YOKOGAWA CW500 User Manual
  1. Manuals
  2. Brands
  3. YOKOGAWA Manuals
  4. Measuring Instruments
  5. CW500
  6. User manual
YOKOGAWA CW500 User Manual

YOKOGAWA CW500 User Manual

Power quality analyzer
Hide thumbs Also See for CW500:
Table of Contents

Advertisement

Quick Links

Download this manual
User's
Manual
CW500
Power Quality Analyzer
IM CW500-01EN
2nd Edition

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the CW500 and is the answer not in the manual?

Questions and answers

Related Manuals for YOKOGAWA CW500

Summary of Contents for YOKOGAWA CW500

  • Page 1 User’s CW500 Manual Power Quality Analyzer IM CW500-01EN 2nd Edition...
  • Page 2 Thank you for purchasing the CW500 Power Quality Analyzer. This user’s manual explains the features and operating procedures of the CW500. To ensure correct use, please read this manual thoroughly before beginning operation. Keep this manual in a safe place for quick reference in the event that a question arises.
  • Page 3 • Every effort has been made in the preparation of this manual to ensure the accuracy of its contents. However, should you have any questions or find any errors, please contact your nearest YOKOGAWA dealer. • Copying or reproducing all or any part of the contents of this manual without the permission of YOKOGAWA is strictly prohibited.

  • Page 4: Table Of Contents

    Screens and Screen Configuration .......3-6 Chapter 4 Recording Starting and Stopping Recording ......4-1 Starting to Record with “Quick start guide” ...4-3 Chapter 5 Setup Settings ..............5-1 Basic Setup ............5-2 Measurement Setup ...........5-12 Recording Setup ..........5-25 Other Settings .............5-31 Saved Data ............5-36 IM CW500-01EN...
  • Page 5 Chapter 9 PC Software for Configuration and Analysis PC Software for Configuration and Analysis ..9-1 Chapter 10 Troubleshooting 10.1 Troubleshooting ..........10-1 10.2 Error Messages and Corrective Actions .....10-3 Appendix When Using 96030, 96033, or 96036 ......App-1 Index IM CW500-01EN...

  • Page 6: Chapter 1 Product Outline

    See “Displaying Instantaneous, Integrated, and Demand.” Displaying Vectors and Checking the Wiring Displays a vector diagram of voltage and current for the measurement channel and checks the wiring. See “Vector.” IM CW500-01EN...
  • Page 7 “Waveforms.” channel. See “Harmonic Analysis.” Displaying Power Supply Quality Events Displays the swell, dip, interruption, transient, inrush current, and flicker of the measured voltage. See “Power Supply Quality.” Setup (SET UP) Configures the CW500 and measurement. See “Setup.” IM CW500-01EN...

  • Page 8: Features

    This product supports single-phase two-wire (four systems), single-phase three-wire (two systems), three-phase three-wire (two systems), and three-phase four-wire measurement lines. Demand Measurement You can monitor in a simplified form the usage condition so that the specified target value (contract demand) is not exceeded. IM CW500-01EN...
  • Page 9 (Ni-MH) batteries, use the battery manufacturer’s charger to charge them. You cannot charge them on the CW500. If a power failure occurs while the CW500 is running off of AC power, the power supply is automatically switched to battery power.

  • Page 10: System Configuration Diagram

    System Configuration Diagram Current input AC voltage input Power cord Digital output (1 ch) to recorder or alarm Analog input (2 ch) from thermometer or illuminometer AA alkaline batteries (LR6) AA Ni-MH batteries SD memory card (Option) IM CW500-01EN...

  • Page 11: Measurement Procedure

    Measurement Procedure Measurement preparation Getting Started Guide, “Making Preparations for Measurements” Page 5 Connecting cords and sensors to the CW500 Getting Started Guide, “Connecting a Voltage Probe and Clamp-on Probe” Page 15 Turning the power on Getting Started Guide, “Power Supply” Page 7...

  • Page 12: Chapter 2 Component Names

    Chapter 2 Component Names Display (LCD) and Control Keys Display (LCD) Control keys IM CW500-01EN...

  • Page 13: Connectors

    A1, A2, A3, A4 Three-phase three-wire 3A 3P3W3A V1, V2, V3 A1, A2, A3 Three-phase four-wire 3P4W×1 VN, V1, V2, V3 A1, A2, A3 * Current terminals that are not used in wiring can measure only rms values and harmonics. IM CW500-01EN...

  • Page 14: Side Panel

    Side Panel With the Connector Cover Closed SD memory card area USB area Analog input/digital output area With the Connector Cover Open SD memory card slot USB port Analog input/digital output terminals IM CW500-01EN...

