Measure Power with Precision – Across All Applications
Find Your Power Measurement Tool
Power measurement demands precision – and that’s exactly what we deliver. Our solutions combine advanced power analyzers and data acquisition tools with in-house developed current sensors engineered specifically for power measurement. With plug-and-play connectivity, broad bandwidth coverage, and outstanding accuracy, they perform reliably even in demanding scenarios like inverter and EV testing.
Follow us to power measurement solutions fitting your application needs and goals in each of three key environments: Research and Development (R&D), Manufacturing and Maintenance
Power Measurement for R&D, Manufacturing and Maintenance
Create ever-more efficient designs, with accurate power measurement insights.
- PW8001 Power Analyzer – our flagship instrument for advanced power measurement: the right choice for wide bandgap applications analysis.
- The PW3390 Power Analyzer is the ideal solution for everyone looking for an accurate yet compact 4-channel power analyzer.
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Rely on accurate power measurements to ensure stable quality output.
- PW3335/36/37 Power Meters for single- to three-phase power measurements.
- PW3390 Power Analyzer for advanced efficiency analysis.
- LR8102 Data Logger with the M7103 Module for synchronized multi-channel power and efficiency monitoring.
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Control your power: detect, diagnose, and document with confidence.
- PW3360 and PW3365 Series Clamp On Power Loggers for comprehensive energy logging and efficiency analysis.
- PQ3198 and PQ3100 Power Quality Analyzers for detailed assessment and troubleshooting of power supply anomalies.
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Expert tips: key specs to get it right
What you need to know before selecting a power measurement tool
✅ Power accuracy - Check the combined accuracy of the instrument and sensors to ensure reliable, precise results.
✅ Bandwidth - Select a bandwidth that is wide enough for your application such as capturing fast-switching and high-frequency signals accurately.
✅ Number of channels - Ensure the number of voltage, current and power inputs that matches your application’s requirements.
✅ Current measurement method - Choose a device withd direct current input or one that supports external sensors depending on installation constraints and the desired level of accuracy.
R&D: Precision power analyzers you can trust!
When performance, accuracy, and repeatability matter, the unique features of our power analyzers provide the insight engineers and developers need to push innovation forward. Whether you're developing next-generation EV components or optimizing power electronics, the Power Analyzers PW8001 and PW3390 are your ideal partners ensuring highest precision. Both deliver best accuracy with specially designed current sensors - learn more about HIOKI precision current sensors here.
Engineering Without Limits
The PW8001 Power Analyzer is our flagship power analyzer designed for high-precision measurement and advanced power analysis. Ideal for engineers working with wide bandgap semi-conductors, it reliably measures 0.1% efficiency improvements. It also enables accurate inverter efficiency measurements, high-frequency inductor analysis, and multi-motor efficiency evaluation.
Portable. Powerful. Precise
The PW3390 Power Analyzer is a portable, high-precision instrument for advanced efficiency and power analysis. It supports harmonic analysis, motor evaluation, and multi-phase measurement, helping engineers validate designs and optimize energy use under real-world conditions.
| Model |
🔗 PW8001 Power Analyzer |
🔗 PW3390 Power Analyzer |
|---|---|---|
| No. of Channels for power, voltage and current | 8 channels |
4 channels |
| Basic accuracy power |
0.03%* | 0.09%* |
| Bandwidth | 5 MHz Ideal to optimize SiC inverter and motor efficiency |
200 kHz The choice for renewable power converters efficiency measurements |
| Current measurement | 2000 A with external current sensors |
|
*Instrument accuracy at 50/60 Hz
PW8001
PW8001 - High Precision Power Analyzer
High precision power analyzer for power converter and inverter efficiency analysis, ±0.03% basic accuracy, 15 MHz sampling rate, 18-bit conversion, automatic phase shift correction for HIOKI current sensors, 1 ms data update rate and excellent noise resistivity of 110 dB @ 100 kHz.Technical details:Basic power accuracy ±0.03%8 power channels combined with motor analysisExcellent noise resistivity of 110 dB @ 100 kHz5 MHz frequency measurement band for powerStable and accurate measurement at 1 ms data update rateFunctions:8 power channels in combination with motor analysis for dual drivetrain analysisUnique power range with 2 A to 2 kA high accuracy HIOKI current sensorsPlug & Play connectivity with HIOKI current sensorsAutomatic Phase Shift Correction secures accurate high-frequency power measurementVisualize high-frequency loss with Power Spectrum Analysis measurementApplications:R&D and production line testing of high efficiency power converters and invertersLoss measurement of transformers and other inductive components under loadMotor efficiency measurementDetailed Description:The HIOKI PW8001 Power Analyzer is a state-of-the-art measurement instrument designed for the most demanding power analysis tasks, providing precise measurement results when evaluating efficiency of latest high accuracy electrical devices and systems. The PW8001 has 8 slots for power input units, which all can be used in combination with the motor analysis function.For the configuration of the PW8001, two types of input units are available that can freely be combined in one instrument according to the application requirements.The U7005 High Bandwidth input unit offers ultimate precision with ±0.03% basic accuracy, a sampling frequency of 15 MHz, 18-bit A/D conversion and a maximum input voltage of 1000 VAC. It is suitable for applications such as efficiency measurements of SiC and GaN based inverters motor drives, and accurate inductor loss measurement of inductors under load. Excellent resistivity for external noise of 110 dB at 100 kHz, ensure accurate and stable results even in the proximity to high frequency power switching semiconductors.
For high-voltage applications, the U7001 input unit provides ±0.07% basic accuracy, a maximum input voltage of 1500 VDC, a sampling frequency of 2.5 MHz, 16-bit A/D conversion and a maximum voltage to ground of 1500 VDC CAT II. It is a suitable unit for applications which need less bandwidth, such as testing of the efficiency of industrial motor drives using IGBTs, or wind turbines and PV power converters.
Combined with HIOKI’s extensive lineup of high-accuracy and high-bandwidth current sensors, probes and direct connection current boxes, the PW8001 offers a unique and comprehensive solution for reliably measuring applications from small electronic devices to large-scale power systems.
