HOME > YOKOGAWA > POWERQUALITY > CW240 yokogawa logo

Yokogawa CW240
Clamp on Power Quality Meter
Discontinued

  • Easy-to-read LCD screen display
  • Up to 4 loads can be measured
  • Connection checking function
  • Portable
  • Built-in 1 MB Internal Memory; Can be expanded up to 512 MB by use of external Memory cards
  • Multi-Lingual Support
  • Zoom Function
  • Backup Power supply attachments available
Click here for larger image - Yokogawa CW240 Power Quality Meter (with attachments)Click here for a larger image - Yokogawa CW240 Power Quality Meter (with attachments)
Yokogawa CW240 Shown

Product Information
Datasheet 326 KB
Accessories 199 KB
Manual 4.17 MB
Quick-Start Manual 627 KB
Communications Functions Manual 2.09 MB
Ordering Info Jump to Product Models, Prices, Accessories, and Ordering Information
PDF Help

The CW240 supports four single-phase two-wire systems, two single-phase three-wire systems and even SCOTT connections. The CW240 supports currents ranging from 200.0 mA to 3000 A and voltages up to 1000 V. Electric power (instantaneous values, electric energy, and demand), harmonics, voltage fluctuations (dip, swell, and instantaneous power failure) and waveform scan all be measured simultaneously.

Measurement of Instantaneous Values:
The CW-240 can be used to carry out investigation regarding renewal of electric equipment such as transformers in building, check load factors and demand factors, Example of the CW240 Measurement of instananeous Valuesand to check current/voltage fluctuation at motor start-up.

  • Measurement elements: Voltage/current/electric power (active, reactive, apparent)/power factor/phase angle of each phase, average/minimum/maximum values of each measurement element.
  • Data collection time: 1/2/5/10/15/30 seconds, 1/2/5/10/15/30/60 minutes One cycle (waveform), 100/200/500 ms (short time interval)

Power Quantity Measurement:
Example of the CW240 Power Quailty measurement sytem The CW-240 can measure and display the power quantity consumed up to the specified time (from the start of integration until the end).

  • Measurement elements: Active power quantity, regenerative power quantity, reactive power quantity (leading/lagging)

  • Data collection time: 1/2/5/10/15/30 seconds, 1/2/5/10/15/30/60 minutes

Demand Measurement:

  • Measurement elements:
    • Maximum power demand required since the start of logging measurement and the time it occurs
    • An example of the CW240 Logging of demand Measurements
  • Active power, reactive power (lag), power factor
  • Active power quantity (consumption, regeneration), reactive power quantity (lagging/leading)
  • Demand
    • Demand time limit: Length of time set to obtain the average power (normally 30 minutes)
    • Demand power: Average power during the demand time limit
    Harmonic Measurement:
    In many cases, inverter power supplies are used to drive air-conditioners and compressors. An Example of the Cw240 Harmonic measurement capabilities These power supplies cause distortions in voltages and currents, leading to malfunctions and power loss. Therefore, investigation and control of influences on the main power supplies by harmonics is necessary.
    • Harmonics for Analysis: 1st to 50th
    • Display Data: List, Bar graph (linear/log), vector (inflow/outflow judgment)
    • Measurement Elements: Level, Content, phase angle (voltage/current/electric power of each harmonic), aggregate value (voltage, current, electric power, power factor), aggregate harmonic distortion factors (THD-F or THD-R) of voltage/current
    • THD-F: Distortion factor for the fundamental wave, THD-R: Distortion factor for all rms values voltage/current
    • Data collection time: 1/2/5/10/15/30/60 minutes

     

  • Waveform Measurement:

    • An Example of the CW240 Waveform measurement systemsMeasurement elements: Voltage of each phase, current of each phase
      Voltage and current of each phase

    • Data saving format: Binary (can be converted to CSV format using a standard application program)
       

    Voltage Fluctuation Measurement:
    An example of Voltage Measurement being recorded on a CW240The CW240 detects dates/times of when fluctuations occur, fluctuation type, channels where they occur, rms values, and periods between start and end. The voltage threshold is set, and fluctuations exceeding the threshold are detected.

