HIOKI PW8001 Power Analyser

Designed and Manufactured in Japan to ensure High Quality Measurements

High Precision 8 Channel Power Analyser for Motor and Inverter Efficiency Analysis

  • DC, 0.1 Hz to 5 MHz, 3-phase 4-wire
  • Compatible with Gennect One Software with ease of computer monitoring and recording
  • Custom built with your choice of input modules, voltage cords and current sensors

Please enquire with your full requirements and we will tailor a suitable solution!



Read full description and specs


The PW8001 sets a new benchmark for complete power analysis solutions with Hioki being the only manufacturer that offers industry-leading power analysers and a wide portfolio of high-accuracy current sensors both developed and manufactured by Hioki.

This enables to align their performance and results in more accurate and stable measurements from DC to high frequencies and low power factor measurements thanks to functions like the automatic phase shift correction.

Upcoming industry challenges are anticipated with the ability to measure even large currents at voltages up to 1500 V, 15 MS/s sampling rate and multi-channel measurement target applications using SiC/GaN semiconductors from automobile electrification, smart grids and reactors to renewable energy supply sources.

World-Class Measurement Accuracy

– Basic Accuracy ±0.03%, DC Accuracy ±0.05%, 50 kHz Accuracy 0.2% (*1)

Evaluating power conversion efficiency requires the ability to accurately measure power in every band, from DC to high frequencies.

The PW8001 delivers exceptional measurement accuracy not only for 50/60 Hz, but also across a broad frequency band, including for DC and at 50 kHz.

This allows it to accurately evaluate power conversion efficiency which often involves measuring multiple frequencies.

Accurate Capture of Power Fluctuations caused by High-Speed Switching

– Sampling Performance 18-bit, 15 MHz (*1)
– Noise Resistance (CMRR) 110 dB, 100 kHz* (*1)

Up to 8 Power Channels Optimising your Measurement

– 8-Channel Power Measurement

Increasingly, hardware like electric vehicle (EV) drive systems that use dual inverters and electric power interchange systems in smart homes are adopting multi-circuit designs in order to utilise energy effectively.

A single PW8001 can measure 8 channels of power data, allowing equipment with 8 measurement points for power such as dual motors as well as other equipment with multiple circuits to be evaluated in one stroke.

Compensation of Torque Meter Measurement Error (*2)

– Dual torque value correction functions

Torque meter measurement error has a substantial impact on motor analysis.

The PW8001 can perform calculations using a correction table based on user-defined values for nonlinear compensation and friction compensation. The instrument can accurately analyze high-efficiency motors as well.

Safe Evaluation of Increasingly High-Voltage Power Conditioners

– 1500 V DC CAT II, 1000 V DC CAT III (*3)

Renewable energy generation systems are being engineered to use increasingly high voltages in order to reduce equipment construction costs and transmission loss.

Evaluating generation systems requires instruments that are capable of high-voltage measurement.

The PW8001 Input Unit U7001 can safely measure directly input high voltages of up to 1500 V DC (CAT II) and 1000 V DC (CAT III). (The Voltage Cord L1025, which can accommodate 1500 V DC [CAT II] and 1000 V DC [CAT III], is also available.)


PW8001 feature image


Analysis of Power Loss in Reactors

– High-accuracy measurement of high-frequency, low-power-factor power
In order to improve power conversion efficiency, it’s necessary to assess power loss in reactors.

The lower the reactor’s loss, the lower the power factor, making accurate measurement difficult.

The U7005’s outstanding high-frequency characteristics and noise resistance make it an extremely effective tool for analysing power loss in high-frequency, low-power-factor reactors.


PW8001 feature image

  • *1:When using the 15MS/S Input Unit U7005
  • *2:Models equipped with motor analysis function only
  • *3:When using the 2.5MS/S Input Unit U7001

