UTE9811+ Smart Digital Power Meter | Advanced Harmonic Analysis Solution

Overview

The UTE9811+ Smart Digital Power Meter sets a new standard for harmonic analysis in power measurement instrumentation. Engineered for professionals who require detailed power quality assessment, this advanced meter combines comprehensive harmonic measurement capabilities with exceptional measurement accuracy. Using phase-locked loop (PLL) synchronization and innovative digital signal processing algorithms, the UTE9811+ delivers harmonic analysis up to the 50th order with industry-leading precision and update speeds as fast as 0.1 seconds.

The instrument's intuitive multi-window display provides simultaneous visualization of voltage, current, power, and harmonic components, enabling engineers and technicians to quickly identify power quality issues and their sources. With its ability to measure voltage crest ratio and current crest ratio, the UTE9811+ offers powerful tools for evaluating non-linear loads and analyzing distorted waveforms that can affect equipment reliability and efficiency. Perfect for power quality audits, equipment validation, and troubleshooting complex electrical systems, the UTE9811+ delivers professional-grade performance in both laboratory and field environments.

Key Features

• Comprehensive Harmonic Analysis - Measures up to the 50th harmonic with industry-leading accuracy
• Rapid Update Rate - Harmonic measurement data updates as fast as 0.1 seconds for real-time analysis
• Crest Ratio Measurement - Accurately evaluates voltage and current crest ratios for non-linear load analysis
• Multi-window Display - Simultaneously view voltage, current, power, and harmonic/frequency measurements
• PLL Synchronization - Phase-locked loop technology ensures precise harmonic capture and analysis
• Automatic Range Selection - Optimizes measurement accuracy by selecting the appropriate range
• Limit Testing and Alerting - Set upper and lower limits for current and power with audible and visual alerts
• Communication Versatility - RS-232 and RS-485 interfaces with SCPI and Modbus protocol support
• Rugged Construction - Fall-proof design with silicone angle protection for field and laboratory use
• PC Software Integration - Visualize harmonic spectrums and export data for detailed analysis

UTE9811+ Details

Advanced Harmonic Measurement Technology

The UTE9811+ employs sophisticated phase-locked loop (PLL) synchronization combined with innovative digital signal processing algorithms to deliver exceptional harmonic analysis capabilities. This technology enables accurate measurement of harmonic components up to the 50th order with update rates as fast as 0.1 seconds. The high-speed processing dramatically improves test efficiency compared to conventional instruments, allowing engineers to quickly identify and characterize harmonic distortion in electrical systems.

Superior Distortion Analysis with Crest Ratio Measurement

Unique to the UTE9811+ is its ability to measure both voltage and current crest ratios, providing critical insights into waveform distortion. Crest ratio analysis helps identify potential issues with non-linear loads, switching power supplies, and other sources of harmonics that can affect power quality. This capability is invaluable for diagnosing equipment performance problems, preventing premature component failure, and ensuring compliance with power quality standards.

Comprehensive Power Quality Assessment

Beyond harmonic analysis, the UTE9811+ delivers precise measurements of voltage, current, active power, power factor, and frequency. This comprehensive approach to power quality assessment enables thorough evaluation of electrical system performance. The instrument's multi-window display presents these parameters simultaneously, providing a complete picture of power characteristics at a glance and streamlining the analysis process.

Enhanced Visualization and Data Analysis

The UTE9811+ seamlessly integrates with its companion PC software to provide powerful visualization tools for harmonic analysis. The software generates detailed harmonic spectrum displays, trend analysis, and comprehensive reports that document power quality metrics. Data can be exported in CSV format for further analysis or integration with other systems, making it easy to share findings and maintain detailed records of power quality assessments.

Professional Applications

Industrial Power Quality Audits

The UTE9811+ is the ideal instrument for conducting comprehensive power quality audits in industrial facilities. Its advanced harmonic analysis capabilities help identify sources of harmonic distortion that can cause equipment overheating, nuisance tripping, and reduced efficiency. By pinpointing harmonic issues, engineers can implement appropriate mitigation strategies, improving overall system reliability and extending equipment life.

LED Lighting System Evaluation

For lighting designers and manufacturers, the UTE9811+ provides detailed analysis of LED driver harmonic performance. Its ability to measure current harmonics with high precision helps ensure compliance with relevant standards and prevents harmonic-related issues in lighting installations. The instrument's crest ratio measurement capability is particularly valuable for evaluating the impact of LED loads on power systems and optimizing driver designs.

Variable Frequency Drive Testing

The UTE9811+ excels in analyzing the harmonic distortion generated by variable frequency drives (VFDs) and other power electronic equipment. Engineers can accurately assess the harmonic content of VFD current draw and implement appropriate filtering solutions. This analysis is critical for maintaining power quality in industrial environments where VFDs are increasingly common and can significantly impact system performance.

