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DEWETRON’s power analyzer

With rapid technological advances and the growing need for high power efficiency, the complexity of power measurements and analyses has increased. Whether in the field of industrial motor testing, component evaluations, renewable energies, or smart grid assessments, precision and reliability are paramount. DEWETRON’s Power Analyzers excel in this environment and offer state-of-the-art solutions designed to meet these complex demands with exceptional accuracy and versatility. In this blog post, we’ll take a closer look at our range of power analyzers, showcasing their unique features and differences to help you identify the ideal tool for your specific needs.

What are power analyzers and what do you need them for?

Power analyzers are instruments used to measure and analyze electrical power in a system. They provide detailed data on parameters such as voltage, current, power, frequency, and harmonics. These devices are essential for evaluating the performance of electrical equipment, ensuring energy efficiency, and identifying issues in power quality. Power analyzers are widely used in research and development, manufacturing, and maintenance to optimize electrical systems and ensure compliance with regulatory standards.

Which power analyzers does DEWETRON offer?

At DEWETRON, we offer a variety of power analyzers tailored to diverse applications. Our lineup ranges from classical rackmount systems to compact and portable all-in-one devices. These analyzers are categorized into Standard and Advanced models, each catering to specific requirements.

Key features across all models include:

• 0.04% wideband power accuracy
• Intuitive user interface
• Advanced analyses, such as D/Q transformation, etc.
• Multiple interfaces for seamless integration into host systems

Fig. 1: Comparison of power accuracy over frequency between DEWETRON and typical competitors

Standard power analyzer – the LITE[PA]

Our standard power analyzers are equipped with inputs for 4 or 8 phases (voltage and current) and additional inputs for speed and torque measurements. They also support the integration of our XR series channel extensions for input signals with a low sampling rate for temperature measurements via RTDs or thermocouples, as well as voltage and current measurements. These systems feature multiple interfaces, including CAN, Ethernet, and USB.

Key features of the LITE[PA]:

• Sample rate up to 2MS/s
• Bandwidth up to 5 MHz
• Max. number of phases: 8
• Integrated touch-screen display
• 19” rack-mountable

Fig. 2: LITE[PA] – DEWETRON’s standard power analyzer

Advanced power analyzers

For more demanding applications, DEWETRON’s advanced models offer inputs for up to 16 phases and can handle various mixed-signal inputs, like accelerometers, strain gauges, etc. These systems are fully configurable, allowing for the exchange of measurement modules, making them ideal for complex environments such as aircraft power systems, smart grid evaluations, and high-precision component testing. Additionally, our advanced power analyzers support sample rates up to 10 MS/s and raw data waveform recording, with an optional real-time processing feature that typically has an output delay of just 2 ms.

PA-TRIONet3

The PA-TRIONet3 is our front-end power analyzer that connects to a PC via USB3 or Ethernet. The small size makes this power analyzer the ideal companion for mobile use.

Key features:

• Sample rate up to 1MS/s
• Bandwidth up to 5 MHz
• Max. number of phases: 4
• Exchangeable module
• Dimensions: 320 x 205 x 55 mm

Fig. 3: PA-TRIONet3

DEWE3-A4

The  DEWE3-A4 is the ultimate solution for in-vehicle and field power analysis applications. Its mobile and robust design includes stackable layers for battery power and current transducer supply, ensuring safe and reliable operation anywhere. Available with either 4 or 8 phases, a 4-phase system can also incorporate two additional exchangeable measurement modules for various signal types.

Key features:

• Sample rate up to 10 MS/s
• Bandwidth up to 5 MHz
• Max. number of phases: 8
• Exchangeable modules
• All-in-one system

Fig. 4: DEWE3-A4 stacked on current transducer supply and battery power boxes

DEWE3-PA8 & DEWE3-PA8-RM

These advanced stationary power analyzers are designed for demanding applications, providing online analysis of up to 16 phases at a maximum sample rate of 10 MS/s. They include an integrated power supply for up to 8 current transducers and are available in two configurations: an all-in-one system with an integrated touch screen or a typical rackmount device. Ideally suited for laboratory and test bench environments, these systems are true powerhouses for precise and comprehensive power analysis.

Key features:

• Sample rate up to 10 MS/s
• Bandwidth up to 5 MH
• Max number of phases: 16
• Exchangeable modules
• Integrated CT power supply

Fig. 5: Back- and frontside of DEWE3-PA8 (left) and DEWE3-PA8-RM (right)

In the following table, we show a more detailed comparison of our various power analyzers.

Tab 1. Power analyzer comparison

¹Chassis-OPT required; ²Ethernet of used PC; ²Only in case of 4 phase system

TRION(3) power modules

The core of every advanced power analyzer is the TRION(3) power module. Each module supports 4-phase power analysis with separate A/D conversion on each channel. We offer a variety of power modules, detailed in Tab 2, each featuring at least four (max eight) exchangeable submodules for customizable input configurations.

Tab 2: List of DEWETRON power modules and their key specifications

Fig. 6: TRION3-1810-SUB-8 (left), TRION-1820-POWER (center), TRION3-1810M-POWER (right)

Advanced power analysis with OXYGEN

In addition to our hardware, we offer the required software for quick and easy analysis of your power measurements. Our user-friendly measurement software, OXYGEN, is the perfect complement to our standard and advanced power analyzers. Within OXYGEN, you can choose from BASIC, ADVANCED, or EXPERT options, each designed to enhance your system analysis with specific features. Regardless of the option you select, all versions include the following BASIC features:

• Analysis of 1-9 phase power systems
• Logical summarization of multiple power systems into Power Groups
• Gapless cycle-by-cycle calculation
• Fundamental frequency detection
• Current and voltage sensor delay compensation
• Symmetrical components for unbalanced three-phase systems
• Power instrument for quick and easy visual representation
• …and more

For more in-depth analysis, the ADVANCED option offers tools such as d/q analysis, efficiency grouping for DC and mechanical inputs, and the analysis of harmonics, interharmonics, higher frequencies, and supraharmonics. The EXPERT option includes the full package, adding rolling calculations that meet FGW-TG3 (TR3) requirements.

Fig. 7: OXYGEN’s software option for power analysis

Summary

DEWETRON’s power analyzers are designed to excel in today’s high-tech environments, offering solutions for every need—from compact, modular devices for field testing to robust systems for intricate testbed applications. Each system delivers unmatched precision, reliability, and flexibility, featuring sample rates up to 10 MS/s, synchronized measurements for up to 16 phases, and a power accuracy of 0.04%. Enhanced by our exchangeable TRION(3) power modules and the OXYGEN software suite, DEWETRON provides a comprehensive solution for accurate and efficient power analysis. Explore our range of analyzers to find the perfect fit for your needs and elevate your power analysis to new heights.

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