2 THD mx maximum THD on phase 2 over 10 minutes PQ V3 TEHD mn minimum TEHD on phase 1 over 10 minutes
PQ V2 TOHD mean average TOHD on phase 1 over 10 minutes PQ V3 TEHD mx maximum TEHD on phase 1 over 10 minutes
PQ V2 TOHD mn minimum TOHD on phase 1 over 10 minutes