The PW8001 power analyzer and the current sensors are developed and produced by HIOKI, making the advanced automatic phase shift correction function possible. This ensures accurate phase angle measurement between the voltage and current, even at high frequencies and low power factors.
The PW8001 offers the unique Power Spectrum Analysis function. While the traditional FFT function determines the harmonics based on the fundamental frequency, limiting the frequency range, this new function covers the entire frequency spectrum of the analyzer. The Power Spectrum Analysis function delivers quick visibility into the high frequency power, providing developers with valuable data for further system efficiency improvements.
Other advanced functions like wideband harmonic analysis, and motor analysis, ensure precise and reliable power analysis results for a wide range of applications in the power electronics industry, such as the development of high efficiency power converters, electrical drivetrains and electrical motors.
The 1 ms update rate enables high-speed data refresh, allowing precise detection and analysis of rapid power fluctuations, such as those occurring during battery charging or discharging in EVs. This feature ensures unprecedented updates without compromising on measurement accuracy.
The optical link function allows the connection of two PW8001 power analyzers to increase the maximum number of measurement channels to 16. It enables synchronized power measurements and efficiency calculation from multiple inputs, optimizing measurement setup and eliminating timing differences in data collection because the sampling of all inputs is synchronized.
PW3390
PW3390 - Portable 4-channel Power Analyzer
Portable 4-channel Power Analyzer, ±0.09% basic accuracy, DC to 200 kHz measurement
band for power, 16-bit conversion, phase shift correction for HIOKI current sensors, 50 ms
data update rate, 16-ch waveform/analog output, motor analysis function, WLTP compliant Banner Specs: ±0.09% basic power accuracy 4 power channels 200 kHz measurement band for power50 ms data update rate 1500 V max. input voltage USPs: - Approved for WLTP testing - Small and lightweight 4-channel power analyzer with motor analysis Applications: WLTP testing Inverter efficiency measurements Motor efficiency measurements Solar power converter efficiency measurements
Model
D/A Output
Motor Analysis
PW3390-01
☐
☐
PW3390-02
☒
☐
PW3390-03
☒
☒
In detail:The HIOKI PW3390 Power Analyzer is a compact, lightweight, 4-channel high-precision
instrument designed to meet the demands of power and efficiency analysis across industries.
Equipped with advanced features, this analyzer excels in measuring and analyzing electrical
power and energy, making it an ideal solution for development, production, and field testing.Built for precision, the PW3390 delivers highly accurate power measurements with a basic
accuracy of ±0.09%, ensuring reliable data for various applications. Its 4 power channels
enable simultaneous multi-system evaluations with a frequency measurement band of up to
200 kHz for power.The instrument's harmonic analysis capabilities, featuring a data refresh time of 50 ms, allow
users to study transient states and evaluate noise or harmonic interference up to 100 kHz.With motor analysis functionality, the PW3390 is perfect for motor and inverter efficiency
evaluations. It provides measurements for torque, rotation speed, slip, and mechanical
power, enabling comprehensive performance analysis of industrial drives. Multiple PW3390 units can be connected to operate as a coordinated measurement system
with up to 32 channels. One unit serves as the primary controller, synchronizing the timing
across all devices to ensure simultaneous data acquisition. For long-term monitoring, the PW3390 can be equipped with the D/A output function, offering
a 16-channel analog output. The first 8 channels can be configured to output waveforms of
all voltage and current inputs at an update rate of 500 kS/s. The remaining 8 channels can be
assigned to numeric measurement values of basic parameters like U1, I2, and P4, with an
update rate of 20 S/s. The PW3390 is ideally suited for use in the automotive sector, particularly for efficiency
analyses of inverters in hybrid and electric vehicles, as well as for standardized testing
procedures to determine energy consumption like WLTP (Worldwide Harmonized Light
Vehicles Test Procedure). It also excels in renewable energy and power conversion
applications, providing precise input and output power data for power conditioners.Designed with a user-friendly interface and a rugged build, the HIOKI PW3390 ensures
intuitive operation and durability in industrial settings. Whether analyzing WLTP efficiency for
(H)EVs, transient power, harmonics, or inverter and motor efficiency, the HIOKI PW3390
delivers outstanding performance and accuracy
More than specs – find more details here:🔗 Zero-flux Current Clamps: Accuracy without effort from mA to kA
Manufacturing: Reliability and system integration
In production environments, quality and consistency are everything. Our power measurement instruments support your teams with dependable tools that simplify final checks, ensure compliance, and maintain process stability.
HIOKI PW333X Power Meters use the direct current input method, whereas the PW3390 Power Analyzers and the LR8102 Data Logger operate with high-accuracy current sensors. Here you can find out more about our precision current sensors.
Reliable, Cost-Effective Power Measurement
The PW333x Series is built for production line environments, offering easy integration and cost-effective, reliable power measurement across a full range of electrical equipment. They are ideal for applications, such as standby power testing, LED lighting evaluation, uninterruptible power supply evaluation, and quality inspections of household appliances.
Modular, Multi-channel Testing Solution
The LR8102 Data Logger, combined with the M7103 Power Module, enables long-term logging of up to 120 channels of voltage, current, power. Designed as a modular system, it integrates easily into production lines for MPPT inverter efficiency testing, power consumption analysis, and HVAC evaluation. As it also supports temperature measurement, providing a comprehensive view of both electrical and thermal performance.