    • Measurement element: Voltage dip (voltage drop), voltage swell (voltage rise), instantaneous power failure
    • Data saving: Detected based on the voltage rms value of one waveform. Up to 100 data sets can be saved.

     

    Measures Loads in Four Systems Simultaneously:
    The CW240 enables simultaneous measurement of loads in four systems in the case of the single-phase 2-wire system, and in two systems in the case of the single/three-phase 3-wire system (common to voltage). Current clamp probe/range can be set for each system.

    Reduces Operations Errors at Work Site:
    • Writing Check Function
      Prior to start of measurement, the CW-240 checks whether wiring is correct. Wiring errors, reverse connection of current clamps, and phases to be checked can be displayed in a vector diagram.


    • Setting Check Function:
      Settings made for data saving can be checked in the screen. This prevents data acquisition errors that may occur due to mistakes in voltage range setting, current clamp selection or data save item selection.


    Saving Large Amounts of Data:
    Use of an external memory card (compact flash) makes it possible to save a large amount of data. A memory card (*1) of up to 512 MB can be used, and the data is saved in CSV format. (*2)In addition, the CW-240 has a 1MB internal memory.
    *1: Memory cards purchased from Yokogawa should be used.
    *2: Data shorter than one second is saved in binary format. Screen copies can be made in bitmap format. Voltage fluctuation data is saved in text format.


     
    Ordering Information
    Model Description Buy Online Price
    CW240-D/C1  Yokogawa CW240-D/C1 Clamp On Power Meter, Power Cord UL/CSA Standard w/ Clamp-on Probe for 20/200A (2pcs/set)  Discontinued
    CW240-D/C2  Yokogawa CW240-D/C2 Clamp On Power Meter, Power Cord UL/CSA Standard w/ Clamp-on Probe for 20/200A (4pcs/set)  Discontinued
    CW240-D/C3  Yokogawa CW240-D/C3 Clamp On Power Meter, Power Cord UL/CSA Standard w/ Clamp-on Probe for 500A (2pcs/set)  Discontinued
    CW240-D/C4  Yokogawa CW240-D/C4 Clamp On Power Meter, Power Cord UL/CSA Standard w/ Clamp-on Probe for 500A (4pcs/set)  Discontinued
    CW240-D/C5  Yokogawa CW240-D/C5 Clamp On Power Meter, Power Cord UL/CSA Standard w/ Clamp-on Probe for 700A (2pcs/set)  Discontinued
    CW240-D/C6  Yokogawa CW240-D/C6 Clamp On Power Meter, Power Cord UL/CSA Standard w/ Clamp-on Probe for 700A (4pcs/set)  Discontinued
    CW240-D/C7  Yokogawa CW240-D/C7 Clamp On Power Meter, Power Cord UL/CSA Standard w/ Clamp-on Probe for 50A (2pcs/set)  Discontinued
    CW240-D/C8  Yokogawa CW240-D/C8 Clamp On Power Meter, Power Cord UL/CSA Standard w/ Clamp-on Probe for 50A (4pcs/set)  Discontinued
    CW240-D/C9  Yokogawa CW240-D/C9 Clamp On Power Meter, Power Cord UL/CSA Standard w/ Clamp-on Probe for 2A (2pcs/set)  Discontinued
    CW240-D/C10  Yokogawa CW240-D/C10 Clamp On Power Meter, Power Cord UL/CSA Standard w/ Clamp-on Probe for 2A (4pcs/set)  Discontinued
    CW240-D/C11  Yokogawa CW240-D/C11 Clamp On Power Meter, Power Cord UL/CSA Standard w/ Clamp-on Probe for 3000A (2pcs/set)  Discontinued
    CW240-D/C12  Yokogawa CW240-D/C12 Clamp On Power Meter, Power Cord UL/CSA Standard w/ Clamp-on Probe for 3000A (4pcs/set)  Discontinued
    CW240-D/C13  Yokogawa CW240-D/C13 Clamp On Power Meter, Power Cord UL/CSA Standard w/ Clamp-on Probe for 3000A(Flexible Type) (2pcs/set)  Discontinued
    CW240-D/C14  Yokogawa CW240-D/C14 Clamp On Power Meter, Power Cord UL/CSA Standard w/ Clamp-on Probe for 3000A(Flexible Type) (4pcs/set)  Discontinued
    CW240-D/DA  Yokogawa CW240-D/DA Clamp On Power Meter, Power Cord UL/CSA Standard w/ Analog input/output function  Discontinued
    CW240-D/PM1  Yokogawa CW240-D/PM1 Clamp On Power Meter, Power Cord UL/CSA Standard w/ NiMH battery pack(94004) and carrying case(93020)  Discontinued
    CW240-D/SP1  Yokogawa CW240-D/SP1 Clamp On Power Meter, Power Cord UL/CSA Standard w/ Includes options DA, PM1 & 32MB Flash Card, card reader, 9 pin RS232 cable & AP240 software  Discontinued
    Included Accessories
     