  • Page 15: Voltage Probe And Current Clamp-On Probe

    Current Clamp-on Probe Barrier Barrier: A mark for securing the minimum required creep and spatial distance to prevent electric shock during operation. When taking a measurement, be careful that your finger or the like does not cross over the barrier. IM CW500-01EN...

  • Page 16: Chapter 3 Basic Operation

    Arrow keys Selects items and changes START/STOP key displays. Starts or stops recording. Status LED ESC/RESET key Shows the recording status. Resets to the original setting. Green solid: Recording Green blinking: Standby Red blinking: Backlight off IM CW500-01EN...
  • Page 17 Displays voltage and current Displays instantaneous waveforms values, integrated Harmonic analysis key values, and “demand” Displays harmonic voltage, harmonic current, and Vector key harmonic power Displays phases QUALITY key Displays the occurrence of swell, dip, interruption, transient, inrush current, and flicker IM CW500-01EN...

  • Page 18: Marks Displayed In The Top Area Of The Lcd

    Possible to record to internal memory. This appears when recording is started without an SD memory card inserted. Recording to internal memory. Not enough space in internal memory to record. Waiting to record. Recording measurement values. Recording medium is full. USB can be used. Bluetooth® can be used. IM CW500-01EN...

  • Page 19: Display Symbols

    Long term voltage 1-minute voltage flicker flicker flicker (1min) 1 The V and VL displays can be customized when 3P4W is selected. 2 An appears only when 3P4W is selected. 3 PA and C can be displayed by customization. IM CW500-01EN...

  • Page 20: Backlight And Contrast Adjustment

    ENTER to confirm. To cancel the adjustment, press ESC or LCD again. Brightness adjustment Backlight brightness can be changed to any of the 11 available levels. Contrast adjustment Contrast can be changed to any of the 11 available levels. IM CW500-01EN...

  • Page 21: Screens And Screen Configuration

    Each time you press function key F1, the display screen changes. W (instantaneous value) Wh (Integrated value) Demand Customize Select and change the items to be displayed. Trend Measurement variation trends are displayed on a graph. Zoom Zoom in on selected items. 4 windows 8 windows IM CW500-01EN...
  • Page 22 3.5 Screens and Screen Configuration Vector Switching the Vector Screen Wiring check Displays the results of check items Wiring diagram Displays the diagram of the selected wiring Waveform Switching the Waveform Screen IM CW500-01EN...
  • Page 23 3.5 Screens and Screen Configuration Harmonics Switching the Harmonic Analysis Display Items Voltage, Linear, Overall display Current Power List, percentage content Logarithm Zoom Phase angle Rms value Current Power IM CW500-01EN...
  • Page 24 3.5 Screens and Screen Configuration Power Quality Switching the Quality Display Items Event Flicker Setup Switching the Setup Display Items Use the left and right arrow keys switch between screens. IM CW500-01EN...

  • Page 25: Chapter 4 Recording

    SETUP menu. Start now Recording starts immediately using the current settings. <Procedure> Using the up and down arrow keys, select “Quick start guide” or “Start now,” and press ENTER. To cancel, press ESC. IM CW500-01EN...

  • Page 26: Stopping Recording

    The location where measured data is being recorded to is Save to displayed. Record items Measurement items being recorded are displayed. <Procedure> Using the up and down arrow keys, select CANCEL or STOP, and then press ENTER. You can also cancel by pressing ESC. IM CW500-01EN...
  • Page 27 See page 4-5. Connect to the circuit to be measured. * Read and follow the safety precautions. See the Getting Started Guide (IM CW500-02EN). Check the test environment. * Performs a CW500 self-diagnosis, wiring status check, and connected sensor identification.