Renewable Energy Integration

When integrating renewable energy sources like solar and wind power, the UTE9811+ helps evaluate the harmonic impact of inverters on the electrical system. Its comprehensive harmonic analysis capabilities ensure that these installations meet grid connection requirements and do not introduce power quality issues. The instrument provides the data needed to specify harmonic filters and other mitigation measures when required.

Technical Specifications

Optional Accessories

Package Contents

• UTE9811+ Smart Digital Power Meter
• Power cord
• Test leads
• User manual
• Calibration certificate
• RS232 serial port line (1)

UTE9800+ Series Comparison Table

Frequently Asked Questions

What makes the UTE9811+'s harmonic measurement capabilities superior to other power meters?

The UTE9811+ combines phase-locked loop (PLL) synchronization with innovative digital signal processing algorithms to deliver harmonic analysis up to the 50th order with exceptional accuracy. Its rapid update rate of 0.1 seconds is significantly faster than conventional instruments, allowing real-time monitoring of harmonic components. Comparative testing has shown the UTE9811+ provides higher precision in harmonic measurements than comparable instruments, particularly at higher harmonic orders.

How does crest ratio measurement help identify power quality issues?

Crest ratio (the ratio of peak value to RMS value) is a key indicator of waveform distortion. In ideal sinusoidal waveforms, the crest ratio equals 1.414 (√2). Deviations from this value indicate distortion that can cause equipment issues like overheating, nuisance tripping, and reduced efficiency. The UTE9811+'s ability to measure both voltage and current crest ratios helps identify non-linear loads and other sources of harmonics that affect power quality, enabling targeted mitigation strategies.

Can the UTE9811+ be used for compliance testing with power quality standards?

Yes, the UTE9811+ is well-suited for verifying compliance with power quality standards that specify harmonic limits, such as IEEE 519 and IEC 61000-3-2. Its comprehensive harmonic analysis capabilities provide the detailed measurements required to assess compliance with these standards. The instrument's PC software further enhances this capability by generating detailed reports that document harmonic content for compliance documentation.

How does harmonic distortion affect electrical equipment and why is measurement important?

Harmonic distortion can cause numerous problems in electrical systems, including overheating of transformers and motors, nuisance tripping of circuit breakers, reduced power factor, and interference with sensitive electronic equipment. By accurately measuring harmonic content with the UTE9811+, engineers can identify harmonic sources, evaluate their impact, and implement appropriate mitigation measures like harmonic filters or system redesigns before equipment damage occurs.

What is the advantage of the PLL synchronization method for harmonic measurement?

Phase-locked loop (PLL) synchronization enables the UTE9811+ to precisely lock onto the fundamental frequency of the measured signal, even when it deviates from nominal values or fluctuates. This precise synchronization ensures accurate harmonic analysis by maintaining the correct phase relationship between the fundamental and harmonic components. The result is more reliable harmonic measurements, particularly in systems with frequency variations or significant distortion.

Can the UTE9811+ analyze transient harmonic events?

With its rapid update rate of 0.1 seconds, the UTE9811+ can capture relatively fast changes in harmonic content, making it suitable for analyzing semi-transient harmonic events. While it's not designed for capturing microsecond-level transients like dedicated power quality analyzers, its sampling rate is sufficient for most industrial applications involving harmonic fluctuations. The instrument's data logging capabilities also allow for extended monitoring to capture intermittent harmonic issues.

Customer Testimonials

"As an electrical engineer specializing in industrial power quality, I rely on the UTE9811+ for its exceptional harmonic analysis capabilities. The ability to measure up to the 50th harmonic with such precision has helped us identify issues that were previously undetectable with our standard equipment. The fast update rate also makes troubleshooting much more efficient." - Rajeev S., Power Quality Consultant

"We've implemented the UTE9811+ in our lighting lab to evaluate the harmonic performance of our LED drivers. The crest ratio measurement has been particularly valuable for optimizing our designs and ensuring compliance with power quality standards. The detailed data we get from this instrument has directly contributed to improving our products." - Elena K., Senior Design Engineer

"In our manufacturing facility, we've used the UTE9811+ to diagnose recurring issues with our VFD-driven equipment. The comprehensive harmonic analysis revealed specific harmonics that were causing resonance issues in our electrical system. After implementing targeted filtering based on the UTE9811+'s measurements, we've seen a significant reduction in equipment failures and downtime." - Jamal T., Maintenance Manager

Warranty and Support

The UTE9811+ Smart Digital Power Meter comes with a comprehensive 3-year warranty covering manufacturing defects and component failures under normal use conditions. UNI-T provides dedicated technical support through our experienced team of application engineers. For technical assistance, contact our support hotline at 400-876-7822 or visit our support website.

Elevate Your Power Quality Analysis with Precision

The UTE9811+ Smart Digital Power Meter delivers the advanced harmonic analysis capabilities that power quality professionals demand. With industry-leading measurement accuracy, comprehensive harmonic assessment up to the 50th order, and intuitive operation, this instrument provides the insights needed to identify and resolve complex power quality issues. Order now to experience the difference that professional-grade harmonic analysis can make in your electrical testing applications.

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