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CW240 Clamp-On Power Analyzer
Brand: Yokogawa Electric CorporationThe CW240 power meter is a complete tool for enhancing energy efficiency, finding areas for improvement and assessing equipment lifecycles.
The meter provides in-depth information on how an item of equipment, an area of a plant or a complete facility is operating that goes beyond simply measuring power usage.
By using the supplied clamp-on components and probes, users can better determine maintenance, repair and replacement schedules for equipment such as transformers and motors.
Information is provided with respect to load factors and demand factors, as well as current/voltage fluctuations at motor start-up.
Features- The CW240 offers many unique features to improve energy efficiency through highly detailed data collection and easy-to-understand displays.
- Measurement of Instantaneous Values: Unique 3-wattmeter display provides an immediate value for each measurement element (voltage/current/electric power, etc.) to allow users to cut energy costs through a better understanding of power consumption, maximum load factor and peak current.
- Power Quality Measurement: Measures and displays active power, regenerative power and reactive power quality—along with simultaneous displays of each value.
- Demand Management: Enables users to set the desired demand limit in preferred time units in order to determine the maximum power demand.
- Harmonics Measurement: Reveals distortions in voltages and currents that can cause malfunctions and power loss. Measures harmonics from the 1st to 50th. User-friendly data display in list, bar graph (linear/log) or vector (inflow/outflow judgment).
- Waveform Measurement: Displays voltage and/or current of each phase in easy to understand graphs.
- Voltage Fluctuation Measurement: Detects time and date of each fluctuation occurrence, the fluctuation type, the rms values, and the start and end period.
Specifications
Accuracy
- ± 0.1 % of Reading ± 1-Digit - Frequency Measurement Function
- ± 0.5 % of Full Scale - Analog Input & DA Output Functions
- ± 1.5 % of Reading ± 1.5 % of Range - Harmonic Measurement Function
- ± 2.0 % of Reading ± 1.5 % of Range - Harmonic Measurement Function
- ± 20 ppm at Typical 23° C (73.4° F) - Integration Time & Real Time Accuracy
- ± 3.0 % of Reading ± 1.5 % of Range - Harmonic Measurement Function
Applications
- Electrical Equipment at Factories & Building
- Food Processing at Factories & Building
- Printing Machinery
- Semiconductor Manufacturing Equipment
Approvals & Certifications
- BS
- CE
- CSA
- cULus
- SAA
- VDE
Channels
- 2-Channels - Number of Input Channels
- 4-Channels - Number of Output Channels
Communication
- Baud Rate: 1,200, 2,400, 4,800, 9,600, 19,200, 38,400 bit/sec
- EIA RS-232
Consumption
- 10 W Approximately (Normal Operation) - Max.
- 20 W Approximately (During Charging of NiMH Battery Pack) - Max.
- 30 VA Approximately (Normal Operation) - Max.
- 60 VA Approximately (During Charging of NiMH Battery Pack) - Max.
Current
- 20-3,600 Arms - Max.
Display
- 4-Digits - Items Other Than Power Quantity
- 5.7-inch STN Monochrome LCD Display (320 x 240 Dots) with Backlight
- 6-Digit Display
- Bar Graph
- Vector
Electrical Connectors
- D-Sub 9-Pin Connector - Communication Function
Frequency
- 45 to 65 Hz - Fundamental Wave Frequency
Humidity
- 30 to 75 % Relative Humidity, 23° C (73.4° F) ± 5° C (± 9° F) - Accuracy Guarantee Temperature & Humidity Ranges
- 5 to 80 % Relative Humidity, Non-Condensing - Operating Temperature
- 90 % Relative Humidity, Non-Condensing - Storage Temperature
Input
- 100 mV/1 V / 5 Vdc
- 150-1,000 V
- TTL Level or Contact - Control Input
Insulation Resistance
- 50 megaohms at 500 Vdc or Greater between Voltage Input Terminals & Case, between Voltage Input Terminals & Current Input Terminals / DC Power Terminals / External Interface Terminals
Measurement Accuracy
- ± 1-Digit - Power Quantity & Demand Measurement Function
Measuring Range
- 0 mVarh to 9,99,999 GVarh - Reactive Power Quantity (Lagging)
- -0 mVarh to -9,99,999 GVarh - Reactive Power Quantity (Leading)
- 0 mWh to 9,99,999 GWh - Active Power Quantity (Consumption)
- -0 mWh to -9,99,999 GWh - Active Power Quantity (Regeneration)
Measuring Time
- 20 milliseconds Approximately - Sampling Rate
Operating Temperature
- 5° to 40° C (41° to 104° F)
Output
- ± 1 Vdc of the Rated Value for Each Range Power Quantity Depends on the Output Rate
- TTL - Control Output
Power Requirement
- 6 AA Alkaline Batteries
- One NiMH Rechargeable Battery
Power Supply
- 100-240 Vac, 50/60 Hz
Resistance
- 1.3 megaohms Approximately - Input Resistance (Voltage)
- 100 kiloohms - Input Resistance (Current)
- 22 ohms ± 5 % - Output Resistance
Resolution
- Polarity + 11-bits
Storage Temperature
- -20° to 60° C (-4° to 140° F)
Supply Voltage
- 1,000 Vrms - Max.
- 3.32 kVac RMS for One Minute (Sensed Current: 1 mA) between Voltage Input Terminals & Current Input Terminals / DC Power Terminals / External Interface Terminals
- 5.55 kVac RMS for One Minute (Sensed Current: 1 mA) between Voltage Input Terminals & Case
Temperature Coefficient
- ± 0.02 % of Full Scale/°C or Less - Analog Input & DA Output Functions
- ± 0.03 % of Range/°C - Voltage
- ± 0.05 % of Range/°C - Current
Update Time
- 30 minutes or more - Warm-Up Time
- Approximately 0.5 second - Display Updating Interval
Wiring
- 2-Wire - Single-Phase
- 3-Wire - Single-Phase, Three-Phase
- 4-Wire - Three-Phase
- Electrical Equipment at Factories & Building
- Food Processing at Factories & Building
- Printing Machinery
- Semiconductor Manufacturing Equipment