    • 1 - CD-Rom containing Instruction Manual, Quick Manual, Communication Function Manual
    • 1 - AC adaptor
    • 6 - AA Battery
    • 1 - Toolbox24 Software (On CD-ROM)

    Included

    Optional Accessories
    Model Description Buy Online Price
    788011-M  Yokogawa 788011-M AC adaptor with Power cord  Discontinued
    91007  Yokogawa 91007 Voltage probe 4 pieces/set  Buy Now Sale $38.80
    (Reg. $40.00)
    93020  Yokogawa 93020 Carrying case, holds all accessories  Discontinued
    94004  Yokogawa 94004 NiMH battery pack  Discontinued
    94006  Yokogawa 94006 AC Adapter Power Supply 200-240V AC For Printer (europe)  Discontinued
    96030  Yokogawa 96030 Clamp-On probe (20/200A)  Buy Now $259.00
    96031  Yokogawa 96031 Clamp-On probe (50/500A)  Buy Now Sale $267.84
    (Reg. $288.00)
    96032  Yokogawa 96032 Clamp-on-Probe for 700A  Buy Now Sale $302.84
    (Reg. $325.00)
    96033  Yokogawa 96033 Clamp-on-Probe for 50A  Buy Now $236.00
    96034  Yokogawa 96034 Clamp-on-Probe for 3000A  Buy Now $475.00
    96035  Yokogawa 96035 Clamp-on for 3000A (Flexible Type)  Buy Now $596.00
    96036  Yokogawa 96036 Clamp-on Current Probe for 2A measurement  Discontinued
    97010  Yokogawa 97010 Printer with 1 roll thermal paper and 1 battery pack  Buy Now $788.00
    97020  Yokogawa 97020 Floppy disk drive  Discontinued
    97031  Yokogawa 97031 Compact Flash Memory Card (32MB) and PC Card Adapter Discontinued
    97032  Yokogawa 97032 Compact Flash Memory Card(64MB) and PC Card Adapter Discontinued
    97033 Yokogawa 97033 Compact Flash Memory Card(128MB) and PC Card Adapter Discontinued
    97034 Yokogawa 97034 Compact Flash Memory Card(256MM) and PC Card Adapter Discontinued
    97035 Yokogawa 97035 Compact Flash Memory Card(512MB) and PC Card Adapter Discontinued
    97080  Yokogawa 97080 Thermal paper for printer (10 rolls)  Buy Now $88.00
    A1022UP Yokogawa A1022UP Dedicated AC Adapter for AC 120 V Discontinued
    AP240E  Yokogawa AP240E Data Analysis Program  Discontinued