| Model | 🔗 PW3335 Power Meter |
🔗 PW3336 Power Meter |
🔗 PW3337 Power Meter |
🔗 PW3390 Power Analyzer |
🔗 LR8102 Data Logger + M7103 Power Module |
|---|---|---|---|---|---|
| Channels | 1 | 2 | 3 | 4 | 12 |
| Bandwidth | 100 kHz | 200 kHz | 100 kHz | ||
| Power accuracy | 0.15 %* | 0.09 %* | 0.07 %* | ||
| Current measurement method | 20 A / direct |
50 A / direct |
2000 A / with current sensors |
||
* Instrument accuracy at 50/60 Hz
PW3335
PW3335 - POWER METER
The PW3335 is a single channel Power Meter offers high-precision measurement of power consumption in various electrical devices and installations. It is designed for efficiency testing and energy-saving assessments, with a maximum input current of 20 A. Featuring a 60,000-count display and wide measurement bandwidth, this power meter provides reliable accuracy across a variety of applications. The compact design and intuitive interface make it suitable for both laboratory and field use. Technical Information: Measurement Range: Voltage 100 mV to 1000 V, Current 1 mA to 20 A single phase / two wires measurement Frequency Range: DC, 0.1 Hz to 100 kHz Power Accuracy: ±0.1% of reading Measurement Bandwidth: 100 kHz Display: 60,000 counts Dimensions: 210 mm x 150 mm x 53 mm Weight: 1.2 kg Input Connectors: Voltage, Current, and External Sensor Inputs Safety Category: CAT II 1000 V
PW3336
PW3336 - AC/DC Power Meter
The PW3336 series measures power across a wide range of electrical equipment, from single-phase devices to industrial three-phase systems using 2 input channels. It supports voltages up to 1000 V, direct currents up to 65 A, and up to 5000 A with an optional current sensor. Covering both DC and inverter frequencies, it is ideal for motors, inverters, and power supplies, and is suitable for single-phase to 3P3W equipment. Technical Details: Compatible with SPECpower® benchmark for server power consumptionMeasures DC, single-phase 2-wire, and 3-phase 3-wire with 2-channel input High-precision basic accuracy of ±0.1% Frequency bandwidth of 0.1 Hz to 100 kHz or DCHigh-current measurement up to 65 A of direct inputHarmonic measurement up to the 50th order (IEC 61000-4-7) Accurate measurement with low power factor for no-load testing Built-in external sensor input terminals for up to 5000 A ACSynchronize up to 8 units for multi-unit measurement
PW3337
PW3337 - Power meter
The PW3337 Power Meter is a versatile and precise device designed to measure power consumption in three-phase and single-phase systems. It supports direct input up to 1000 V AC/DC and 65 A, making it ideal for analyzing energy consumption in industrial equipment, renewable energy systems, and power conditioners.With its wide frequency range, from DC to 100 kHz, and built-in harmonic measurement capabilities compliant with IEC61000-4-7 standards, the PW3337 offers reliable performance for both AC and DC power measurements. Its advanced communication interfaces, including LAN, RS-232C, and GP-IB, make it suitable for automated testing environments and real-time monitoring. Technical Information:Number of Channels: 3 (AC/DC) Measurement Ranges:
o Voltage: 15 V to 1000 V
o Current: 200 mA to 65 A Frequency Range: DC, 0.1 Hz to 100 kHz Basic Accuracy: ±0.1% of readingHarmonic Measurement: IEC61000-4-7 compliant Interfaces: LAN, RS-232C, GP-IB (model dependent) Maximum Rated Power: 40 VA Dimensions: 305 mm (W) × 132 mm (H) × 256 mm (D) Weight: Approx. 5.6 kg
PW3390
PW3390 - Portable 4-channel Power Analyzer
Portable 4-channel Power Analyzer, ±0.09% basic accuracy, DC to 200 kHz measurement
band for power, 16-bit conversion, phase shift correction for HIOKI current sensors, 50 ms
data update rate, 16-ch waveform/analog output, motor analysis function, WLTP compliant Banner Specs: ±0.09% basic power accuracy 4 power channels 200 kHz measurement band for power50 ms data update rate 1500 V max. input voltage USPs: - Approved for WLTP testing - Small and lightweight 4-channel power analyzer with motor analysis Applications: WLTP testing Inverter efficiency measurements Motor efficiency measurements Solar power converter efficiency measurements
Model
D/A Output
Motor Analysis
PW3390-01
☐
☐
PW3390-02
☒
☐
PW3390-03
☒
☒
In detail:The HIOKI PW3390 Power Analyzer is a compact, lightweight, 4-channel high-precision
instrument designed to meet the demands of power and efficiency analysis across industries.
Equipped with advanced features, this analyzer excels in measuring and analyzing electrical
power and energy, making it an ideal solution for development, production, and field testing.Built for precision, the PW3390 delivers highly accurate power measurements with a basic
accuracy of ±0.09%, ensuring reliable data for various applications. Its 4 power channels
enable simultaneous multi-system evaluations with a frequency measurement band of up to
200 kHz for power.The instrument's harmonic analysis capabilities, featuring a data refresh time of 50 ms, allow
users to study transient states and evaluate noise or harmonic interference up to 100 kHz.With motor analysis functionality, the PW3390 is perfect for motor and inverter efficiency
evaluations. It provides measurements for torque, rotation speed, slip, and mechanical
power, enabling comprehensive performance analysis of industrial drives. Multiple PW3390 units can be connected to operate as a coordinated measurement system
with up to 32 channels. One unit serves as the primary controller, synchronizing the timing
across all devices to ensure simultaneous data acquisition. For long-term monitoring, the PW3390 can be equipped with the D/A output function, offering
a 16-channel analog output. The first 8 channels can be configured to output waveforms of
all voltage and current inputs at an update rate of 500 kS/s. The remaining 8 channels can be
assigned to numeric measurement values of basic parameters like U1, I2, and P4, with an
update rate of 20 S/s. The PW3390 is ideally suited for use in the automotive sector, particularly for efficiency
analyses of inverters in hybrid and electric vehicles, as well as for standardized testing
procedures to determine energy consumption like WLTP (Worldwide Harmonized Light
Vehicles Test Procedure). It also excels in renewable energy and power conversion
applications, providing precise input and output power data for power conditioners.Designed with a user-friendly interface and a rugged build, the HIOKI PW3390 ensures
intuitive operation and durability in industrial settings. Whether analyzing WLTP efficiency for
(H)EVs, transient power, harmonics, or inverter and motor efficiency, the HIOKI PW3390
delivers outstanding performance and accuracy
More than specs – find more details here:🔗 Zero-flux Current Clamps: Accuracy without effort from mA to kA
LR8102
LR8102 - Modular multi-channel Data Logger for system integration, optical sync, UDP, CAN
The versatile, modular data logger LR8102 can be used in combination with a variety of modules. It is therefore the perfect solution for integration in applications requiring multiple channels and recording intervals as short as 5 ms.
