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TechNotes

TechNotes

TechNotes
Publication # Title & Description Topic
TN-GENL-1

The Effective Value of Source Impedance

Explains the difference between transformer nameplate impedance and effective percent impedance that contributes to the input harmonic current spectrum for a 6-pulse rectifier.

APQ Series Type F Power Factor Correction Filter Banks, APQ Series Type C Power Factor Correction Banks, Line Reactors, APQ Series Power Factor Correction Capacitor

General
TN-GENL-2

PCC, THD, TDD:

Explains Point of Common Coupling, Total Harmonic Distortion, and Total Demand Distortion

Medium Voltage, Low Voltage

General
TN-LPF-1

Theory of Operation:

Three stage filtering achieves wide band attenuation of harmonics associated with 6-pulse power converters.

LPF Series Solutions, Harmonics, Low Voltage

Harmonic Mitigation Low Pass Filter
TN-LPF-2

The Effects of Impedance on Harmonic Distortion:

The magnitude of harmonic current distortion depends greatly on the upstream effective impedance. Shows the expected harmonic current distortion based on effective input impedance.

LPF Series Solutions, Harmonics, Low Voltage

Harmonic Mitigation Low Pass Filter
TN-LPF-3

The Benefits of Using Low Pass Harmonic Filters:

Minimize harmonic current and voltage distortion while reducing TRMS current and kVA.

LPF Series Solutions, Harmonics, Low Voltage

Harmonic Mitigation Low Pass Filter
TN-LPF-4

APQ Low Pass Harmonic Filters Perform better than others:

Explains filter design and component construction techniques that enable APQ Low Pass Harmonic Filters to outperform others.

LPF Series Solutions, Harmonics, Low Voltage

Harmonic Mitigation Low Pass Filter
TN-LPF-5

APQ Low Pass Harmonic Filters vs. 18-pulse

Lower power losses and lower harmonic distortion especially at light load conditions.

12 & 18 Pulse Converter Kits, LPF Series Solutions, Harmonics, Low Voltage

Harmonic Mitigation Low Pass Filter
TN-LPF-6

Voltage Distortion - Cause and Effect:

What causes system harmonic voltage distortion & effects it can have on other equipment.

LPF Series Solutions, Harmonics, Low Voltage

Harmonic Mitigation Low Pass Filter
TN-LPF-7

Avoiding Harmonic Resonance with Low Pass Harmonic Filters:

Explanation of Harmonic resonance and how the LPF avoids harmonic resonance.

LPF Series Solutions, Harmonics, Low Voltage

Harmonic Mitigation Low Pass Filter
TN-LPF-8

De-rating Requirements for Harmonic Filters:

De-rating charts for high elevation and high ambient temperature.

LPF Series Solutions, Harmonics, Low Voltage

Harmonic Mitigation Low Pass Filter
TN-LPF-9

Understanding IEEE-519:

Explains the intent and application of IEEE-519 as well as techniques for attaining compliance.

LPF Series Solutions, Harmonics, Low Voltage

Harmonic Mitigation Low Pass Filter
TN-LPF-10

Selecting Low Pass Filter for DC Drives

Using APQ's Low Pass Harmonic Filter for DC Drive applications.

LPF Series Solutions, Harmonics, Low Voltage

Harmonic Mitigation Low Pass Filter
TN-LPF-11

Satisfy 240 V applications with 480 V Low Pass Harmonic Filters

Use Standard stock filters (rated 480V) to satisfy your urgent requirements for 240 volt filters.

LPF Series Solutions, Harmonics, Low Voltage

Harmonic Mitigation Low Pass Filter
TN-MP-1

Series vs. Parallel Connection of Multi-pulse Rectifiers

Explains configuration and performance of series vs. parallel connected 18-pulse rectifiers/drives.

12 & 18 Pulse Converter Kits, Low Voltage

Harmonic Mitigation Multi-pulse (18) Rectifiers
TN-SWF-1

When to Use a Motor Sine Wave Filter

Recommendations for submersible motors and motor’s with long cable length.

Sine Wave dv/dt Filters, PWM Voltage

PWM Voltage Sine Wave Filters