  • Page 28: 4.2 Starting To Record With "Quick Start Guide

    See page 5-29. Select the rec. method. See page 4-9. Ready. Recording will start. When recording starts, the screen shows REC, and the Logging LED turns green. To stop recording, press START/STOP, and follow the instructions on the screen. IM CW500-01EN...
  • Page 29 L3(T) Orientation of the current clamp-on probe Load L1(R) L1(R) 3P4W L2(S) L2(S) Arrow: load Load L3(T) L3(T) 3P4W Power * If clamped in the reverse direction, the polarity of the active power (P) value will be reversed. IM CW500-01EN...
  • Page 30 Select the OK or NG of a test result to see the details. Self-diagnosis Displays the results of a system operation check. Sensor detection Automatically detects connected current probes and sets the range to their maximums. IM CW500-01EN...
  • Page 31 Current • Power factor (PF, • Current direction mark of the current absolute value) of clamp-on probe is not matched with phase each channel is 0.5 the current-to-load direction. or higher. • Clamp-on probe is not connected • Active power (P) correctly. of each channel is positive. IM CW500-01EN...
  • Page 32 If detection fails on the channel connected to the current clamp-on probe that failed to be detected the last time, the clamp-on probe may be malfunctioning. If you suspect a malfunction, stop using it immediately, and see chapter 10, “Troubleshooting,” on page 10-1. IM CW500-01EN...
  • Page 33 If the date and time are set as shown above, recording will be performed during the time slots (i) to (viii) below. Recording is not performed from 18:00 to 8:00 of the next day. (i) 8:00 to 18:00 on August 1, 2013 (ii) 8:00 to 18:00 on August 2, 2013 (iii) 8:00 to 18:00 on August 3, 2013 (iv) 8:00 to 18:00 on August 4, 2013 (v) 8:00 to 18:00 on August 5, 2013 (vi) 8:00 to 18:00 on August 6, 2013 (vii) 8:00 to 18:00 on August 7, 2013 (viii) 8:00 to 18:00 on August 8, 2013 IM CW500-01EN...
  • Page 34 In this condition, pressing the up and down arrow keys will increment or decrement the tenth digit. To confirm the change, press ENTER. To cancel the settings and return to the previous screen, press ESC. 4-10 IM CW500-01EN...
  • Page 35 (included in the measurement settings), and filter coefficient (ramp) for flicker measurement must be set in advance. Set these items from the SETUP menu. Note that the “+ Clamp” option clamp- on probe setting is automatically set to OFF. 4-11 IM CW500-01EN...

  • Page 36: Chapter 5 Setup

    Basic Measurement Recording Saved Data Others (Wiring) (Demand) (REC item) (Rec data) (Environment) (Voltage) (Harmonics) (Rec method) (System settings) (System settings) (Current) (Power quality) (Manual/ Constant rec. Time period rec.) (External (Flicker) input DC) (Phase advance (Frequency) capacitor) IM CW500-01EN...

  • Page 37: Basic Setup

    Basic Setup <Procedure> → Press SETUP. Use the left and right arrow keys to select the Basic tab. IM CW500-01EN...
  • Page 38 Use the up and down arrow keys to move to +Clamp. Press ENTER → to show a pull-down menu. Use the up and down arrow keys to select → the optional clamp. Press ENTER to confirm or ESC to cancel. IM CW500-01EN...
  • Page 39 <Procedure> After showing the wiring diagram, press F1 (previous wiring system) or → F2 (next wiring system) to change the wiring system. Press ENTER to confirm or ESC to cancel. IM CW500-01EN...
  • Page 40 Press ENTER to confirm or ESC to cancel. VT Ratio Set this when an external VT (voltage transformer) is installed in the system. The VT ratio will be applied to all voltage measurements. Settings 0.01 to 9999.99 (1.00 * Default value IM CW500-01EN...
  • Page 41 VT or CT with specifications appropriate for the measurement line voltage and current to measure the secondary side and display the value on the primary side. Example of single-phase two-wire (1 system) (1P2W × 1) Power Load IM CW500-01EN...

  • Page 42: Default Values

    When you move to the Nominal V item, you can press F1 (default values) to show a list of typical nominal voltages that you can choose from. Settings 100V/101V/110V/120V/200V/202V/208V/220V/230V/ 240V/277V/346V/380V/400V/415V/480V/600V <Procedure> → Use the arrow keys to select nominal voltage. Press ENTER to confirm or ESC to cancel. IM CW500-01EN...
  • Page 43 <Procedure> → Use the arrow keys to move to Clamp. Press ENTER to show a pull- → down menu. Use the arrow keys to select the current clamp-on probe. → Press ENTER to confirm or ESC to cancel. IM CW500-01EN...
  • Page 44 Use the arrow keys to move to CT Ratio. Press ENTER to show a → → value entry window.* Use the arrow keys to select the CT ratio. Press ENTER to confirm or ESC to cancel. * The input range is shown in a pop-up. IM CW500-01EN...
  • Page 45 DUT is connected or if the type fails to be detected, this will not work. If this happens, an error message appears in a pop-up, and Clamp, A Range, and CT ratio settings will be cleared. For details on sensor detection, see section 4.2, “Sensor Detection.” 5-10 IM CW500-01EN...
  • Page 46 Press ENTER to confirm or ESC to cancel. Frequency Set the nominal frequency for the DUT. If the voltage frequency cannot be determined, such as during a power failure, the CW500 measures based on the preset nominal frequency. Settings 50Hz...

