Overview
The HIOKI 3334 AC/DC Power HiTester is built for precision power measurement on single-phase, two-wire systems and DC loads. It handles modern appliance and power-supply waveforms—from half-wave rectified motors to full-wave rectified adapters and heaters with cycle control—without sacrificing accuracy. With wide input ranges up to 300 V and 30 A direct, DC to 5 kHz frequency coverage, and ±0.1% basic accuracy, the 3334 delivers dependable measurements for R&D, production, and compliance work. Its built-in RS-232C interface simplifies data logging and automation; the 3334-01 variant adds GP-IB for legacy system integration. An extended integration function supports cumulative mAh and mWh logging for up to 10,000 hours, ideal for long-term power consumption profiling and energy-efficiency evaluations. (Official status: discontinued; Hioki lists PW3335/PW3335-01 as replacements.)
Key Features
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Single-phase (1P2W) and DC power measurement with AC, DC, and AC+DC modes
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±0.1% basic accuracy (typical, see detailed specs for conditions) for trustworthy results
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Wide frequency support: DC and 45 Hz to 5 kHz for appliances, adapters, and DC supplies with ripple
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Direct input up to 300 V and 30 A; power display from 1.5 W to 9.0 kW depending on range selection
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Integration functions: current (mAh) and active power (mWh) with polarity-independent and sum values, up to 10,000 hours
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Waveform monitoring outputs (simultaneous V, I, W) and D/A analog outputs for logging or external devices
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RS-232C standard; GP-IB available on model 3334-01
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Fast 5 Hz display refresh for responsive readings
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SPECpower® compatibility for server power consumption benchmarking (where applicable)
Applications
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Appliances & small motors: Hairdryers, fans using half-wave rectification
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AC adapters & consumer power supplies: Full-wave rectified loads and standby/active consumption studies
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Heaters & controllers: Phase or cycle-controlled waveforms for voltage/temperature regulation
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DC power consumption: DC rails with superimposed ripple; battery-powered devices and chargers
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Long-run energy studies: 10,000-hour mAh/mWh integration for cumulative consumption tracking
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Production test & QA: Interface options (RS-232C; GP-IB on 3334-01) for automated test sequences
Technical Specifications
| Item | Specification |
|---|---|
| Measurement lines | Single-phase, 2-wire (1P2W) |
| Measured items | Voltage, Current, Active power, Apparent power, Power factor, Frequency, Integration (current, active power), Waveform peak (V/I) |
| Voltage ranges | AC/DC 15.000 / 30.00 / 150.00 / 300.0 V |
| Current ranges | AC/DC 100.00 / 300.0 mA, 1.0000 / 3.000 / 10.000 / 30.00 A |
| Power range | 1.5000 W to 9.000 kW (range combination dependent) |
| Frequency characteristics | DC, 45 Hz to 5 kHz |
| Basic accuracy | ±0.1% rdg. ±0.2% f.s. (DC); ±0.1% rdg. ±0.1% f.s. (45–66 Hz) |
| Display refresh | 5 times/s |
| Integration | Up to 10,000 h; 6-digit display from 0.00000 mAh / 0.00000 mWh; polarity-independent and sum values |
| Input resistance | Voltage: 2.4 MΩ; Current: ≤ 10 mΩ (direct input) |
| Waveform outputs | 3 channels (simultaneous instantaneous V, I, W), 1 V DC f.s. |
| Analog (D/A) outputs | 4 channels (V, I, active power + 1 selectable: apparent power, PF, current integration, active power integration), ±2 V DC f.s. |
| Functions | Rectification method switch: AC+DC (true RMS), DC (average), AC (true RMS); Wave peak; VT/CT ratio; Average |
| Interfaces | RS-232C standard; GP-IB on 3334-01 |
| Power supply | 100–240 V AC, 50/60 Hz, max 20 VA |
| Dimensions / Mass | 210 W × 100 H × 245 D mm; 2.5 kg |
| Accessories | Instruction manual ×1; Power cord ×1 |
| Model status | Discontinued; replacements: PW3335 (for 3334) / PW3335-01 (for 3334-01) |
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