M7103
M7103 - 3-channel power measurement module for LR810x Data Logger Series
Power measurement module for LR8101 and LR8102 Data Logger, up to 1500 VDC, CATII
and 2000 A, 3 power channels, max. update interval 5 ms, DC to 100 kHzBanner Specs: Up to 12 / 120 power channels Power accuracy: 0.02% rdg. ± 0.05% f.s. 1500 VDC / 1000 VAC, CATII 5 ms update interval DC to 100 kHz bandwidth USPs: Multi-channel power measurement with the accuracy of a top-end power analyzer Guaranteed high accuracy up to 1500 VDC, CATII Combine with wide variety of HIOKI current sensors with ratings from 2 A to 2000 ASpace-efficient multi-channel setup Easily expand channels on site with growing production line requirements Applications: Power measurement applications requiring higher number of channels Development of Photovoltaic (PV) string inverters Quality inspection of PV string inverters during productionCharge/discharge testing during development of battery modules and battery packsIn detail: The M7103 power measurement module for LR810x data loggers offers three channels for
highly accurate power logging. One LR8101 or LR8102 Data Logger in combination with the
M1100 AC power supply module supports up to four M7103 modules, giving the user the ability
to log up to 12 power channels simultaneously with one logger. Up to 120 power channels can
be recorded by synchronizing multiple LR8102 Data Logger. The voltage input channels are designed for direct input of voltages of up 1500 VDC or 1000
VAC, CATII making the M7103 ideal for safe and reliable production line testing. All HIOKI highprecision current sensors with an ME15W connector can be combined with the M7103 power measurement module, offering users the flexibility to choose the ideal current sensor for their
specific application. With an update interval of just 5 ms, the module enables detailed logging
of power, voltage, or current with exceptional precision.The sync source sharing feature ensures precise efficiency measurement by using the AC
signal's zero-crossing for calculation to synchronize a primary module with secondary
modules, making the system ideal for high-accuracy applications like quality inspection in PV
string inverter production. This highly flexible logger system offers the possibility to easily
expand channels on-site without the necessity to return the equipment to the factory, saving
valuable time.
🎞️ Mastering Power Measurement – Key Specs to get it right
- What exactly are you measuring? – Voltage, power factor, torque, slip, or speed?
- How many channels do you need? – 4, 8, or 120 with a synchronized setup?
- What’s your required frequency range? – 2 kHz for grid power or 1 MHz for fast inverters?
- What level of power accuracy do you need? – And which instrument and sensor combination can deliver it?
-> Hit play and get the insights you need to measure with confidence.
Maintenance: Compact & easy-to-use power tools.
Power loggers: understand actual power consumption
Understanding real-world power consumption is crucial for reliability, maintenance, and energy-saving efforts. These compact, easy-to-use power loggers synchronize with 50/60 Hz supplies, analyze harmonics up to the 40th order, and visualize noise and distortion, making them ideal for on-site inspections, energy consumption monitoring, and troubleshooting. HIOKI power loggers perform current measurements, using external sensors for flexible, accurate monitoring.
Learn more about suitable current sensors here.
| Model | 🔗 PW3360-20 Clamp-on Power Logger |
🔗 PW3360-21 Clamp-on Power Logger |
🔗 PW3365 Clamp-on Power Logger |
|---|---|---|---|
| Supported wiring | 1P2W(x 3), 1P3W, 3P3W, 3P4W (50/60 Hz only) |
||
| Harmonics measurement | None | Up to 40th order | Up to 13th order |
| Voltage measurement method | Metal contact | Contactless | |
| Power accuracy) | 0.4 %* | 2.3 %* | |
* Instrument accuracy at 50/60 Hz
PW3360-20
PW3360-20 - CLAMP ON POWER LOGGER
The HIOKI PW3360-20 is a compact 3-phase, 4-wire energy logger that monitors power demand and parameters, ideal for energy audits and validating savings. Banner Specs: Supports single to three-phase, 4-wire circuits or simultaneously measures up to three single-phase, 2-wire circuits A basic accuracy of ±0.3% rdg. ±0.1% f.s (voltage, current, active power) Measures voltage from 90V to 780V Current from 500mA to 5.000kA (with the right sensor) A Power range from 300.00 W to 9.0000 MW Stores months of data on SD cards QUICK SET function ensures correct connections Available interfaces: SD/SDHC memory card, LAN, USB 2.0 HTTP server function
PW3360-21
PW3360-21 - CLAMP ON POWER LOGGER
The HIOKI PW3360-21 is a compact 3-phase, 4-wire energy logger that monitors power demand and parameters, ideal for energy audits and validating savings. Technical Details: Supports single to three-phase, 4-wire circuits or simultaneously measures up to three single-phase, 2-wire circuits A basic accuracy of ±0.3% rdg. ±0.1% f.s (voltage, current, active power) Measures voltage from 90V to 780V
• Current from 500mA to 5.000kA (with the right sensor) A Power range from 300.00 W to 9.0000 MW Stores months of data on SD cards QUICK SET function ensures correct connections harmonic measurements up to the 40th order Available interfaces: SD/SDHC memory card, LAN, USB 2.0 HTTP server function
PW3365-20
PW3365 - Non-contact power logger with voltage and current sensors
Non-contact 3-phase 4-wire Clamp-on Power Logger, 90 V to 520 V at 50/60 Hz, 50 mA to 5 kA using external current sensors, harmonic measurement up to the 13th order, SD memory card slot (max. 8 GB), LAN and USB interface
Power quality analyzers: For field diagnostics and troubleshooting
When an abnormality is reported in a product in the field, it is essential to determine whether the issue is caused by a malfunction in the equipment itself or by anomalies in the power supply at the site of use. A Power Quality Analyzer (PQA) can capture a wide range of power disturbances such as dips, swells, momentary outages, and transients, making it possible to identify issues originating from the power supply. It is the ideal power measurement tool for on-site troubleshooting.