  • Page 47: Measurement Setup

    Measurement Setup <Procedure> → Press SETUP. Use the left and right arrow keys to select the Measurement tab. Demand Measurement Settings 5-12 IM CW500-01EN...
  • Page 48 Use the arrow keys to move to Target. Press ENTER to show a value → → entry window.* Use the arrow keys to enter the target value. Press ENTER to confirm or ESC to cancel. * The input range is shown in a pop-up. 5-13 IM CW500-01EN...
  • Page 49 Use the up and down arrow keys to move to Inspection. Press ENTER → to show a value entry window.* Use the arrow keys to select the time. → Press ENTER to confirm or ESC to cancel. * The input range is shown in a pop-up. 5-14 IM CW500-01EN...
  • Page 50 500 kW. If Inspection is set to 15 min, the buzzer will sound after 15 minutes at measurement cycle 2. (kW) 600kW 500kW 500kW 400kW Interval 1 Interval 2 Inspection Inspection Inspection Inspection cycle cycle cycle cycle 5-15 IM CW500-01EN...
  • Page 51 Use the up and down arrow keys to move to MAX hold. Press ENTER → to show a pull-down menu. Use the up and down arrow keys to select → ON or OFF. Press ENTER to confirm or ESC to cancel. 5-16 IM CW500-01EN...
  • Page 52 F3 (default). Press F2 (A/V [%]) to switch between the allowable value entry window of harmonic current and that of harmonic voltage. To return to the measurement setup screen, press F1 (return). 5-17 IM CW500-01EN...
  • Page 53 The default value is the peak voltage (300%). Because the InrushCurrent threshold is set as a percentage of the current range, if the current range is changed, the threshold current also changes. Keep these in mind. 5-18 IM CW500-01EN...
  • Page 54 Use the arrow keys to enter the voltage. Press ENTER to confirm or ESC to cancel. * The input range is shown in a pop-up. Example of Transient Detection For details, see “Displaying Recorded Events” on page 6-27. Threshold (Voltage) Voltage waveform 5-19 IM CW500-01EN...
  • Page 55 Use the up and down arrow keys to move to InrushCurrent. Press → ENTER to show a value entry window.* Use the arrow keys to enter a percentage of the maximum value of the current range. * The input range is shown in a pop-up. 5-20 IM CW500-01EN...
  • Page 56 Use the up and down arrow keys to move to DIP. Press ENTER to → show a value entry window.* Use the arrow keys to enter a percentage of the nominal voltage. * The input range is shown in a pop-up. 5-21 IM CW500-01EN...
  • Page 57 For details, see “Displaying Recorded Events” on page 6-27. Rms value (2) Rms value (4) Rms value (6) Rms value (8) Voltage waveform Rms value (1) Rms value (3) Rms value (5) Rms value (7) Rms value (9) Rms waveform Hysteresis Threshold 5-22 IM CW500-01EN...
  • Page 58 * Default value <Procedure> → Use the up and down arrow keys to move to Filter. Press ENTER to → → show a pull-down menu. Select the appropriate filter coefficient. Press ENTER to confirm or ESC to cancel. 5-23 IM CW500-01EN...
  • Page 59 Use the up and down arrow keys to move to Target PF. Press ENTER → to show a value entry window.* Use the arrow keys to enter the target power factor. * The input range is shown in a pop-up. 5-24 IM CW500-01EN...

  • Page 60: Recording Setup

    Recording time can be extended by setting unnecessary record items to “Do not record.” For details, “Possible Recording Time” on page 5-30. Power This is fixed to “Record.” Power measurement items are always recorded. 5-25 IM CW500-01EN...
  • Page 61 Use the up and down arrow keys to move to Harmonics or Event. → Press ENTER to show a pull-down menu. Use the up and down arrow → keys to select Record or Do not record. Press ENTER to confirm or ESC to cancel. 5-26 IM CW500-01EN...
  • Page 62 Harmonic power (1 to 50th order) Voltage/current Rms voltage per half-cycle ● fluctuation Rms current per half-cycle data Event detection date and time Event type Event type ● data Measured values at event detection Waveform data Voltage/current waveforms ● 5-27 IM CW500-01EN...
  • Page 63 60 Hz nominal frequency. <Procedure> → Use the arrow keys to move to Interval. Press ENTER to show a → selection window.* Use the arrow keys to enter the recording interval. → Press ENTER to confirm or ESC to cancel. 5-28 IM CW500-01EN...
  • Page 64 Press ENTER to confirm or ESC to cancel. Manual The CW500 records during the period from when you start recording to when you stop recording using the START/STOP key. Constant rec. Set the time to start and stop recording. The CW500 records repeatedly during the period between the start and stop times at the specified interval.
  • Page 65 The maximum event data size that can be saved per recording is 1 GB. * The SD memory cards that can be used with this instrument are those provided by YOKOGAWA. 5-30 IM CW500-01EN...

