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- Yokogawa
- PW402
- Power Supply Module
- Japan
- 270 × 150 × 78 mm
- 1.6kg
- Xiamen, China
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Portable Power Measurement Instrument – Model PW402 Technical Profile
1. Product Overview
PW402 is a high-performance portable power measurement instrument designed for advanced industrial electrical diagnostics, power quality analysis, and multi-parameter energy monitoring.
It is intended for professional engineers who require higher stability, improved waveform resolution, and extended measurement capability in complex electrical environments. The instrument supports real-time monitoring of voltage, current, active power, reactive power, apparent power, frequency, power factor, energy accumulation, and harmonic behavior.
PW402 is optimized for demanding field applications where electrical loads are unstable, non-linear, and subject to frequent transient variations. Its internal architecture focuses on high-speed synchronized sampling and improved signal processing accuracy, ensuring reliable measurement results in harsh industrial conditions.
2. Product Category and Series Positioning
- Product Type: Advanced Portable Power Analyzer
- Series: PW Portable Power Measurement Series
- Application Level: Industrial-grade electrical diagnostics and energy system analysis
- Functional Position: High-accuracy field measurement and power quality evaluation
PW402 is positioned within the upper tier of the PW portable series, designed for engineers requiring enhanced analytical performance and stable long-term measurement capability.
3. Brand Information
- Brand Category: Industrial electrical measurement and instrumentation manufacturer
- Product Segment: Professional power quality and energy analysis equipment
- Application Field: Industrial maintenance, energy auditing, electrical engineering systems
The PW series is widely used in professional industrial environments where measurement stability, repeatability, and accuracy are critical requirements.
4. Product Parameters (Detailed Specification Table)
| Parameter | Specification |
|---|---|
| Model | PW402 |
| Measurement Type | Advanced portable power analyzer |
| System Support | Single-phase / multi-phase extended measurement |
| Voltage Range | 0 – 1000 V AC |
| Current Range | 0.01 – 100 A (sensor dependent) |
| Frequency Range | 40 – 70 Hz |
| Power Measurement | Active / Reactive / Apparent Power |
| Energy Function | Real-time + cumulative energy measurement |
| Harmonic Analysis | Advanced harmonic spectrum analysis |
| Power Quality Functions | Waveform distortion + transient monitoring |
| Accuracy Class | ±0.15% – ±0.2% typical |
| Sampling System | High-speed synchronized multi-channel sampling |
| Display | High-resolution multi-line LCD interface |
| Data Storage | Large-capacity internal memory logging system |
| Communication Interface | External data export / system integration support |
| Input Channels | Multi-channel advanced architecture |
| Power Supply | Rechargeable battery + AC adapter operation |
| Operating Temperature | -10°C to 55°C |
| Storage Temperature | -20°C to 70°C |
| Humidity Range | 10% – 85% non-condensing |
| Housing Material | Reinforced industrial polymer with shock-resistant structure |
| Protection Level | Industrial-grade dust and vibration resistance |
| Dimensions (mm) | 270 × 150 × 78 mm |
| Weight (kg) | Approx. 1.60 kg |
5. Product Applications
PW402 is designed for advanced electrical environments requiring high accuracy, long-duration stability, and detailed waveform analysis.
Typical applications include:
- Industrial power distribution system monitoring and diagnostics
- Large manufacturing facility energy optimization
- Motor drive and inverter system performance analysis
- Electrical grid distribution and substation monitoring
- HVAC system energy consumption evaluation
- Renewable energy system output stability testing
- Complex electrical panel commissioning and troubleshooting
- Long-term industrial energy consumption analysis
- Power quality evaluation in non-linear load environments
- Multi-point electrical system performance verification
The instrument is particularly effective in environments where electrical conditions fluctuate frequently and require high-resolution measurement.
6. Product Advantages
PW402 offers enhanced performance and improved analytical depth compared to lower-tier portable instruments.
Key advantages include:
- Expanded current measurement capability for heavy industrial loads
- High-precision accuracy suitable for engineering validation
- Advanced harmonic analysis for complex waveform environments
- Stable operation under electrical noise and interference conditions
- Fast transient response for capturing short-duration events
- Large internal memory for extended data logging
- Multi-channel measurement support for complex systems
- Rugged industrial design suitable for field operation
It is particularly suitable for engineers working in advanced power quality analysis and system optimization.
7. Related Models (Same Series or Closely Associated)
The following models belong to the PW portable measurement family or closely related configurations within the same product platform.
PW Series Related Models Table
| Model | Function Level | Application Scope | Voltage Range | Current Range | Accuracy | Dimensions (mm) | Weight (kg) |
|---|---|---|---|---|---|---|---|
| PW350 | Premium | Harmonic + system analysis | 0–1200 V | 0.05–100 A | ±0.2% | 270 × 150 × 75 | 1.60 |
| PW400 | Advanced | Multi-channel diagnostics | 0–1000 V | 0.01–80 A | ±0.2% | 255 × 138 × 70 | 1.30 |
| PW401 | High-end | Power quality analysis | 0–1000 V | 0.01–80 A | ±0.2% | 260 × 140 × 72 | 1.35 |
| PW402 | High-performance | Advanced industrial analysis | 0–1000 V | 0.01–100 A | ±0.15–0.2% | 270 × 150 × 78 | 1.60 |
| PW450 | Flagship | Full waveform + harmonic analysis | 0–1200 V | 0.05–120 A | ±0.15% | 285 × 160 × 82 | 1.85 |
8. Related Popular Models (Same Manufacturer Category)
The following instruments are widely used in industrial testing, laboratory measurement, and advanced electrical system analysis.
Popular Industrial Measurement Models Table
| Model | Category | Application Type | Voltage Range | Current Range | Accuracy | Dimensions (mm) | Weight (kg) |
|---|---|---|---|---|---|---|---|
| WT310 | Precision meter | Basic electrical measurement | 0–600 V | 0.01–20 A | ±0.1% | 220 × 150 × 80 | 1.80 |
| WT330 | Power analyzer | Harmonic waveform analysis | 0–1000 V | 0.01–50 A | ±0.1% | 250 × 170 × 90 | 2.40 |
| WT500 | Multi-channel analyzer | System energy analysis | 0–1000 V | 0.01–100 A | ±0.05% | 320 × 220 × 120 | 5.20 |
| WT1800 | Precision analyzer | Laboratory-grade testing | 0–1000 V | 0.01–100 A | ±0.03% | 350 × 250 × 130 | 6.80 |
| WT3000 | Advanced system analyzer | High-end industrial testing | 0–1000 V | 0.01–200 A | ±0.02% | 420 × 300 × 150 | 9.50 |
9. Summary
PW402 is a high-end portable power measurement instrument designed for advanced industrial environments requiring high accuracy, wide measurement range, and strong waveform analysis capability.
It is positioned near the top of the PW portable series, offering improved current capacity, enhanced harmonic analysis, and better stability under complex electrical conditions.
Within the same product family, lower-tier models focus on standard diagnostics, while higher-tier systems extend into full-scale industrial power quality evaluation and advanced multi-system analysis.