| Model |
🔗 PQ3100 Power Quality Analyzer |
🔗 PQ3198 Power Quality Analyzer |
|---|---|---|
| Supported wiring | 1P2W, 1P3W, 3P3W, 3P4W (50/60 Hz only), DC, 1 power line | 1P2W, 1P3W, 3P3W, 3P4W (50/60/400 Hz only), DC, 2 power line |
| Harmonics measurement | Up to 50th order | Up to 50th order (Higher frequency from 2 kHz to 80 kHz) |
| IEC 61000-4-30 Ed,3 Class* | Class S | Class A |
| Power accuracy | 0.3 %* | |
* Instrument accuracy at 50/60 Hz
**According to IEC 61000-4-30 Ed.3, Class A offers higher accuracy and reliability in power quality measurements compared to Class S. It requires strict measurement procedures, precise time synchronisation and a wider range of parameters, making it suitable for international comparisons and detailed analyses. In contrast, Class S is designed for basic monitoring with limited accuracy and fewer functions.
PQ3100-94
PQ3100-94 - Power quality measuring device with 4 flexible current transformers
The PQ3100-94 Kit builds on the PQ3100, combining its powerful capabilities with essential accessories for high-current measurements. This complete solution includes 4 CT7045 Flexible Current Sensors, enabling precise measurements up to 6000 A. The PQ3100’s intuitive setup, extensive waveform recording, and compliance with IEC61000-4-30 Class S make it perfect for professionals who demand accuracy and reliability in power quality analysis. Whether for EV charging stations, renewable energy systems, or industrial equipment, the PQ3100-94 Kit ensures you’re equipped for every challenge in high-power electrical environments. Technical Details:Measurement Channels: 4 voltage channels, 4 current channels Voltage Measurement Range: 1 V to 1000 V AC/DC, ±6000 V peak Current Measurement Range: Up to 6000 A (with appropriate current sensors) Frequency Range: DC, 0.1 Hz to 700 kHz Basic Accuracy: Voltage ±0.2%, Current ±0.2% (with sensor) Event Detection: Transients, voltage fluctuations, harmonics, inrush currents Compliance: IEC61000-4-30 Class S Waveform Recording: Up to 11 seconds for detailed event analysis Display: 6.5-inch TFT color LCD Data Storage: Internal memory and SD card support Power Supply: AC Adapter Z1002, Battery Pack Z1003 (up to 3 hours operation) Dimensions: 264 mm (W) × 150 mm (H) × 68 mm (D) Weight: 2.6 kg
PQ3198-94
PQ3198-94 - Power quality analyser kit with 4 flexible current clamps
The PQ3198-94 kit is based on the PQ3198 including its standard accessories plus all necessary additional accessories that enable professionals to perform high current measurements up to 6000 A in high power electrical systems. It offers a complete solution for monitoring and analyzing power quality. The PQ3198 main unit supports both AC and DC measurements, complies with the IEC61000-4-30 Class A standard and measures voltage fluctuations, transients, harmonics and inrush currents. Ideal for applications in renewable energy systems, electric vehicle charging stations and power controllers, the analyzer with its 4 isolated voltage channels enables simultaneous measurements across multiple circuits. Technical details:Measuring channels: 4 voltage channels, 4 current channels Voltage measuring range: 1 V to 1000 V AC/DC, ±6000 V peak Current measuring range: Up to 6000 A (with suitable current sensor) Frequency range: DC, 0.1 Hz to 700 kHz Basic accuracy: Voltage ±0.1 %, current ±0.1 % (with sensor) Event detection: transients, voltage increases, voltage drops, interruptions, frequency fluctuations Standard compliance: IEC61000-4-30 Class A Display: 6.5-inch TFT colour display Power supply: AC adapter Z1002, battery packs Z1003 (up to 3 hours operation)Dimensions: 264 mm (W) × 150 mm (H) × 68 mm (D)
- Weight: 2.6 kgTechnical details PQ3198-94 Kit: Flexible current sensors (CT7045): Rated measuring current: 6000 A AC Measuring range: 600 A / 6000 A ACMax. permissible input: 10000 A continuous (at 6000 A, 45 to 66 Hz, requires derating) Bandwidth: 10 Hz to 50 kHz (±3 dB) Accuracy: ±1.5 % F.S., ±0.25 % F.S.Max. rated voltage to earth: 600 V (CAT IV), 1000 V (CAT III) Loop diameter: 180 mmOutput connection: Hioki PL14 Operating temperature: -25°C to 65°C
Proven solutions for real-world applications
Wide bandgap power converter and inverter analysis
PMSM* analysis
✅ PW8001 Power Analyzer for assessment of motor characteristics under actual operating conditions
*Permanent Magnetic Synchronous Motor
Grid monitoring & maintenance
Renewable energy power converter production
✅ LR8102 Data Logger with M7103 for multi-channel, expandable solution for power and accurate efficiency calculation; for up to 1500 VDC
✅ PW3390 Power Analyzer for efficiency measurement; up to 1000 VDC
✅ PW3337 Power Meter for voltage and current measurement of individual strings
Industrial HVAC efficiency monitoring
Where has all the power gone?
Are your power readings telling the full story – or just part of it?
In real-world measurement scenarios, even small oversights in setup can lead to significant deviations. This article explores the critical factors that can -often unnoticed- compromise power accuracy measurements. Discover how phase shift, the choice of the right sensors and test conditions can put you on the right track to identifying your hidden power losses.
From Clamp-On Convenience to Top-Level Accuracy
Sensors Developed for Current Measurement
We offer a variety of current measurement methods to suit different applications—from high-accuracy lab testing to fast, on-site power logging. Each method comes with its own advantages in terms of accuracy, setup, and compatibility for specific instruments. Here’s a compact overview of the most important current sensor types and their features – from pass-through sensors to clamp-on models.
