Sometimes when hooking up CTs for a device, a user will inadvertently place the CTs in the wrong configuration. Maybe the channel 2 CT was placed on the third phase…
White Papers
Browse our library of power quality technical resources.
185 results in Power Quality — Clear
Power Quality
60Hz Phasors and Extended PQ Measurements
This white paper walks the reader through a method to take basic core PQ measurements and derive several other measurements (such as 60Hz power, Voltage and Current THD, distortion power…
Datacenter Power Consumption
The proliferation of digital technologies has driven rapid growth of data centers across the United States. These facilities, housing the servers that power the internet, cloud computing, and big data…
Symmetrical Components from Stripchart Data
Symmetrical components can be useful in a PQ investigation, especially in cases of voltage imbalance, where the customer's negative sequence current can help determine their contribution to the imbalance. Many…
Record, Diagnose and Troubleshoot Oscillatory Transients
Oscillatory transients are caused by switching operations, nearby lightning strikes, or other impulsive noise exciting electrical resonances present on the network. The most common in the distribution system is defined…
Using PQ Canvass
PQ Canvass is an advanced cloud-based software application that enhances power quality analysis. PQ Canvass revolutionizes power monitoring with its comprehensive browser-based functionality, eliminating the need for additional software, and…
Residential Interharmonics
Interharmonics are produced when loads draw currentasynchronously to the utility voltage. Traditional loads include arc furnaces, welders, and AC-DC converter systems where the loads are fed from DC supplies. Historically…
Induction Motor Soft-Starters and Effects on Power Quality
This white paper describes using a motor soft-starter to reduce the effects of line changes due to high current in-rushes on AC induction motors. We'll start with the basics of…
Distributed Generation Power Quality Standards
The dramatic proliferation of Distributed Generation (DG) deployments began before power quality (PQ) standards were in place to ensure compatibility in the grid. IEEE 519-2014, a recommended practice for limiting…
Variable Frequency Drives and Harmonics
Abstract A VFD, or Variable Frequency Drive, is a device which takes in a 3 phase AC signal and outputs a somewhat arbitrary waveform using pulse width modulation. This is…
PQ Monitoring for Controlled Environments
The Tensor is an innovative PQ analysis tool introduced by Power Monitors. Inc. Equipped with cellular and WiFi communication options, the Tensor allows for continuous measurements wirelessly streamed for analysis…
Sizing a Backup Power Source
Sizing a backup power source is tedious. In an ideal world, every piece of equipment you need to protect would come with a spec sheet correctly detailing its power needs.…
