The Sonel PQM-707 power quality analyser from Action Instruments represents a significant advancement in portable power monitoring technology, combining professional-grade measurement capabilities with the mobility and autonomy that modern maintenance teams require. This comprehensive analyser addresses the growing need for on-site power quality diagnostics across a wide range of industrial and commercial applications.
Autonomous operation with professional precision
At the heart of the PQM-707's capabilities lies its autonomous design, which enables versatile measurement, analysis, and registration of energy network parameters across both DC and 50/60 Hz systems. The device stands out in the market by ensuring all parameters are measured to Class S specifications according to the IEC 61000-4-30 standard, guaranteeing the high accuracy of measurements that professionals demand.
The analyser's built-in lithium-ion battery eliminates the dependency on external AC adapters during measurements, providing the freedom to conduct thorough power quality assessments in locations where mains power may be unreliable or unavailable. This autonomous operation is particularly valuable for maintenance staff who need to diagnose problems occurring in supply networks on the spot, without the constraints of fixed installation requirements.
Intuitive interface design for field operations
The device features a 7-inch colour touchscreen that serves as the primary interface for all operations. With an 800 x 480 pixel resolution, the display provides high comfort when interacting with the interface whilst ensuring excellent readability of measurement results even in challenging field conditions. The inclusion of a stylus allows technicians to operate the device effectively whilst wearing dielectric gloves, addressing a critical safety requirement in electrical work environments.
The touchscreen interface has been designed with ergonomic principles in mind, enabling intuitive operation that reduces the learning curve for new users whilst providing the depth of functionality that experienced professionals require. This approach to interface design significantly enhances the efficiency of field operations, allowing for quick setup and immediate access to comprehensive reporting functions.
Robust construction for demanding environments
The PQM-707's casing design prioritises both functionality and durability. The housing provides easy access to the touchscreen and all measurement and communication sockets, whilst incorporating a folding lid that protects the display from damage during transport and storage. With an IP51 protection rating, the device demonstrates its suitability for use in difficult conditions, offering effective protection against dust ingress and water splashes that are common in industrial environments.
This robust construction ensures that the analyser can withstand the rigours of field use without compromising its precision or reliability, making it an ideal choice for maintenance services in industrial plants and professional power engineering applications.
Comprehensive measurement capabilities
The analyser's measurement capabilities extend across an impressive range of parameters, providing comprehensive power quality analysis in a single instrument. The device measures voltages across five inputs (L1, L2, L3, N, PE) with values up to 760 V, capturing average, minimum, maximum, and instantaneous readings. Current measurements are handled through four inputs (L1, L2, L3, N) with capability up to 6 kA, depending on the current clamp applied.
Beyond basic electrical parameters, the PQM-707 captures crest factors for both current and voltage, frequency measurements within the 40-70 Hz range, and comprehensive power analysis including active, reactive, distortion, and apparent power. The device also calculates power factor, cosφ, and tanφ values, providing the complete picture that power quality professionals require.
Harmonic analysis extends up to the 50th order for both voltage and current, whilst event logging capabilities capture current and voltage anomalies, complete with oscillograms and half-period RMS charts. An integrated energy cost calculator adds practical value for economic analysis of power consumption and quality issues.