Current sensors for PW8001, PW3390 and LR8102
High-accuracy Pass-through Current Sensors
Highest accuracy for usage in inverter efficiency evaluation and inductor/transformer loss evaluation.
- Excellent basic accuracy ±0.02 % rdg.
- High noise resistance: CMRR ≥ 120 dB (100 kHz)
- Excellent phase characteristics ±0.08° (50/60 Hz)
- Wide bandwidth DC to 10 MHz
CT6862-05
CT6862-05 - AC/DC Current Sensor, Fluxgate, 50 A / 1 MHz
The CT6862-05 is a pass-through AC/DC current sensor designed for precision power measurement in industrial environments. It features a wide frequency range and low phase shift, making it highly suitable for accurate waveform observation and harmonic analysis. Technical Details: Current Rating: 50 A AC/DC Frequency Range: DC to 1 MHz Accuracy: ±0.05% rdg, ±0.01% f.s. Maximum Conductor Diameter: 24 mm Operating Temperature: -30°C to 85°C Input Impedance Requirement: 1 MΩ or higher
CT6863-05
CT6863-05 - closed current transformer
The CT6872 is a high-precision AC/DC current sensor designed for detailed waveform observation and harmonic analysis. With a frequency range of up to 10 MHz, it is ideal for high-frequency power electronics testing.
It supports automatic phase shift correction (APSC). Technical Details: Current Rating: 50 A AC/DC Frequency Range: DC to 10 MHz Accuracy: ±0.03% rdg, ±0.002% f.s. Maximum Conductor Diameter: 24 mm Operating Temperature: -40°C to 85°C
• Input Impedance Requirement: 1 MΩ or higher
CT6872
CT6872 - AC/DC Current Sensor, Fluxgate, 50 A / 10 MHz
The CT6872 is a high-precision AC/DC current sensor designed for detailed waveform observation and harmonic analysis. With a frequency range of up to 10 MHz, it is ideal for high-frequency power electronics testing.
It supports automatic phase shift correction (APSC). Technical Details: Current Rating: 50 A AC/DC Frequency Range: DC to 10 MHz Accuracy: ±0.03% rdg, ±0.002% f.s. Maximum Conductor Diameter: 24 mm Operating Temperature: -40°C to 85°C Input Impedance Requirement: 1 MΩ or higher
CT6873
CT6873 - AC/DC Current Sensor, Fluxgate, 200 A / 10 MHz
The CT6873A is an advanced current sensor that provides high-precision AC/DC current measurements for power analysis applications. Its wide frequency range and excellent phase accuracy make it suitable for complex waveform and harmonic studies.
It supports automatic phase shift correction (APSC).Technical Details Current Rating: 200 A AC/DC Frequency Range: DC to 10 MHz Accuracy: ±0.03% rdg, ±0.002% f.s. Maximum Conductor Diameter: 24 mm Operating Temperature: -40°C to 85°C Input Impedance Requirement: 1 MΩ or higher
CT6875A
CT6875A - AC/DC Current sensor
The CT6875 AC/DC Current Sensor is designed for accurate current measurements across a broad frequency range, from DC to 2 MHz (Model CT6875-01: DC to 1.5 MHz). With a rated current of 500 A, it is ideal for R&D, quality evaluation, manufacturing, and maintenance in industries such as wireless charging systems, inverter motors, PV power conditioners, and EV quick charging facilities. In combination with the Power Analyzer PW8001, the sensor allows for precise high-frequency and low power factor measurements. Technical Details: Rated Current: 500 A Frequency Bandwidth: CT6875: DC to 2 MHzBasic Accuracy: Amplitude: ±0.04 % rdg. ±0.008 % f.s., Phase: ±0.08° Maximum Conductor Diameter: 36 mm Maximum Rated Voltage to Ground: 1000 V CAT III Operating Temperature: -40°C to 85°C Input Impedance Requirement: 1 MΩ or higher Output Terminal: ME15W Cable length: 3m
CT6877A
CT6877A - AC/DC-Current sensor
Hioki's pass-through AC/DC current sensors are premium devices for use with power meters, memory HiCorders and high performance oscilloscopes.
CT6904A
CT6904A - High-precision AC/DC current sensor, 500 A / 4 MHz
High-accuracy pass-through AC/DC current sensor, zero-flux detection with flux gate technology, currents up to 500 A, bandwidth from DC to 4 MHz, CMRR of 120 dB at 100 kHz, linearity ±5 ppm, 3 m cable length with ME15W connector
AC/DC Precision Current Clamps
High precision and easy to clamp even in tight spaces like for xEVs WLTP testing.
- Very good basic accuracy: ±0.07% rdg.
