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United in Power Quality - FRANEO 800 IT PQlyzer
January 17, 2025
FRANEO 800 IT PQlyzer
Wideband instrument transformer testing for power quality (PQ) applications.
For VT, CVT and LPVT
Wideband analysis up to 500 kHz
Lightweight system, ideal for laboratory and on-site use
Accurate analysis under field-like conditions
Choose between 200 kΩ and >10 MΩ
Harmonic measurement according to IEC 61869-1:2023
Solution for Accurate Wideband Power Quality Testing
The FRANEO 800 IT PQlyzer enables wideband ratio and phase accuracy testing for instrument transformers up to 500 kHz, enabling accurate transformer performance assessments in power quality applications.
The solution is designed for ratio and phase error measurements of inductive and capacitor voltage transformers (VTs, CVTs) and low-power voltage transformers (LPVTs). It combines the FRANEO 800, the Electronic Impedance Converter EIC1, and the FRANEO PQlyzer software with a guided workflow optimized for wideband testing.
Benefits
The FRANEO 800 IT PQlyzer Provides the Following Benefits:
Accurate measurement of ratio and phase errors in VTs and LPVTs for power quality applications.
Wideband analysis up to 500 kHz for detecting harmonic and distorted signals.
Adjustable burden with EIC1 (200 kΩ, 1 MΩ, 2 MΩ, 10 MΩ and >10 MΩ) for realistic field simulations.
Smart PQlyzer software for fast guided testing, analysis, and reporting.
A portable, lightweight solution for laboratory and on-site use (compliant with IEC 61869-1:2023).
Technical Specifications
Get to Know the FRANEO 800 IT PQlyzer
INPUT:
Adjustable input impedance
RESPONSE:
Output impedance 50 Ω
Wheel for adjusting the input impedance
Indicator light:
Green = power is on
Power Quality Measurements Begin with Instrument Transformers
Accurate power quality measurements depend on instrument transformers, which scale and transfer grid signals to measurement systems.
Their ratio and phase accuracy directly influence the reliability of PQ data, particularly when measuring grids with harmonic distortion and renewable energy integration.
To ensure trustworthy results, instrument transformer performance must be verified throughout the entire operational frequency range.
Guided Workflow for Wideband Analysis
The FRANEO 800 IT PQlyzer software provides a guided workflow for wideband testing, including measurement setup, analysis, and reporting. This helps simplify testing procedures, improve efficiency, and ensure consistent results.
The Impact of Instrument Transformer Errors on Power Quality Data
Ratio and phase errors in instrument transformers at the harmonic frequency range can significantly distort power quality measurement data. This can lead to misinterpreting PQ events, ineffective corrective actions, undetected disturbances, increased equipment stress, and reduced grid reliability.
Insights
Why is wideband accuracy important for voltage transformers (VTs)?
Wideband accuracy ensures that voltage transformers can reliably measure signals beyond the fundamental frequency (50 Hz). This is essential because non-linear accuracy of the instrument transformer in the harmonic range can lead to inaccurate power quality (PQ) assessments and potentially incorrect operational decisions.
Can wideband VT testing be performed on site?
Yes, the FRANEO 800 IT PQlyzer is a portable solution designed for laboratory and on-site testing. Its lightweight, modular setup enables wideband ratio and phase error measurements directly at installation sites, reducing testing effort and eliminating the need for laboratory transport in many applications.
Why is adjustable burden important for VT testing?
Instrument transformer performance depends on the connected burden. With the EIC1, FRANEO 800 IT PQlyzer supports selectable burden settings from 200 kΩ to >10 MΩ, enabling realistic field-operating-condition simulations and more accurate assessments of transformer behavior.
Why is testing up to 500 kHz important?
Modern power systems contain harmonics and high-frequency components generated by power electronics, renewable energy sources, and nonlinear loads. Testing up to 500 kHz helps ensure that instrument transformers accurately reproduce these signals for reliable power quality analysis.
What impact do harmonics have on power systems?
Harmonics can degrade power quality by distorting voltage waveforms, increasing losses, and causing overheating in equipment such as transformers, motors, and conductors. Over time, this can reduce asset lifespan and system reliability.
What is the IEC 61869-1 Ed2 wideband (WB) classification?
The IEC 61869-1 Ed2 standard defines wideband accuracy classes (WB0 to WB4) for instrument transformers. These classes specify allowable ratio and phase errors across extended frequency ranges, from harmonic levels up to 500 kHz, enabling standardized transformer performance evaluations for wideband applications.
What are the limitations of conventional VT testing methods?
Traditional testing requires removing the transformer from service and transporting it to a laboratory. This process is time-consuming and costly, and it limits the ability to perform frequent or in-situ transformer performance verification.
How does the proposed testing solution improve VT verification?
The FRANEO 800 IT PQlyzer is a portable, battery-operated solution that uses a sweep frequency response analyzer (FRANEO 800) and an impedance converter (EIC1). This setup enables on-site measurement of ratio and phase errors across a wide frequency range.
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