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- PW481
- Power Supply Module
- Japan
- 265 × 145 × 75 mm
- 1.55kg
- Xiamen, China
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Portable Power Measurement Instrument – Model PW481 Technical Profile
1. Product Overview
PW481 is a high-end portable power measurement and power quality analysis instrument designed for advanced industrial electrical diagnostics, high-precision energy monitoring, and complex waveform evaluation.
It is engineered for professional engineers working in environments with unstable power systems, nonlinear loads, harmonic distortion, and frequent transient disturbances. The device is capable of measuring key electrical parameters such as voltage, current, active power, reactive power, apparent power, frequency, power factor, energy consumption, and harmonic content.
PW481 is typically positioned as a high-performance model within the PW portable measurement platform, offering enhanced accuracy, improved sampling stability, and strong long-duration recording capability.
The instrument is optimized for field use in industrial environments where reliability, portability, and measurement integrity are critical.
2. Product Category and Series Positioning
- Product Type: High-Precision Portable Power Analyzer
- Series: PW Portable Power Measurement Series
- Application Level: Industrial power quality analysis and energy diagnostics
- Positioning: Mid-to-high end portable waveform and energy analyzer
PW481 is designed as a versatile field instrument, balancing advanced analytical capability with portability and ease of operation.
3. Brand Information
- Brand Category: Industrial electrical measurement and instrumentation manufacturer
- Product Segment: Power quality analysis and energy measurement systems
- Application Field: Industrial maintenance, electrical engineering diagnostics, energy auditing
The PW series is widely used in industrial environments requiring stable measurement performance, repeatability, and long-term operational reliability.
4. Product Parameters (Detailed Specification Table)
| Parameter | Specification |
|---|---|
| Model | PW481 |
| Measurement Type | Portable power quality analyzer |
| System Support | Single-phase / multi-phase 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 | Multi-order harmonic spectrum analysis |
| Power Quality Functions | Waveform distortion + transient detection |
| Accuracy Class | ±0.1% – ±0.2% typical |
| Sampling System | High-speed synchronized digital sampling |
| Display | High-resolution LCD interface |
| Data Storage | Internal memory logging system |
| Communication Interface | External data export support |
| Input Channels | Multi-channel measurement architecture |
| Power Supply | Rechargeable battery + AC adapter |
| Operating Temperature | -10°C to 55°C |
| Storage Temperature | -20°C to 70°C |
| Humidity Range | 10% – 85% non-condensing |
| Housing Material | Reinforced industrial-grade polymer |
| Protection Level | Dust and vibration resistant design |
| Dimensions (mm) | 265 × 145 × 75 mm |
| Weight (kg) | Approx. 1.55 kg |
5. Product Applications
PW481 is designed for industrial environments requiring stable, accurate, and portable electrical measurement capability.
Typical applications include:
- Industrial power distribution system monitoring
- Manufacturing plant energy efficiency analysis
- Motor drive and electrical load evaluation
- HVAC system energy consumption measurement
- Electrical panel commissioning and troubleshooting
- Renewable energy system performance monitoring
- Substation and feeder line diagnostics
- Industrial power quality evaluation under nonlinear loads
- Long-term energy consumption tracking
- Field maintenance and electrical system auditing
PW481 is especially suitable for engineers requiring reliable portable diagnostics in medium-to-high complexity electrical systems.
6. Product Advantages
PW481 offers a strong balance between portability, accuracy, and functional capability.
Key advantages include:
- High-accuracy measurement suitable for industrial diagnostics
- Stable performance under electrical noise and interference
- Advanced harmonic analysis capability for waveform evaluation
- Fast transient response for capturing sudden load variations
- Multi-channel measurement support for system analysis
- Large internal storage for long-term data logging
- Compact and portable structure for field operation
- Strong durability for industrial environments
It is widely used for field engineers needing reliable power quality evaluation tools.
7. Related Models (Same Series or Closely Associated)
The following models belong to the PW portable measurement family or closely related configurations.
PW Series Related Models Table
| Model | Function Level | Application Scope | Voltage Range | Current Range | Accuracy | Dimensions (mm) | Weight (kg) |
|---|---|---|---|---|---|---|---|
| PW400 | Entry advanced | Basic industrial diagnostics | 0–1000 V | 0.01–80 A | ±0.2% | 255 × 138 × 70 | 1.30 |
| PW420 | High-end | Harmonic waveform analysis | 0–1200 V | 0.05–120 A | ±0.15% | 280 × 155 × 78 | 1.75 |
| PW450 | Flagship portable | Advanced system analysis | 0–1200 V | 0.05–120 A | ±0.15% | 290 × 160 × 82 | 1.90 |
| PW481 | Mid-to-high portable | Industrial energy diagnostics | 0–1000 V | 0.01–100 A | ±0.1–0.2% | 265 × 145 × 75 | 1.55 |
| PW460 | Top flagship | Full waveform system analysis | 0–1200 V | 0.05–150 A | ±0.1% | 305 × 168 × 88 | 2.25 |
8. Related Popular Models (Same Manufacturer Category)
The following instruments are widely used in industrial testing, laboratory measurement, and advanced electrical engineering environments.
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
PW481 is a versatile mid-to-high-end portable power measurement instrument designed for industrial environments requiring reliable accuracy, stable operation, and strong waveform analysis capability.
It provides a balanced combination of portability and advanced functionality, making it suitable for field engineers performing energy auditing, power quality evaluation, and system diagnostics.
Within the same product family, lower-tier models focus on basic diagnostics, while higher-tier configurations extend into full-scale industrial power quality analysis and advanced system-level engineering applications.