Description

Detailed Parameter Table

Parameter Name	Parameter Value
Product Model	PW441-10
Manufacturer	Yokogawa Electric Corporation
Product Category	Precision Power Measurement Module
Measurement Type	Single-Phase AC/DC Power & Energy
Voltage Input	300 V range (1.5 kV peak)
Current Input	5 A direct / 50 A (with external shunt)
Basic Accuracy	±0.04% of reading (45-66 Hz)
Bandwidth	DC, 0.1 Hz – 2 MHz (±3 dB)
Sampling Rate	10 MS/s (simultaneous)
Harmonic Analysis	Up to 500th order (0.1 Hz resolution)
Communication Interface	EtherCAT®, Modbus TCP, GP-IB (via mainframe)
Operating Temperature	0°C to +45°C (32°F to 113°F)
Safety Standards	IEC 61010-1 CAT III 600 V
Certifications	CE, UKCA, cULus, SIL 2 (IEC 61508)

Product Introduction

The YOKOGAWA PW441-10 is a metrology-grade single-phase power measurement module designed for Yokogawa’s WT5000 Precision Power Analyzer platform. Engineered for laboratory accuracy in industrial environments, this module delivers ±0.04% uncertainty in critical power measurements across AC/DC systems. The YOKOGAWA PW441-10 integrates high-speed sampling (10 MS/s) with 18-bit resolution to capture transient phenomena in modern power electronics – including EV chargers, renewable energy inverters, and aerospace power systems.

As a core component of Yokogawa’s WT5000 series, the YOKOGAWA PW441-10 provides simultaneous voltage/current waveform analysis with industry-leading phase accuracy (±0.05°). Its dual 300V/5A inputs support direct connection or external shunts, enabling precision loss measurements in high-efficiency systems. The module’s value lies in enabling compliance testing (IEC 62301, JIS C 1212), harmonic verification (IEC 61000-3-2), and R&D validation where measurement certainty impacts product performance and certification.

YOKOGAWA PW441-10

Core Advantages and Technical Highlights

The YOKOGAWA PW441-10 redefines power measurement integrity through advanced engineering:

Metrological Precision: Utilizing Yokogawa’s proprietary Direct Digital Synthesis (DDS) technology, the YOKOGAWA PW441-10 achieves ±0.04% basic accuracy – 5x better than industrial power meters. Dual 24-bit ΣΔ ADCs eliminate range-switching errors while maintaining linearity from 1% to 130% of full scale.

High-Fidelity Transient Capture: With 2 MHz bandwidth and 10 MS/s sampling, the module resolves sub-microsecond events in SiC/GaN inverters. Anti-aliasing filters and 4 MS memory depth prevent waveform distortion during surge tests or motor startup analysis.

Advanced Harmonic Intelligence: Simultaneously computes RMS, power, and harmonics up to the 500th order with 0.1 Hz resolution. The YOKOGAWA PW441-10’s FFT engine provides THD, interharmonics, and subgroup analysis critical for grid-code compliance in wind/solar farms.

Seamless System Integration: EtherCAT® enables real-time control loop integration (≤1 μs synchronization). SIL 2 certification allows deployment in safety-critical systems like nuclear backup power validation.

Thermal Stability: Proprietary drift-compensation algorithms maintain ±30 ppm/°C accuracy drift across operating temperatures – essential for automotive environmental chambers.

Typical Application Scenarios

The YOKOGAWA PW441-10 delivers critical insights across advanced power systems:

EV Fast-Charger Development: Validates 150 kW+ CCS/CHAdeMO chargers with ±0.1% efficiency mapping from grid input to battery output. Captures switching losses in SiC modules during 10-80% SOC charging profiles.

Aerospace 400 Hz Power Systems: Certifies aircraft ground power units (GPU) per MIL-STD-704F. The YOKOGAWA PW441-10’s 2 MHz bandwidth analyzes voltage transients during APU switchover.

Semiconductor Plasma Tool Power: Measures non-sinusoidal RF-biased power (13.56 MHz) in etch/deposition tools with harmonic phase analysis for process repeatability.

High-Efficiency Motor Drives: Quantifies switching losses in 20 kHz VFDs using integrated PWM analysis functions. SIL 2 capability supports functional safety verification in ISO 13849 systems.

YOKOGAWA PW441-10

Related Model Recommendations

YOKOGAWA WT5000 Mainframe: Required platform for PW441-10 module operation (supports up to 7 modules).

YOKOGAWA 701930 Current Sensor: 5 ARMS/100 MHz Rogowski coil for high-bandwidth motor drive measurements.

YOKOGAWA PW3337-01: 3-phase module for polyphase systems (complements PW441-10 in multi-phase setups).

YOKOGAWA 700929 Voltage Probe: 1000:1 high-voltage divider for >1 kV measurements.

YOKOGAWA GP-10: External GPS unit for synchronized multi-analyzer timestamps.

YOKOGAWA WTViewer Plus: PC software for automated PW441-10 test sequences.

Installation, Commissioning and Maintenance Instructions

Installation Preparation:
Mount the YOKOGAWA PW441-10 in a WT5000 mainframe (slots 1-7). Ensure ambient temperature <40°C with adequate ventilation. Use Yokogawa-specified cables (model 700929/701933) – shield connections within 15 cm of terminals. For >5 A measurements, connect external shunts (e.g., 0.1 Ω/100 A) to AUX terminals with Kelvin sensing.

Commissioning:

Perform zero-adjustment via WT5000 front panel.

Set voltage/current ranges matching sensor ratings.

Enable harmonic analysis with base frequency auto-detect.

Validate accuracy using Yokogawa 2554A calibrator (±0.005% reference).

Maintenance Protocol:

Annual calibration at Yokogawa-accredited lab

Quarterly zero-point verification

Monitor internal temperature via Modbus register %MW102

Replace cooling fan every 20,000 operating hours