Power Quality Instruments & Analyzers
Portable analyzers, compliance loggers, transformer monitors, load loggers, and asset condition monitoring instruments for utilities and industrial facilities.
Power quality problems are often invisible until they cause failures, nuisance trips, equipment damage, or compliance issues. Measuring and understanding what is happening on the network is the starting point for fixing it. ProgUSA supplies Sonel power quality analyzers and CHK Power Quality monitoring instruments to utilities, electrical service providers, and industrial facilities across the United States, backed by application support, training, calibration, and repair.
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What power quality instruments cover
- Harmonics and total harmonic distortion (THD) measurement
- Voltage sags, swells, and interruptions
- Transient event capture and analysis
- Flicker measurement (PST and PLT per IEC 61000-4-15)
- Power factor and reactive power measurement
- Voltage and current unbalance
- Frequency measurement and deviation
- Energy measurement and 4-quadrant power analysis
- Mains signaling and interharmonics
- Ground voltage and neutral monitoring
- Transformer load and condition monitoring
- Multi-channel load current logging
- Long-term compliance recording per EN 50160 and IEC 61000-4-30
Common applications
Where this equipment is used
- Utility network supply compliance monitoring and reporting
- Customer complaint investigation
- Energy audits and load profiling
- Industrial plant power quality diagnostics
- Transformer load monitoring and condition assessment
- Renewable energy system performance monitoring (solar, wind)
- Railway and transit system power monitoring
- Fault finding and root cause investigation
- Distribution network planning and load flow studies
- Commissioning and acceptance testing
Applications of Portable Power Quality Analyzers
Portable power quality analyzers find applications in various industries and environments, including:
- Industrial settings
- Commercial buildings
- Renewable energy installations
Tips for Effective Use of Portable Power Quality Analyzers
To get the most out of your portable power quality analyzer, follow these tips:
Proper placement and setup are crucial for accurate measurements.
Regular maintenance and calibration ensure reliable performance.
Portable Power Quality Analyzers
CHK Power Quality offers Portable Power Quality Analyzers and Portable Power Quality Loggers that are high precision, weatherproof, and offer comprehensive power quality measurements, including Voltage Sags, Swells, Interruptions, Flicker, Temperature, Frequency, Mains Signaling, Power and Energy and Ground voltages. Browse our portable power analyzer product range below.
CHK Power Quality CHK Miro-F — Transformer Monitor and Logger The Miro-F is designed specifically for large-scale transformer monitoring programs. Provides data to support optimized maintenance, operations, and network planning decisions. Compatible with the CHK Auxiliary I/O Module for expanded condition monitoring inputs, enabling simultaneous monitoring of transformer condition parameters (such as hydrogen and moisture in oil) alongside power quality measurements within a single system. Key capabilities:
- Purpose-built for transformer condition and load monitoring
- Scalable for large network monitoring deployments
- Compatible with Auxiliary I/O Module for multi-parameter condition monitoring
- Correlates transformer condition data with power quality metrics in Citrus software
- Supports AsMoSys web-based monitoring platform
- Suited for utility network planning and maintenance optimization
Sonel
Sonel S.A. is a Polish manufacturer of electrical test and measurement instruments with over 35 years of experience. Their PQM series power quality analyzers are used by professional power engineers and utilities in over 50 countries. Sonel instruments are recognized for innovative design, measurement accuracy, and long-term reliability across demanding field conditions.
CHK Power Quality
CHK Power Quality is an Australian engineering company specializing in the design and manufacture of Class A power quality analyzers, transformer monitors, load loggers, and asset condition monitoring instruments. Their MIRO and Mirrin product lines are used by electric utilities, railway operators, water authorities, and industrial customers across Australia and internationally. CHK instruments are supported by Citrus software for analysis and EN 50160 compliance reporting, and AsMoSys for web-based network monitoring.
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