  • Page 66: Other Settings

    Use the up and down arrow keys to move to Language. Press ENTER → to show a pull-down menu. Use the up and down arrow keys to select → the language. Press ENTER to confirm or ESC to cancel. 5-31 IM CW500-01EN...

  • Page 67: Date Format

    <Procedure> → Use the arrow keys to move to CH color. Press ENTER to show a → → selection window.* Use the arrow keys to select the color. Press ENTER to confirm or ESC to cancel. 5-32 IM CW500-01EN...
  • Page 68 Press ENTER to confirm or ESC to cancel. ID Number Set the CW500 ID number. Assigning numbers in an organized manner will make it convenient to analyze recorded data when several CW500s are used or when several locations are measured periodically using a single CW500.
  • Page 69 Use the up and down arrow keys to move to Bluetooth. Press ENTER → to show a pull-down menu. Use the up and down arrow keys to select → on or off. Press ENTER to confirm or ESC to cancel. 5-34 IM CW500-01EN...
  • Page 70 Press ENTER to confirm or ESC to cancel. Backlight Select whether to turn off the backlight automatically when there is no user interaction for a given period. If the CW500 is running off of batteries, “Disable auto-off” cannot be selected in order to save battery power. Mode...

  • Page 71: Saved Data

    We recommend that you save data to an SD memory card. Up to three measured data files and eight other files can be saved to the internal memory. Recorded Data Operation <Procedure> → Use the up and down arrow keys to move to the desired operation. Press ENTER to confirm. 5-36 IM CW500-01EN...

  • Page 72: Delete Data

    Internal/SD card Press F3 to switch between the SD memory card and internal memory. The selected medium is displayed in the upper left of the screen. Switching the screen clears all the selected check boxes. 5-37 IM CW500-01EN...
  • Page 73 Number of recorded settings and * Internal Settings/ screenshots memory only Print * The maximum number of files that screen can be saved in the internal memory is eight. Back Press F1 (back) to return to the Saved data screen. 5-38 IM CW500-01EN...
  • Page 74 Press F3 (SD memory card) to view the data stored in the transfer destination SD memory card. To return to the transfer data selection screen, press F3 (internal memory) again. Switching the screen clears all the selected check boxes. 5-39 IM CW500-01EN...
  • Page 75 Press F2 to show a format confirmation message. Use the left and → right arrow keys to select Yes or NO. Press ENTER to confirm. Format Press F2 (format) to show a confirmation message. Press ENTER (yes) to start formatting. 5-40 IM CW500-01EN...
  • Page 76 Free size Press F4 (free space) to display a pop-up screen showing the selected medium information. Press ENTER (close) to return to the format screen. For details, see “Space” on page 5-38. Back Press F1 (back) to return to the Saved data screen. 5-41 IM CW500-01EN...

  • Page 77: System Settings

    If files are deleted or the folder or files are renamed from a PC or the like, data operations on the CW500 and analysis using CW500 Viewer will no longer be possible. Do not change folder names or file names from a PC.
  • Page 78 (0000 to 9999) M: Internal memory Power quality data Event type File name: EVT 0000 .CW5 Waveform 0000 .CW5 V/A change 0000 .CW5 Dest. code File No. S: SD memory card (0000 to 9999) M: Internal memory 5-43 IM CW500-01EN...

  • Page 79: Save Settings

    Data location Scroll bar <Procedure> → Press F2 to show a save confirmation message. Use the left and right → arrow keys to select Yes or NO. Press ENTER to confirm. 5-44 IM CW500-01EN...
  • Page 80 Hysteresis threshold Frequency Transient threshold Swell threshold Power quality Other Setup Dip threshold Settings Interruption threshold Environment Date format Inrush current threshold ID number Flicker Filter coefficient (ramp) System Phase advance settings Buzzer Target power factor capacitor 5-45 IM CW500-01EN...
  • Page 81 Press F2 to show a read confirmation → → message. Use the left and right arrow keys to select Yes or NO. Press ENTER to confirm. When you select a data file you want to read, the corresponding check box is selected. 5-46 IM CW500-01EN...
  • Page 82 Free size Press F4 (free space) to display a pop-up screen showing the selected medium information. Press ENTER (close) to return to the data transfer screen. For details, see “Space” on page 5-38. Back Press F1 (back) to return to the Saved data screen. 5-47 IM CW500-01EN...