- Quick and easy installation
- Wide bandwidth DC to 2 MHz
- Wide Operating temperature range: -40°C to 85°C
CT6834
CT6834 - Super-slim AC/DC high-accuracy Current Clamp, 500 A / 50 kHz
Ultra-slim AC/DC current clamp using advanced fluxgate technology, 500 A rated current, DC to 50 kHz frequency bandwidth, high accuracy ±0.07% rdg., wide temperature range of -40°C to +85°C, maximum conductor diameter 20 mm, cable length 5 m
CT6833
CT6833 - Super-slim AC/DC high-accuracy Current Clamp, 200 A / 50 kHz
Ultra-slim AC/DC current clamp using advanced fluxgate technology, 200 A rated current, DC to 50 kHz frequency bandwidth, high accuracy ±0.07% rdg., wide temperature range of -40°C to +85°C, maximum conductor diameter 20 mm, cable length 5 m
CT6841A
CT6841A - AC/DC High-accuracy Current Clamp, 20 A / 2 MHz
AC/DC current clamp using advanced fluxgate technology, 20A rated current, basic accuracy ±0.2% rdg., wide temperature range of -40 °C to 85 °C, wide bandwidth from DC to 2 MHz, maximum conductor diameter 20 mm, cable length 3 m
CT6843A
CT6843A - AC/DC High-accuracy Current Clamp, 200 A / 700 kHz
AC/DC current clamp using advanced fluxgate technology, 200A rated current, basic accuracy ±0.2% rdg., wide temperature range of -40 °C to 85 °C, wide bandwidth from DC to 700 kHz, maximum conductor diameter 20 mm, cable length 3 m
CT6844A
CT6844A - AC/DC High-accuracy Current Clamp, 500 A / 500 kHz
AC/DC current clamp using advanced fluxgate technology, 500A rated current, basic accuracy ±0.2% rdg., wide temperature range of -40 °C to 85 °C, wide bandwidth from DC to 500 kHz, maximum conductor diameter 20 mm, cable length 3 m
CT6845A
CT6845A - AC/DC Current Clamp, Fluxgate, 500 A / 200 kHz
AC/DC current clamp using advanced fluxgate technology, 500A rated current, basic accuracy ±0.2% rdg., wide temperature range of -40 °C to 85 °C, bandwidth from DC to 200 kHz, maximum conductor diameter 50 mm, cable length 3 m
CT6846A
CT6846A - AC/DC High-accuracy Current Clamp, 1000 A / 100 kHz
AC/DC current clamp using advanced fluxgate technology, 1000A rated current, basic accuracy ±0.2% rdg., wide temperature range of -40 °C to 85 °C, bandwidth from DC to 100 kHz, maximum conductor diameter 50 mm, cable length 3 m
CT6830
CT6830 - Ultra-compact AC/DC Current Probe, 2 A / 100 kHz
Ultra-small, zero-flux clamp-on AC/DC Current Probe using flux gate detection, high accuracy ±0.3 % rdg., wide temperature range -40 to 85 oC, measurable current from 100 µAup to 2 A, ME15W connector
CT6831
CT6831 - Ultra-compact AC/DC Current Probe, 20 A / 100 kHz
Ultra small zero flux clamp-on AC/DC Current Probe using flux gate detection, high accuracy ±0.3 % rdg., wide temperature range -40 to 85 oC, measurable current from 1 mAup to 20 A, ME15W connector
Current clamps for Clamp-on Power Loggers PW3360 and PW3365
AC Current Clamps
Rugged current clamp for AC measurement such as checking the power consumption of factory equipment or facilities.
- Good basic accuracy ±0.3% rdg
- Quick and easy setup
- Bandwidth 40 Hz to 5 kHz
- BNC connector with voltage output
9660
9660 - CLAMP ON SENSOR
The 9660 Clamp On Sensor is designed for measuring AC currents with a rated measurement range of 100A.
It is commonly used with power quality analyzers, power meters, and similar devices for load current measurements.
With its compact design the sensor fits into narrow spaces and is ideal for use in commercial power lines and inverter devices. Technical Details: Measurement range: 100A AC (max continuous 130A, 45-66 Hz) Output rate: 1 mV AC per A Accuracy: ±0.3% of reading (45-66 Hz) Phase accuracy: ±1° (45 Hz to 5 kHz) Connector type: BNC Cable length: 3 meters Measurement category: CAT III 300VAC Max. core diameter: 15 mm
9661
9661 CLAMP ON SENSOR
The Hioki 9661 Clamp-On Sensor is designed to measure AC current up to 500 A with high precision. It features a voltage output, making it ideal for use with recorders or other instruments. The compact design with a 46 mm conductor diameter capacity ensures flexibility in various electrical environments. The sensor is robust, complying with CAT III 600V safety standards, making it safe for use in industrial settings. Technical Details: Rated current: AC 500 A Output rate: AC 1 mV/A Amplitude accuracy: ±0.3% rdg. ±0.01% f.s. (500 A, 45 Hz - 66 Hz, at jaw center) Phase accuracy: ±0.5° (45 Hz - 5 kHz) Frequency range: 40 Hz - 5 kHz Maximum current: 550 A (continuous) Dielectric strength: AC 7060 V (for 1 minute)Conductor diameter: 46 mm or less Operating temperature: 0°C to 50°C (80% RH or lower, non-condensing) Storage temperature: -10°C to 60°C Safety standards: EN61010, CAT III 600V Dimensions: 78 W x 152 H x 42 D mm Weight: Approx. 380 g
• Cable length: 3 m
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CT9667-01
CT9667-01 - AC FLEXIBLE CURRENT SENSOR
The CT9667-01 is a flexible AC current sensor that allows easy measurement of large conductors and cables. Its flexibility makes it ideal for confined spaces or irregular shapes.Technical Details: Rated current: 500 A, 5000 A AC Frequency range: 10 Hz to 20 kHz Amplitude accuracy: ±2% rdg, ±0.3% f.s. Diameter of conductors: 100 mm (3.94 in.) Cable length: 2 m, 1 m² (6.56 ft., 3.28 ft.) Operating temperature: -25°C to 65°C (-13°F to 149°F) CAT: 600 V CAT IV, 1000 V CAT III Output terminal: BNC
Current clamps for Power Quality Analyzers PQ3100 and PQ3198
AC & AC/DC Current Clamps
AC and AC/DC current clamps, ideal for diagnosing power anomalies and basic verification of DC EV charger efficiency.
- Good basic accuracy ±0.3% rdg.
