SmartDCDC-01 / Data hall 01 / Harmonics & waveform217:46:52 ETDemo dataProduct overview

Harmonics & waveform

Measurement guide

Understand distortion, phase balance and the shape of your power.

Utility incomer · Path A · 480/277 V · 60 Hz · Three-phase wye · 3φ 4-wire · Simulated instruments · Read-only

Highest voltage THD1.80%All phases · harmonic / fundamental
Highest current THD3.90%Present-current fundamental basis
Largest harmonicH51.46% · voltage spectrum
Current demand distortion—TDDIL reference not configured

Harmonic spectrum

Individual harmonic content, h = 2 to 50

  • L1
  • L2
  • L3
0%0.5%1%1.5%25101520253035404550

Harmonic order · h × 60.01 Hz

H5 · 300.1 HzL1 1.382%L2 1.463%L3 1.301%% of fundamental RMS

Waveform detail

Inspect shape, phase and distortion

Two cycles, synthesized from the same fundamental and harmonic phasors used for RMS, power and THD. This is not a capture from connected hardware.
  • L1
  • L2
  • L3
-500-25002505000.08.316.624.933.3V L–NTime · ms

Two cycles, synthesized from the same fundamental and harmonic phasors used for RMS, power and THD. This is not a capture from connected hardware.

THD, TDD & assessment basis

Keep the denominator and measurement boundary visible

A large THD reading at low load does not by itself establish a demand-based compliance failure. No standards pass or fail is assigned here.

THD: waveform distortion

Voltage and current THD compare the RMS harmonic sum with the fundamental RMS value at this meter.

THD = 100 × √Σ(h₂…h₅₀²) / fundamental

TDD: demand-based current distortion

TDD uses the configured maximum-demand fundamental current IL, not the present current. It needs a valid demand reference and measurement boundary.

TDD = 100 × harmonic current RMS / IL
Demand current reference IL
Not configured
Current TDD
Not evaluated
PCC compliance assessmentNeeds a PCC definition, ISC / IL and assessment periods
Not configured

A large THD reading at low load does not by itself establish a demand-based compliance failure. No standards pass or fail is assigned here.

Current stress & neutral loading

Waveform-derived indicators at the selected meter

Maximum current crest factor
1.422

Peak / RMS in the shown window

Neutral RMS current
16.9A

Sum of the phase waveforms

Neutral third harmonic
8.1A RMS

Triplen harmonic contribution

Phase current spread
0.75%

Maximum deviation from phase mean

Flicker & additional frequency bands

Coverage and measurement windows

Plt is the cubic mean of 12 completed 10-minute Pst windows. These are independent simulated registers, not calculated from the waveform above. Rapid voltage change detection is not instrumented.
Pst · short-term flicker
0.300

10-minute observation · simulated register

Plt · long-term flicker
0.273

2-hour observation · 12 completed Pst windows

Interharmonic groupsIndividual integer harmonics do not cover these bands
Not instrumented
2–150 kHz emissionsNeeds compatible high-frequency acquisition
Not instrumented

Plt is the cubic mean of 12 completed 10-minute Pst windows. These are independent simulated registers, not calculated from the waveform above. Rapid voltage change detection is not instrumented.

Harmonic register detail

Voltage RMS magnitude · percent of same-phase fundamental

49 orders per selected phase, 2 through 50. The fundamental, h = 1, is the 100% reference.
OrderFrequencyL1L2L3Order group
120.0 Hz0.0415 %0.0439 %0.0390 %Even order
180.0 Hz0.1797 %0.1902 %0.1691 %Triplen
240.0 Hz0.0000 %0.0000 %0.0000 %Even order
300.1 Hz1.3820 %1.4633 %1.3007 %Odd order
360.1 Hz0.0000 %0.0000 %0.0000 %Triplen
420.1 Hz0.8567 %0.9071 %0.8063 %Odd order
480.1 Hz0.0000 %0.0000 %0.0000 %Even order
540.1 Hz0.0830 %0.0878 %0.0781 %Triplen
600.1 Hz0.0000 %0.0000 %0.0000 %Even order
660.1 Hz0.3454 %0.3657 %0.3251 %Odd order
720.1 Hz0.0000 %0.0000 %0.0000 %Triplen
780.1 Hz0.2489 %0.2635 %0.2342 %Odd order
840.1 Hz0.0000 %0.0000 %0.0000 %Even order
900.2 Hz0.0000 %0.0000 %0.0000 %Triplen
960.2 Hz0.0000 %0.0000 %0.0000 %Even order
1,020.2 Hz0.1107 %0.1172 %0.1042 %Odd order
1,080.2 Hz0.0000 %0.0000 %0.0000 %Triplen
1,140.2 Hz0.0830 %0.0878 %0.0781 %Odd order
1,200.2 Hz0.0000 %0.0000 %0.0000 %Even order
1,260.2 Hz0.0000 %0.0000 %0.0000 %Triplen
1,320.2 Hz0.0000 %0.0000 %0.0000 %Even order
1,380.2 Hz0.0552 %0.0585 %0.0520 %Odd order
1,440.2 Hz0.0000 %0.0000 %0.0000 %Triplen
1,500.3 Hz0.0415 %0.0439 %0.0390 %Odd order
1,560.3 Hz0.0000 %0.0000 %0.0000 %Even order
1,620.3 Hz0.0000 %0.0000 %0.0000 %Triplen
1,680.3 Hz0.0000 %0.0000 %0.0000 %Even order
1,740.3 Hz0.0000 %0.0000 %0.0000 %Odd order
1,800.3 Hz0.0000 %0.0000 %0.0000 %Triplen
1,860.3 Hz0.0000 %0.0000 %0.0000 %Odd order
1,920.3 Hz0.0000 %0.0000 %0.0000 %Even order
1,980.3 Hz0.0000 %0.0000 %0.0000 %Triplen
2,040.3 Hz0.0000 %0.0000 %0.0000 %Even order
2,100.4 Hz0.0000 %0.0000 %0.0000 %Odd order
2,160.4 Hz0.0000 %0.0000 %0.0000 %Triplen
2,220.4 Hz0.0000 %0.0000 %0.0000 %Odd order
2,280.4 Hz0.0000 %0.0000 %0.0000 %Even order
2,340.4 Hz0.0000 %0.0000 %0.0000 %Triplen
2,400.4 Hz0.0000 %0.0000 %0.0000 %Even order
2,460.4 Hz0.0000 %0.0000 %0.0000 %Odd order
2,520.4 Hz0.0000 %0.0000 %0.0000 %Triplen
2,580.4 Hz0.0000 %0.0000 %0.0000 %Odd order
2,640.4 Hz0.0000 %0.0000 %0.0000 %Even order
2,700.5 Hz0.0000 %0.0000 %0.0000 %Triplen
2,760.5 Hz0.0000 %0.0000 %0.0000 %Even order
2,820.5 Hz0.0000 %0.0000 %0.0000 %Odd order
2,880.5 Hz0.0000 %0.0000 %0.0000 %Triplen
2,940.5 Hz0.0000 %0.0000 %0.0000 %Odd order
3,000.5 Hz0.0000 %0.0000 %0.0000 %Even order

49 orders per selected phase, 2 through 50. The fundamental, h = 1, is the 100% reference.