Yokogawa CW500 Power Quality Analyzer

The Yokogawa CW500 is a high-precision, portable power quality analyzer designed for detailed monitoring, diagnostics, and analysis of electrical power systems. Ideal for industrial facilities, commercial buildings, and utility applications, the CW500 provides accurate measurements of voltage, current, power, harmonics, and energy consumption in compliance with IEC 61000-4-30 Class S standards.

Key Features

Advanced Power Measurement

Measures up to 3 AC voltage channels and 4 current channels via clamp-on probes, plus 2 DC voltage inputs.
Captures instantaneous, average, maximum, and minimum values of voltage, current, active/reactive/apparent power, power factor, phase angles, and frequency.
Monitors energy consumption and demand trends, providing detailed reports for system efficiency analysis.

Power Quality Analysis

Detects power disturbances such as voltage sags, swells, interruptions, inrush currents, harmonics, flicker, and unbalances.
Harmonic analysis up to the 50th order, helping identify the effects of non-linear loads.
Visualizes vector diagrams of voltage and current for system diagnostics and correct wiring verification.

Data Logging & Connectivity

Flexible recording intervals from seconds to hours, supporting both short-term tests and long-term monitoring.
Data storage on SD cards, USB transfer, or Bluetooth (depending on model).
CW500Viewer software enables PC-based analysis, report generation, and live data monitoring.

User-Friendly Design

Portable and lightweight for field use.
Quick setup with automatic current clamp recognition and wiring checks.
Clear interface for easy navigation and instant readings.

Applications

The CW500 is widely used for:

Industrial and utility power monitoring
Energy efficiency audits
Facility electrical system troubleshooting
Verification of power quality for sensitive equipment
Detection and analysis of transient events

Technical Specifications

General

Model: CW500-B0-D (without Bluetooth)
Measurement Standard: IEC 61000-4-30 Class S
Display: 3.5″ color TFT LCD (320 × 240 pixels)
Languages: Multilingual (English, Japanese, Chinese, Korean, etc.)
Power Supply:
- AC: 100–240 V, 50/60 Hz
- DC: 6 × AA batteries (Ni-MH / alkaline)
Dimensions: 120 × 175 × 68 mm
Weight: ± 900 g (with batteries)

Inputs & Channels

AC Voltage: 3 input channels
AC Current: 4 channels via clamp-on probes
DC Voltage: 2 input channels
Wiring Support:
- 1P2W (up to 4 systems)
- 1P3W (up to 2 systems)
- 3P3W2current (up to 2 systems)
- 3P3W3current
- 3P4W

Ranges & Accuracy

Voltage (RMS): 600.0 / 1000 V RMS, ±0.2% reading ±0.2% range
Current (RMS): Depends on clamp probe:
- 0–2 A, 0–50 A, 0–100 A, 0–200 A, 0–500 A, 0–1000 A, 0–3000 A
Current Accuracy: ±0.2% reading ±0.2% range + probe accuracy
Active Power Accuracy: ±0.3% reading ±0.2% range + probe accuracy
Frequency Range: 40–70 Hz

Measurement & Analysis

Power & Energy: Voltage, Current, Frequency, Active/Reactive/Apparent Power, Active/Reactive/Apparent Energy, Power Factor, Phase Angle, Demand & Trend Graphs
Power Quality Events: Voltage swell, dip, interruption, transient overvoltage, inrush current, with event time & waveform logging
Distortion & Others: Harmonics up to 50th order, Flicker (Pst, Plt), 3-phase unbalance rate

Data & Storage

Internal Memory: 4 MB flash
External Memory: SD card 2 GB
Communication: USB 2.0 (Bluetooth on select models)
Software: CW500Viewer for PC – analysis, graphs, automated reports

Package Contents

Voltage probes (4 pcs)
SD Card 2 GB
USB Cable & Power Cord
Batteries & Quick Manual
PC Software (CD-ROM)