  • Page 83: Chapter 6 Display Items Of Each Screen

    Channel 1 measurement Channel 2 measurement Channel 3 measurement Optional clamp-on probe measurement Elapsed time/ selected interval Total (Ch1+Ch2+Ch3) Multiple measurement values are displayed on a single screen. The displayed items and their display positions can be changed using keys. IM CW500-01EN...
  • Page 84 2 “An” appears only when 3P4W is selected. 3 PA and C can be displayed pressing F4 (customization). Line voltages are converted into phase voltages to determine currents and phase angles for “PA” of 3P3W3A. Example: Instantaneous values measured under 1P3W-2 (2 systems) IM CW500-01EN...
  • Page 85 1, 2 and 1, 2 and 3ch of 3ch of (V12/A1) (V23/A2) (V12/A3) (V23/A4) 1 system 2 systems Sum of Sum of 1, 2 and 3ch of 1, 2 and 3ch of Total values 1 system 2 systems IM CW500-01EN...
  • Page 86 The display range is from the present to the past 60 minutes. For details, see “Displaying a Trend Graph” on page 6-7. Customize Press F4 (customize) to change the displayed items and their display positions. For details, see “Changing Displayed Items and Display Positions” on page 6-8. IM CW500-01EN...
  • Page 87 Use the arrow keys to move to the item you want to display. Press → ENTER to show a selection menu. Use the arrow keys to select an → item. Press ENTER to confirm or ESC to cancel. IM CW500-01EN...
  • Page 88 Inst value on ch2 of system 1 Inst value on ch1 of system 2 Inst value on ch2 of system 2 Different colors for each channel Elapsed time You can select measured values and graph their variation with time. IM CW500-01EN...
  • Page 89 Selecting CH will display the trend graph of each channel. If you select “Σ” when rms current value (A) is selected for 3P4W, neutral line currents (An) will be displayed on the trend graph. List Display Press F3 (list) to display all the values in a list. IM CW500-01EN...
  • Page 90 Likewise, power and phase advance capacitor measurement items can only be changed to other power and phase advance capacitor measurement items. For details on the symbols displayed on the screen, see “Displaying a List of Measurements” on page 6-2. IM CW500-01EN...

  • Page 91: Integrated Value (Wh)

    : total amount Σ : sum per system The power that flows during a given period is displayed as integrated power. Display Symbol + Consumption + Consumption Active Volt-ampere WQ Var hours energy hours – Regeneration – Lead – Regeneration IM CW500-01EN...
  • Page 92 Use the up and down arrow keys to change the displayed channels. For the relationship between wiring and channels, see “Wiring System Settings” in section 5.2. Demand Press F1 (demand) to switch to a screen that shows demand values. For details, section 6.3, “Demand,” on the next page. 6-10 IM CW500-01EN...

  • Page 93: Demand

    (WP+ x 1 hour) Interval is calculated as time elapses. The maximum demand recorded during a measuring DEM Max period is displayed. The display is updated each time Recorded date the measured value exceeds the maximum demand. 6-11 IM CW500-01EN...
  • Page 94 Time left Target value Estimated value A warning buzzer sounds when the estimated value exceeds the target value after the inspection cycles Demand value have been completed. (Present) Interval Inspection Inspection Inspection cycle cycle cycle Saved point 6-12 IM CW500-01EN...
  • Page 95 Demand value Demand value Start of demand End of demand/ Rec start time Most recent recording time Start of demand and recording start date and time are displayed when the graph does not fit on one screen. 6-13 IM CW500-01EN...

  • Page 96: Vector

    V1 phase as the reference (0°). Solid circle line: Maximum voltage/current range Phase angle (leading) -0° to –180° Vector display rms voltage (solid line) rms current (dotted line) ±180° ±0° Phase angle (lagging) +0° to +180° 6-14 IM CW500-01EN...
  • Page 97 Ch1: ±0° Ch1: +30° Ch1: ±0° Ch1: ±0° Ch2: +120 ° Ch2: +150° Ch2: +120 ° Ch2: +120 ° Ch3: -120 ° Ch3: –90° Ch3: -120 ° Ch3: -120 ° The following figure is an example of 3P4W. 6-15 IM CW500-01EN...
  • Page 98 Press F4 (wiring check) to display the results of the wiring check. If measuring at site with extremely poor power factor, this check may fail even if the wiring is correct. For details, see “Wiring Check” in section 4.2. 6-16 IM CW500-01EN...

  • Page 99: Waveform

    Hz and up to 12 cycles at 60 Hz. If switched to the waveform screen, the scale is automatically set so that the waveform amplitude and period are displayed at their maximum size. Changing the Displayed Waveforms Use the up and down arrow keys to change the displayed waveforms. 6-17 IM CW500-01EN...
  • Page 100 × Magnification Press F3 (t×magnification) to set the time-axis (horizontal) magnification. 1x, 2x, 5x, 10x full scale Press F4 (full scale) to set a magnification that displays the voltage and current waveforms at their maximum size. 6-18 IM CW500-01EN...

