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Interharmonic Voltage ION 7500 / ION 7600 User’s Guide
Page 320 Power Quality: ION Meters and EN50160 Technical Note
Interharmonics Default Measurements
* This data is recorded weekly by Data Recorder 30.
Register Label Source Module Description
V1-Inthrm N*
Harmonics
Evaluation
number of valid intervals (voltage on phase 1 within +/- 15% of nominal)
V1-Inthrm N ivd* number of invalid intervals
V1-Inthrm N1* number of intervals in which one or more individual harmonics on phase 1 exceed their limits
V2-Inthrm N* number of valid intervals (voltage on phase 2 within +/- 15% of nominal)
V2-Inthrm N ivd* number of invalid intervals
V2-Inthrm N1* number of intervals in which one or more individual harmonics on phase 2 exceed their limits
V3-Inthrm N* number of valid intervals (voltage on phase 3 within +/- 15% of nominal)
V3-Inthrm N ivd* number of invalid intervals
V3-Inthrm N1* number of intervals in which one or more individual harmonics on phase 3 exceed their limits
PO V1-Inthrm N
Store
V1-Inthrm N of the previous Observation Period
PO V1-Inthrm N1 V1-Inthrm N1 of the previous Observation Period
PO V2-Inthrm N V2-Inthrm N of the previous Observation Period
PO V2-Inthrm N1 V2-Inthrm N1 of the previous Observation Period
PO V3-Inthrm N V3-Inthrm N of the previous Observation Period
PO V3-Inthrm N1 V3-Inthrm N1 of the previous Observation Period
V1-Inthrm N1/N
Arithmetic
N1/N ratio
V2-Inthrm N1/N N1/N ratio
V3-Inthrm N1/N N1/N ratio
PO V1-Ihrm N1/N N1/N ratio of previous Observation Period
PO V2-Ihrm N1/N N1/N ratio of previous Observation Period
PO V3-Ihrm N1/N N1/N ratio of previous Observation Period