Overview
The Hioki PW3335 is a benchtop single-phase AC/DC power meter engineered to deliver dependable measurements from μA-level standby power to high-load conditions. It minimizes power-factor-related error and supports crest factor up to CF6, enabling accurate readings on modern switching power supplies, adapters, and no-load transformer tests. The instrument provides wide voltage and current ranges, harmonic analysis capability, and multiple communication interfaces for automated systems and long-term energy evaluations.
Key Features
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High basic accuracy for power measurement, suitable for energy-efficiency and standby power tests.
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Wide bandwidth from DC and 0.1 Hz up to 100 kHz to cover line frequency, variable-frequency drives, and high-frequency switching behavior.
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Ultra-low measurement ranges starting at 1 mA current and 6 V voltage, helping quantify μA-level standby power precisely.
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Crest factor support (CF6) to capture distorted waveforms typical of no-load and SMPS conditions.
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Low power-factor performance with very small PF-related effect, enabling accurate measurements even near reactive conditions.
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Harmonic measurement up to the 50th order with synchronization frequency 10–640 Hz for power-quality and compliance analysis.
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Flexible interfaces: LAN standard across models, plus RS-232C and/or GP-IB depending on the variant; optional D/A analog outputs on specific models for real-time analog monitoring.
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External current sensor input (on designated models) to extend measurement to high-current applications up to thousands of amperes with Hioki sensors and accessories.
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Integration functions for current (mAh) and active energy (mWh) over long durations, supporting energy profiling and endurance tests.
Applications
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Standby power and IEC 62301 testing for consumer electronics, adapters, chargers, and appliances.
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Energy-efficiency evaluation of power supplies, LED drivers, servers (SPECpower®-related measurements), and embedded systems.
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No-load transformer and motor testing where power factor is low and crest factor is high.
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Production line quality control with fast display update and remote I/O via LAN/RS-232C/GP-IB; analog D/A output for process integration (specific models).
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R&D waveform behavior analysis within 0.1 Hz–100 kHz, including distorted or pulsed loads.
Technical Specifications
(All values summarized from official specifications; choose ranges closest to your test plan.)
| Specification | PW3335 Details |
|---|---|
| Measurement wiring | Single-phase, two-wire (AC/DC) |
| Voltage ranges | 6 V to 1000 V (8 ranges) |
| Current ranges | 1 mA to 20 A (14 ranges); max continuous input up to 30 A |
| Power measurement | From 6.0000 mW to 20.000 kW (range-dependent) |
| Frequency characteristics | DC, 0.1 Hz to 100 kHz |
| Low PF performance | Power-factor effect typically ≤ ±0.1% f.s. (45–66 Hz) |
| Crest factor | CF6 capability for high-crest-factor waveforms |
| Harmonics | Sync 10–640 Hz; up to 50th order; provides RMS and THD plus fundamental components |
| Integration | Current and active power integration up to 10,000 hours; 6-digit display for mAh/mWh |
| Display update rate | 5 times/s to 20 s (depending on averaging) |
| Interfaces (by model) | LAN (all); RS-232C (all except -01); GP-IB (-01, -04); D/A output (-02, -04); external sensor input (-03, -04) |
| Input impedance | Voltage input approx. 2 MΩ (50/60 Hz); current input ≤520 mΩ (1 mA–100 mA ranges) / ≤15 mΩ (200 mA–20 A ranges) |
| Dimensions & weight | Approx. 210(W) × 100(H) × 245(D) mm; ~3 kg |
| Included | Instruction manual, power cord, terminal safety covers |
Model Variants (Order Codes)
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PW3335: Built-in LAN, RS-232C
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PW3335-01: Built-in LAN, GP-IB
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PW3335-02: Built-in LAN, RS-232C, D/A output
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PW3335-03: Built-in LAN, RS-232C, external current sensor terminal
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PW3335-04: Built-in LAN, RS-232C, GP-IB, D/A output, external sensor terminal
Package Contents
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PW3335 main unit
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Power cord
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Instruction manual
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Terminal safety covers and mounting screws
Call to Action
Looking for dependable standby power and load testing with minimal PF error and CF6 support? Choose the Hioki PW3335. Contact our team for pricing, model selection (-01/-02/-03/-04), sensor pairing for high-current applications, and integration assistance for automated test systems.
【FAQ】（Rank Math FAQ）
Q1. What makes the PW3335 suitable for standby power measurements?
A1. It offers very low current ranges starting at 1 mA, a bandwidth down to DC/0.1 Hz, and reduced power-factor-related error, ensuring accurate readings on μA-level standby loads and distorted waveforms.
Q2. Which PW3335 model should I choose for automated systems?
A2. For GP-IB control select PW3335-01 or PW3335-04. If you require analog D/A output, choose PW3335-02 or PW3335-04. For external current sensors (up to high currents), select PW3335-03 or PW3335-04.
Q3. Can it analyze harmonics?
A3. Yes. The PW3335 supports harmonic analysis up to the 50th order with synchronization frequencies from 10 to 640 Hz, providing RMS, THD, and fundamental components.
Q4. What bandwidth does it cover?
A4. DC and 0.1 Hz to 100 kHz, suitable for line frequency, VFD, and switching power supply applications.
Q5. Does it support long-term energy integration?
A5. Yes. It integrates current (mAh) and active power (mWh) for up to 10,000 hours with 6-digit resolution, ideal for energy profiling and life-tests.
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