  • Page 101: Harmonics

    Voltage total harmonic distortion is displayed while “V” is displayed. Current total distortion factor is displayed while “A” is displayed. Total harmonic distortion is calculated according to the selected THD calculation method. System total/total Active power of ΣP each channel — — Active power 6-19 IM CW500-01EN...

  • Page 102: Bar Graph Display

    15th are displayed on one screen. Press the left and right arrow keys to scroll the display range. The fundamental waveform does not scroll. The dark orange area of the scroll bar shows the present display range. 6-20 IM CW500-01EN...
  • Page 103 Exceeding the Displayed when measured values exceed the preset threshold allowable range. This is preset according to IEC61000-2-4 Class 3. To Allowable change the range, select “Edit allowable range” in the range harmonic items of SETUP. 6-21 IM CW500-01EN...
  • Page 104 15th harmonic. Voltage, current, and power harmonics can be displayed separately in bar graphs. When zoomed up to the 15th harmonic, use the left and right arrow keys to scroll the screen (change the display range). 6-22 IM CW500-01EN...
  • Page 105 If there is a space between the letter P and the number, only the system number is displayed. In this case, the measured values are the sum of each system. If only P is displayed, the measured values are total sums. 6-23 IM CW500-01EN...
  • Page 106 If V (voltage) or A (current) is selected, select percentage content, phase angle (in reference to V1 (0°)), or rms value. If P (ΣP) (power) is selected, select percentage content, phase angle (current-to-voltage difference between channels), or power. V/A/P/ΣP Press F4 (V/A/P/ΣP) to select the harmonic analysis parameter (voltage, current, power, or system total or total sum power). 6-24 IM CW500-01EN...

  • Page 107: Power Quality

    Inrush current occurs when may shut down, Voltage motors and other loads are or PCs and office applied causing the current to appliances may be dip. reset. Lightning and other electric Voltage surges interrupt the power interruption supply. 6-25 IM CW500-01EN...
  • Page 108 Flicker of the phases of the causing motor power line or use of instability, circuit unbalanced installation breaker tripping, equipment. This causes and heating due to voltage dips. transformer overload. 6-26 IM CW500-01EN...
  • Page 109 The start of an event is detected when any of the voltages of the relevant channels for the wiring system meets the event condition. The end of the event is detected when the condition is no longer met by any of the channels. 6-27 IM CW500-01EN...
  • Page 110 Rms value (4) Rms value (6) Rms value (8) Measured waveform Rms value (1) Rms value (3) Rms value (5) Rms value (7) Rms value (9) Threshold Hysteresis (2) (3) Rms waveform Start of swell End of swell Duration 6-28 IM CW500-01EN...
  • Page 111 (deepest) value is recorded. If the values are also the same, the one lasting the longest is recorded. There are no priority levels between connected channels. → → → → → [Highest priority] Voltage transient Interruption Swell Inrush current 6-29 IM CW500-01EN...
  • Page 112 Use the up and down arrow keys to vertically scroll the screen thereby changing the displayed area. Flicker Press F1 (flicker) to switch to a screen that shows flicker values. For details, see “Displaying a List of Flicker Measurements” on the next page. 6-30 IM CW500-01EN...
  • Page 113 This is useful for power quality survey or study. Severity of short-term flicker measured over 10 minutes. The maximum Pst value measured since the start of Pst,MAX measurement. The display is updated every time the measured value exceeds the previous maximum value. 6-31 IM CW500-01EN...
  • Page 114 The most recent measured value is displayed at the right end (0 minutes) and shifts to left as time passes. Elapsed time Measured values in the recent 120 minutes can be displayed. 6-32 IM CW500-01EN...
  • Page 115 The recording start date and time are displayed when the Plt trend graph does not fit on one screen. Display Symbol The maximum Plt value measured since the start of Maximum measurement. The display is updated every time the measured value exceeds the previous maximum value. 6-33 IM CW500-01EN...

  • Page 116: Chapter 7 Other Features

    Even when data is being held, you can switch the display to view the measured values of other screens. Even when display updating is stopped during recording, the CW500 continues to record measurement values and events. Key Lock...

  • Page 117: Auto Power Off

    The CW500 automatically turns off if you do not perform any operations for about 5 minutes. It does not turn off while the CW500 is recording. To turn the power on again, press the power key. You can also disable the this function by selecting Disable auto-off from the SETUP menu.
  • Page 118 The CW500 retains all the settings used in the previous measurement and starts in the same condition when the power is turned on. The default settings are used when the CW500 is turned on the first time after purchase. Quick start guide Press START/STOP to run the Quick start guide.

  • Page 119: Chapter 8 Connecting To Peripheral Devices

    For information on how to handle SD memory cards, refer to the user’s manual provided with the card. To prevent problems, only save data files of the CW500 to the SD memory card. Delete unnecessary files in advance. Internal memory/...

