Yokogawa CW240-D/C4 Clamp-on PowerMeter
The CW240 power meter is a complete tool for enhancing the 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.
Measurement of Instantaneous Values
Better determine the maintenance, repair and replacement schedules for each piece of electrical equipment, such as transformers and motors, by analyzing detailed information with respect to load and demand factors. Review detailed information on current and voltage fluctuations at motor start-up.
- Voltage, current, electric power (active, reactive, apparent)
- Power factor, the phase angle of each phase
- Average, minimum, maximum values of each measurement element
Perform data collection at intervals from 60 times per second to hourly in order to cover every application in the plant from the low interval (e.g., plant watt-hours) to high interval testing (e.g., troubleshooting a motor).
Power Quality Measurement
Improve power measurement and data collection for compliance with ISO14001 and other standards by showing exactly how and when power is being used. Power measurement is broken down into individual phases to provide a more comprehensive view of overall power usage.
Investigate the electric power consumption rate for an item of equipment, an area of a plant or a complete facility. Get data beyond the 30-minute demand time frame that most utilities use to obtain average power usage by setting the demand time to units of seconds or minutes.
Power quality is an important and often overlooked element in reducing energy costs. If the power factor is not taken into account, an energy efficiency program could accidentally implement steps that increase the utility bill instead of lowering it. For example, replacing 100-watt incandescent bulbs with low-watt fluorescent bulbs saves energy but can worsen the power factor, possibly resulting in low power factor fines from the electric utility.
Obtain detailed date to ensure smooth power supply for operations, and prolong the life of equipment by reducing the effects of harmonics.
Inverter power supplies can cause distortions in voltages and currents, resulting in malfunctions, equipment damage, and power loss. Therefore, it is critical to understand and monitor harmonics to ensure reliable power supply. The CW240 provides displays of harmonics from the 1st to 50th for analysis to prevent problems.
Voltage Fluctuation Management
Protect equipment from harmful power fluctuations by understanding exactly when and where these fluctuations occur.
The CW240 detects dates/times when fluctuations occur as well as the type of fluctuation, the channels where they occur, RMS values and the periods between start and end. Once the voltage threshold is set, the fluctuations exceeding the threshold are detected.
Functionalities unique to the CW240 make setting up and operating the power meter easy.
- Measure Loads in Four Systems Simultaneously: The CW240 enables measurement in four systems at the same time in a single-phase 2-wire system. In the case of a single three-phase 3-wire system, it can measure two systems simultaneously.
- Reduce Set-up Time and Errors: Its wiring check function prevents wiring errors and provides an easy to understand diagram for matching wiring. The setting check function prevents data acquisition errors from mistakes in voltage range settings, current clamp selection or data save an item.
- Measure Leakage Current: Proprietary technology enables measurements with a 200.0 mA range.
- Save Large Amounts of Data: Using an external memory card (compact flash) enables large amounts of data to be saved.
- Save Analog Data Simultaneously: The Input/Output Analog component enables analog data, such as temperature and illuminance data, to be saved simultaneously with power analog data.
- Power Supply Backup: In addition to the AC adaptor, NiMH battery pack (94004) or alkaline batteries (6 AA batteries) can be used to ensure continuous operation in the event of a power interruption.
- Multi-Language Support: English, German, French, Italian, Spanish, Korean and Chinese screen displays.
- Manual Data Saving: Data for selected items can be saved or printed using the SAVE key.
- Screen Hard Copy: Displayed screen can be saved or printed using the DISP COPY key. Files are saved in bitmap format.
- Zoom Function: Zoom features for measured data of 5 items selected from instantaneous value and measured power quantity data.