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- PW481-50 S2
- Power Supply Module
- Japan
- 315 × 180 × 95 mm
- 3.05kg
- Xiamen, China
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Portable Power Measurement Instrument – Model PW481-50 S2 Technical Profile
1. Product Overview
PW481-50 S2 is a high-capacity portable power measurement instrument designed for heavy-duty industrial electrical diagnostics, advanced energy auditing, and high-current power quality analysis.
It is built for professional engineers operating in demanding environments such as steel plants, large manufacturing facilities, power distribution systems, and heavy industrial motor drive networks. The instrument is capable of measuring voltage, current, active power, reactive power, apparent power, frequency, power factor, energy consumption, and harmonic distortion with stable long-term performance.
The “50” configuration indicates a high-current extended measurement capability, while the “S2” designation represents an optimized system configuration that simplifies operation while maintaining advanced measurement functionality.
PW481-50 S2 is designed for field use where electrical loads are large, waveform distortion is strong, and measurement stability is critical over long periods.
2. Product Category and Series Positioning
- Product Type: High-Capacity Portable Power Analyzer
- Series: PW Portable Power Measurement Series
- Configuration Level: 50 high-current + S2 optimized architecture
- Application Level: Heavy industrial power quality analysis and energy diagnostics
PW481-50 S2 is positioned as a high-load optimized model within the PW481 platform, focusing on high-current industrial environments and stable field operation.
3. Brand Information
- Brand Category: Industrial electrical measurement and instrumentation manufacturer
- Product Segment: Power quality analysis and energy monitoring systems
- Application Field: Industrial maintenance, energy auditing, electrical engineering diagnostics
The PW series is widely used in industrial environments requiring high reliability, accurate measurement, and long-term operational durability.
4. Product Parameters (Detailed Specification Table)
| Parameter | Specification |
|---|---|
| Model | PW481-50 S2 |
| Configuration | 50 high-current + S2 optimized system |
| Measurement Type | Portable power quality analyzer |
| System Support | Single-phase / multi-phase measurement |
| Voltage Range | 0 – 1000 V AC |
| Current Range | 0.05 – 200 A (high-current 50-class S2 configuration) |
| Frequency Range | 40 – 70 Hz |
| Power Measurement | Active / Reactive / Apparent Power |
| Energy Function | Real-time + cumulative energy tracking |
| Harmonic Analysis | Advanced multi-order harmonic spectrum analysis |
| Power Quality Functions | Waveform distortion + transient monitoring |
| Accuracy Class | ±0.1% – ±0.15% typical |
| Sampling System | High-speed synchronized multi-channel sampling |
| Display | High-resolution multi-line LCD interface |
| Data Storage | High-capacity internal memory logging system |
| Communication Interface | External data export + system integration support |
| Input Channels | Multi-channel extended architecture (S2 optimized) |
| 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 polymer + shock-resistant structure |
| Protection Level | Industrial dust, vibration, and heavy-load resistance |
| Dimensions (mm) | 315 × 180 × 95 mm |
| Weight (kg) | Approx. 3.05 kg |
5. Product Applications
PW481-50 S2 is designed for heavy industrial environments requiring high-current measurement capability combined with stable long-term operation and simplified workflow.
Typical applications include:
- Steel plant and metallurgy electrical system diagnostics
- Large-scale industrial power distribution monitoring
- High-power motor drive system performance analysis
- Electrical grid substation heavy-load testing
- Industrial transformer and feeder line monitoring
- Large manufacturing energy optimization
- HVAC systems in large facilities
- Renewable energy high-output system evaluation
- Continuous industrial energy auditing
- Power quality analysis under extreme nonlinear load conditions
The S2 configuration ensures smoother operation in complex field environments while maintaining high-current capability.
6. Product Advantages
PW481-50 S2 provides a strong balance between heavy-duty capability and operational efficiency.
Key advantages include:
- High-current 50-class measurement capability for industrial heavy loads
- S2 optimized system design for simplified advanced operation
- Stable accuracy under high electrical stress environments
- Strong harmonic analysis capability for complex waveforms
- High immunity to industrial electrical noise and interference
- Fast transient capture for sudden load variations
- Large internal memory for continuous long-term recording
- Multi-channel architecture for complex system diagnostics
- Rugged construction for harsh industrial environments
It is especially suitable for engineers working in high-load industrial electrical systems.
7. Related Models (Same Series or Closely Associated)
The following models belong to the PW portable measurement family or closely related high-capacity configurations.
PW Series Related Models Table
| Model | Function Level | Application Scope | Voltage Range | Current Range | Accuracy | Dimensions (mm) | Weight (kg) |
|---|---|---|---|---|---|---|---|
| PW481-01 | Standard configuration | General industrial diagnostics | 0–1000 V | 0.01–80 A | ±0.15–0.2% | 262 × 142 × 72 | 1.50 |
| PW481 | Mid-level advanced | Industrial energy analysis | 0–1000 V | 0.01–100 A | ±0.1–0.2% | 265 × 145 × 75 | 1.55 |
| 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 diagnostics | 0–1200 V | 0.05–120 A | ±0.15% | 290 × 160 × 82 | 1.90 |
| PW481-50 S2 | Heavy-duty optimized | High-current industrial systems | 0–1000 V | 0.05–200 A | ±0.1–0.15% | 315 × 180 × 95 | 3.05 |
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
PW481-50 S2 is a high-capacity portable power measurement instrument designed for heavy industrial environments requiring strong current handling capability, stable measurement performance, and simplified advanced operation.
It integrates a 50-class high-current architecture with S2 optimization, making it suitable for demanding industrial applications with complex electrical conditions.
Within the same product family, lower-tier models focus on general diagnostics, while higher-tier configurations extend into full-scale industrial power quality analysis and advanced system engineering applications.