Basic Specifications

Accuracy guaranteed: 6 months, Accuracy guarantee period after adjustment made by Hioki: 6 months
Measurement lines 1-phase-2-wire, 1-phase-3-wire, 3-phase-3-wire, 3-phase-4-wire
No. of PW8001 input units Max. 8 units (mix and match)
Type of input unit U7001 2.5 MS/s INPUT UNIT
U7005 15 MS/s INPUT UNIT
Measurement frequency band U7001: DC, 0.1 Hz to 1 MHz
U7005: DC, 0.1 Hz to 5 MHz
Sampling U7001: 2.5 MHz, 16-bit
U7005: 15 MHz, 18-bit
Data update rate 10 ms, 50 ms, 200 ms
Accuracy for power (U7001) 50/60 Hz: 0.02% of reading + 0.05% of range
DC: 0.02% of reading + 0.05% of range
50 kHz : 0.4% of reading + 0.1% of range
Accuracy for power (U7005) 50/60 Hz : 0.01% of reading + 0.02% of range
DC : 0.02% + 0.03% of reading of range
50 kHz: 0.15% of reading + 0.05% of range
Measurement range Voltage: 6 V, 15 V, 30 V, 60 V, 150 V, 300 V, 600 V, 1500 V
Current: (probe1) 100 mA to 2 kA, (probe2) 100 mA to 50 kA
(Range configuration changes depending on the current sensor used, U7001 only for Probe2.)
Measurement parameters voltage (U), current (I), active power (P), apparent power (S), reactive power(Q), power factor (λ), phase angle (φ), voltage frequency(fU), current frequency(fI), efficiency (η), loss (Loss), voltage ripple factor (Urf), current ripple factor (Irf), current integration (Ih), power integration (WP), voltage peak (Upk), current peak (Ipk)

– Harmonics measurement: maximum analysis order 500th
– Waveform recording: recording capacity 5M words × ( [voltage/current] ) × – No. of channels + motor waveforms)
– Motor analysis (option): voltage, torque, RPM, frequency, slip, motor power
– FFT analysis*
– Flicker measurement*

Calculation function Efficiency and loss calculations, User-defined calculations*, Delta conversion, Current sensor automatic phase shift calculation
External interface USB flash drive, LAN, GP-IB, RS-232C, external control, optical link*, BNC sync.*, CAN or CAN FD*
Power supply 100 V to 240 V AC, 50/60 Hz, 230 VA
Dimensions and mass Approx. 430 mm (16.93 in) W × 221 mm (8.70 in) H × 361mm (14.21 in) D, Approx. 14kg (493.84 oz)
Accessories – Power cord ×1
– Instruction Manual ×1
– GENNECT One (PC applications) CD ×1
– D-sub 25-pin connector ×1 (PW8001-02, -05, -12, -15 only)
  • *To be supported in Ver. 2.00

Pickup at a NWI Office Location

If you do not want to pay for delivery or need to receive the item ASAP, you can pick the item up at one of our five (5) Australian offices. Just bear in mind not all offices will have everything in stock. Please call our 1300 669 162 number to see if your item is in stock at your local office.  

Interstate Deliveries:

Delivery costs are based off your location in Australia. NWI Group uses TNT Australia for all domestic deliveries.  

Estimated Delivery Timeframe:

If you opted to collect at a NWI office location, you will receive an email to inform you when your goods are ready for collection. If you opted for delivery, you would receive an email when the goods have been despatched to the couriers with details so you can track your order. We aim to despatch all orders within 1-2 business days. In the unusual event of a delay to the despatch of your order you will be contacted at the earliest opportunity. Once the order has been despatched the estimated delivery time is as follows:
  • Metro (Exclude: Hobart Metro) 1 -2 business day:
  • Hobart Metro 3-4 business days
  • Regional Areas: 3-4 business days:
  • Remote Areas: 6-9 business days
Please note that these delivery timeframes are estimates and are not guaranteed.  

Returns Policy

Changed your mind? No worries. You just need to get the product back to the NWI office it was shipped from (this is on your receipt) within 30 days, unused and in its original packaging and we will give you a refund (excluding delivery costs – terms and conditions apply) Special order items are excluded from this returns policy.

General Data Sheet

HIOKI PW8001 8 Channel Power Analyser


Why Choose NWI?

Since its inception in 1994, NWI Group has been committed to providing a service of quality in the sale, calibration and service of measuring equipment used in laboratories and manufacturing companies. Our strive for continuous improvement is part of our quality policy statement. A family-owned business, we have offices throughout Australia. Our product range covers fine precision measuring equipment to large industrial weighbridges, process instrumentation and automation software. Our calibration services for process and laboratories through our NATA accreditation guarantees our commitment to correct measurement and customer satisfaction.

Our Mission

It is our aim to provide our customers with levels of service that consistently exceed their expectations. This recognises that the customers ongoing, long-term relationship is crucial for business growth and development.

Our Vision

Provide individuals and companies with high quality and reliable measuring equipment, technology, and calibration services now and for future generations.


NATA Accreditation for:
  • Mass & Weighing
  • Volume & Density
  • Electrical Metrology
  • Time & Frequency Metrology
  • Temperature & Humidity Metrology
NMI Trade Measurement Servicing Licence for Weighing & Mass.



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11/5 Agosta Drive, Laverton North, 3026


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2D/919 Nudgee Road Banyo QLD 4014


1/19 Industry St Malaga WA 6090

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Phone: 1300 669 162