  • Page 120: Signal Control With External Devices

    • Apply voltage in the range of ±11 V to the input terminals and in the range of 0 to 30 V (50 mA, 200 mW) to the output terminals. Exceeding these ranges can damage the CW500. • The L terminals of each channel are connected internally. Do not simultaneously connect different ground levels to the L terminals.
  • Page 121 Input terminals are used to monitor voltage output signals from temperature sensors or the like. They are useful when you need to simultaneously measure a signal output from another device and the anomalies that occur on that power supply. Number of channels: 2 Input resistance: Approx. 225.6 kΩ IIM CW500-01EN...
  • Page 122 → → → → → [Highest priority] Transient Interruption Swell Inrush current Output format: Open collector output Maximum input: 30 V, 50 mA, 200 mW Output voltage: Hi 4 to 5 V 0 to 1 V OUTPUT IM CW500-01EN...

  • Page 123: Supplying Power Through Measurement Lines

    The current capacity is large on the primary side and is dangerous. • Connect the probe after checking that the instrument is turned off. • Connect the main unit end of the cord first. Firmly insert the probe up to the base. • If the probe cracks or the metal parts become exposed, stop using it immediately. IIM CW500-01EN...
  • Page 124 Turn on the power supply adapter’s power switch. Turn on the CW500 power switch. To remove the power supply adapter from the CW500, reverse the steps above. For details on how to operate the power supply adapter, see the user’s manual for the adapter.

  • Page 125: Chapter 9 Pc Software For Configuration And Analysis

    Analysis The software “CW500VIewer” can be used to analyze the data recorded on the CW500 and also configure the CW500. You can automatically create graphs and lists from recorded data with a single click, convert recorded data to CSV format, centrally manage setup data and recorded data of several CW500s, and output data expressed in crude oil and CO2 equivalent values in reports.
  • Page 126 9.1 PC Software for Configuration and Analysis • Trademarks • Windows is a registered trademarks or trademark of Microsoft Corporation in the United States and/or other countries. The latest software is available for download from the following webpage. http://www.yokogawa.com/ymi/ IM CW500-01EN...

  • Page 127: Chapter 10 Troubleshooting

    If you problem is still not solved • Disconnect the AC power cord, and remove all the batteries. Load the batteries again, connect the AC power, and turn on the power. If the CW500 still fails to turn on, it may be malfunctioning. Keys do not work. • Check that key lock is not activated.
  • Page 128 • Check the number of files that have been saved to the SD memory card and the capacity. • Check that the SD memory card is compatible with the CW500. • Check that the SD memory card operates on known hardware. Downloading and Check that the CW500 is connected properly to the • configuration are PC with a USB cord. not possible through • Use the communication application software USB communication.
  • Page 129 If a malfunction is found, stop using the CW500 or probe immediately. Battery level is low.

  • Page 130: 10.2 Error Messages And Corrective Actions

    The file may be the card or the CW500 may be malfunctioning if the damaged. setup file is in the internal memory. If the CW500 is malfunctioning, stop using it immediately. Available memory is • Check the free space on the SD memory card and in low.
  • Page 131 PC or the like. Delete the files or format stopped. the SD memory card, or use another SD memory card that has been formatted on the CW500. Then, resume recording. For details, see “Recorded Data Operation” in section 5.6.

  • Page 132: Appendix

    Appendix When Using 96030, 96033, or 96036 To use a YOKOGAWA’s 96030, 96033, or 96036 current clamp-on probe with the CW500, you need a 99073 banana-DIN adapter. The sensor identification function cannot be used. Configure the clamp-on probe settings manually.

  • Page 133: Index

    Data folder ........5-43 DATA HOLD ........7-1 DATA HOLD key ......... 3-1 Data transfer ........8-1 Date format ........5-32 DC Range ..........5-11 Delete data ........5-37 Demand ........3-6,6-10 DEM G ..........6-12 DEM Guess ........6-11 Index-1 IM CW500-01EN...
  • Page 134 Starting recording ....... 4-1 Page Start now ..........4-1 START/STOP key ....... 3-1 NG judgment ........4-7 Stopping recording ......4-2 Nominal V ........... 5-7 SWELL ..........5-20 System reset........5-35 Page Others ..........5-1 Output terminal ........8-4 Index-2 IM CW500-01EN...
  • Page 135 VT/CT ..........5-6 VT Ratio ..........5-5 Page Waveform ........3-7,6-17 Waveform key ........3-2 Wh ..........6-4,6-9 Wiring check ........4-7 Wiring system ....... 4-5,5-3 W/Wh ..........6-1 W/Wh key ........... 3-2 Page Zoom ..........6-4 Index-3 IM CW500-01EN...

Table of Contents