- Quick and easy setup
- Bandwidth DC to 10 kHz
- Operating temperature range: -25℃ to 65℃
- PL14 connector combining power supply and auto range recognition
CT7731
CT7731 - AC/DC Current Probe
The Hioki CT7731 is a versatile AC/DC current sensor designed for accurate measurements up to 100 A. With a wide frequency range from DC to 5 kHz, it is perfect for waveform analysis and real-time monitoring in various applications. The CT7731’s compact design and 33 mm conductor diameter allow for easy installation in confined spaces. It features high precision with an accuracy of ±1.0% for DC measurements and ensures reliable performance in fluctuating temperature conditions. The sensor is compatible with Hioki's Memory Memory recorder and data loggers for efficient data collection and analysis. Technical Information: Measurement range: 100 A AC/DC Frequency range: DC to 5 kHz Maximum conductor diameter: 33 mm Accuracy: ±1.0% for DC (45 Hz to 66 Hz) Operating temperature: −25°C to 65°C Safety category: CAT III 1000 V / CAT IV 600 V Output connector: HIOKI PL14
CT7736
CT7736 - AC/DC current clamp
The Hioki CT7736 is a high-performance AC/DC current sensor capable of measuring currents up to 600 A. With a frequency range from DC to 5 kHz, it is ideal for waveform analysis and high-current applications. The sensor features a compact design with a 33 mm conductor diameter, making it easy to install in various environments.Offering high accuracy of ±2.0% for DC measurements, the CT7736 is built for stable performance in fluctuating temperatures. It is compatible with Hioki's Memory Recorders and data loggers for precise and efficient data collection. Technical Information: Measurement range: 600 A AC/DCFrequency range: DC to 5 kHz Maximum conductor diameter: 33 mm Accuracy: ±2.0% for DC (45 Hz to 66 Hz) Operating temperature: −25°C to 65°CSafety category: CAT III 1000 V / CAT IV 600 V Output connector: HIOKI PL14
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CT7742
CT7742 - AC/DC AUTO-ZERO CURRENT SENSOR
The CT7742 is an advanced AC/DC current sensor with auto-zero functionality, providing stable and precise measurements over time by compensating for offset drift. Technical Details: Rated current: 2000 A AC/DC Frequency range: DC to 5 kHz Amplitude accuracy: ±1.5% rdg, ±0.5% f.s. Diameter of conductors: 55 mm (2.17 in.) Cable length: 2.5 m (8.2 ft.) Operating temperature: -25°C to 65°C (-13°F to 149°F) CAT: IV 600 V, CAT III 1000 V Output terminal: PL14
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CT7044
CT7044 - AC FLEXIBLE CURRENT SENSOR
The CT7044 AC Flexible Current Sensor is ideal for measuring high currents over a wide frequency range. It features a flexible design with a 100 mm diameter, making it suitable for large conductors in tight spaces. Technical Details: Rated current: 6000 A AC Frequency range: 10 Hz to 50 kHz Amplitude accuracy: ±1.5% rdg, ±0.25% f.s. Diameter of conductors: 100 mm (3.94 in.) Cable length: 2.3 m, 0.2 m³ (7.55 ft., 0.66 ft.) Operating temperature: -25°C to
65°C (-13°F to 149°F) CAT: IV 600 V, III 1000 V Output terminal: PL14
CT7045
CT7045 - AC flexible current transformer
AC flexible Current Sensor, 10 Hz to 50 kHz (+/-3dB), 6000A AC, 180 mm diameter, PL14 terminal
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CT7046
CT7046 - AC FLEXIBLE CURRENT SENSOR
CT7046 - AC Flexible Current Sensor
The CT7046 AC Flexible Current Sensor is designed for high-current measurements with a larger diameter to accommodate broader conductors. It provides reliable performance over a wide frequency range. Technical Details: Rated current: 6000 A AC Frequency range: 10 Hz to 50 kHz Amplitude accuracy: ±1.5% rdg, ±0.25% f.s. Diameter of conductors: 254 mm (10.00 in.) Cable length: 2.3 m, 0.2 m³ (7.55 ft., 0.66 ft.) Operating temperature: -25°C to 65°C (-13°F to 149°F) CAT: IV 600 V, III 1000 V Output terminal: PL14
CT7126
CT7126 - AC Current Probe
The CT7126 AC Current Sensor is a compact, reliable solution for accurate AC current measurement. Ideal for power measurement and analysis, the sensor is designed to meet the needs of various industrial applications. Its compact form factor allows for easy handling, while its durable construction ensures precise and consistent performance. Technical Specifications: Measurement Range: 60 A AC Frequency Range: 40 Hz to 5 kHzBasic Accuracy: ±0.3% rdg. ±0.01% f.s. Maximum Conductor Diameter: 15 mm Operating Temperature: -10°C to 50°C Cable Length: 2.5 m Safety Category: 300 V CAT III Output connector: Hioki PL14 Connector
CT7131
CT7131 - AC Current Probe
The CT7131 AC Current Sensor is a versatile tool designed for accurate AC current measurements in various industrial applications. With a measurement range of up to 100 A, it provides reliable and precise performance for power analysis and current monitoring. Its compact design ensures easy handling and integration with Hioki measuring instruments, making it ideal for professionals seeking dependable measurement solutions. Technical Specifications: Measurement Range: 100 A ACFrequency Range: 40 Hz to 5 kHz Basic Accuracy: ±0.3% rdg.±0.02% f.s. Maximum Conductor Diameter: 15 mm Operating Temperature: -10°C to 50°C Cable Length: 2.5 mSafety Category: 300 V CAT III Output Connector Type: Hioki PL14 connector
CT7136
CT7136 - AC Current Probe
The CT7136 AC Current Sensor is designed for high-accuracy current measurements up to 600 A, making it ideal for industrial applications where large currents and high precision are required. Its robust build and wide frequency range ensure reliable performance, even in demanding environments. The sensor easily integrates with Hioki measuring instruments, allowing for seamless data collection and analysis. Technical Specifications: Measurement Range: 600 A ACFrequency Range: 40 Hz to 5 kHz Accuracy / Amplitude Accuracy: ±0.3% rdg. ±0.01% f.s. Maximum Conductor Diameter: 46 mm Operating Temperature: -10°C to 50°C Cable Length: 2.5 m Safety Category: 1000 V CAT III, 600 V CAT IV Output Connector Type: Hioki PL14 connector
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CT7116
CT7116 - AC LEAKAGE CURRENT SENSOR
The CT7116 is designed for precise leakage current measurements with high accuracy. It supports BNC conversion for versatile applications. Technical Details: Rated current: 6 A AC Frequency range: 40 Hz to 5 kHz Amplitude accuracy: ±1.0% rdg, ±0.05% f.s. Diameter of conductors: 40 mm (1.57 in.) Cable length: 2.5 m (8.20 ft.) Operating temperature: -25°C to 65°C (-13°F to 149°F) Output terminal: PL14
