YOKOGAWA CW10 User Manual
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YOKOGAWA CW10 User Manual

YOKOGAWA CW10 User Manual

Clamp-on power meter
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User's
Manual
この取扱説明書は、いつでも使用できるよう
大切に保管してください。
Store this manual in an easily accessible place
for quick reference.
CW10
クランプ電力チェッカ
Clamp-on Power Meter
保証書付
IM CW10-JA: Japanese
IM CW10-EN: English
5th Edition: April 2015 (YMI)

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Summary of Contents for YOKOGAWA CW10

  • Page 1 CW10 User’s クランプ電力チェッカ Manual Clamp-on Power Meter 保証書付 この取扱説明書は、いつでも使用できるよう 大切に保管してください。 Store this manual in an easily accessible place for quick reference. IM CW10-JA: Japanese IM CW10-EN: English 5th Edition: April 2015 (YMI)

  • Page 2: Regarding The Safe Use Of This Product

    If you use the instrument in any way other than as instructed in this manual, the instrument’s protective measures may be impaired. YOKOGAWA is by no means liable for any damage resulting from use of the instrument in contradiction to these cautionary notes.
  • Page 3 • Do not use the instrument if there is any damage to the casing or when the casing is removed. • Use the test leads supplied by Yokogawa with this instrument. • Do not use test leads that have deteriorated or are defective.

  • Page 4: Table Of Contents

    12.4 For the Pollution Control of Electronic and Electrical Products of the People's Republic of China . . . 27 Disk No. CW10 5th Edition: April 2015 All Rights Reserved, Copyright ©2011, Yokogawa Meters & Instruments Corporation Printed in Taiwan...

  • Page 5: Checking The Contents Of The Package

    Checking the Contents of the Package After opening the package, be sure to check the product as instructed below before use. 1. Main Unit: CW10 (including battery) 2. Test leads: 1set (Black and Red) 3. User’s Manual 4. Soft Case...

  • Page 6: Components

    Enter key Black 10.Terminals of test leads Main Unit: CW10 1. Is a precision sensor for detecting currents. 2. When the jaws are open, the light will illuminate. 3. In case voltage is detected by the jaw, the red LED lights up.

  • Page 7: Display (Lcd)

    Display (LCD) Power ON/OFF and Auto power off Check that the meter operates normally. Turn the function switch to the measurement (any) position from OFF. To end measurement, turn the function switch off. <Auto power off> Indication: This instrument automatically turns off about 15 minutes after the last switch operation.

  • Page 8: Making Basic Measurements

    (common). Turn the function switch to the Voltage position. Read the voltage value of display. On Auto Sense mode, the CW10 automatically detects AC or DC. Black Test leads Measuring Current • Do not apply more than 600 ADC or 600 Arms (848.5 Apk).

  • Page 9: Others Function

    Others Function AUTO SENSE Using Auto Sense mode, the CW10 automatically detects AC or DC. (The detection is determined by whichever input is greater.) To select manual mode (Example: DC mode); Use the cursor key to select under “DC” (flash) and then press the ENTER key to confirm.

  • Page 10: Peak Hold (Ac Mode Only)

    Peak Hold (AC mode only) (1) AC Voltage Turn the function switch to the voltage (V) position. After using the ENTER key to confirm AC mode, use the cursor key to select Peak Hold and then press the ENTER key to confirm. Press the ENTER key to switch between PEAK MAX (polarity+) and PEAK MIN (polarity-).
  • Page 11 (2) AC Current Turn the function switch to the current (A) position. After using the ENTER key to confirm AC mode, use the cursor key to select Peak Hold. Press the ENTER key for more than 2 seconds to select PEAK MAX. Press the ENTER key to switch between PEAK MAX (polarity+) and PEAK MIN (polarity-).

  • Page 12: Inrush Current (Ac Mode Only)

    Inrush current (AC mode only) The CW10 has a function for measuring Inrush current. Turn the function switch to the current position. Using the ENTER key to confirm AC mode. Using the cursor key to select Peak Hold (Inrush current) and then press the ENTER key to confirm.

  • Page 13: Dca Zero

    DCA ZERO We recommend that you perform zero adjust (DCA ZERO) before measuring DCA mode. [NOTE] Remove the jaws out of the conductor. Press the HOLD key of right side for more than 2 seconds. After ”----“ is displayed, ZERO adjustment is confirmed. DCA Zero is only available in AUTO SENSE, DC and AC+DC mode.

  • Page 14: Max/Min

    MAX/MIN The minimum and maximum value during measurement are updated (displayed). Using the cursor key to select “MAX/MIN” and then press the ENTER key to MAX/MIN mode. (To cancel the function, press the ENTER key for more than 2 seconds.) [NOTE] HOLD key is pressed in MAX/MIN mode, the MAX and MIN values are not updated.

  • Page 15: Individual Harmonic Mesurement

    "RIGHTWARD" "LEFTWARD" Low pass filter (AC mode only) The CW10 has a function for turning the filter on (use) /off. On ACV or ACA mode (using ENTER key to confirm AC), Using the cursor key to select “LPF” and then press the ENTER key to confirm.

  • Page 16: Measuring Active Power

    No.1 [NOTE] • The “ + ” symbol on the jaw must face on the power source side. • In Auto sense mode, The CW10 can detect ACW or DCW automatically. Overload (over range) Description OL.U: Voltage overload OL.A: Current overload OL.UA: Both Voltage and current overload.

  • Page 17: Phase 3 Wire (Balanced/Unbalanced)

    8.10.2 3 phase 3 wire (balanced/unbalanced) To use two the CW10 <1> Turn the function switch to the Active power position. <2> Connect following connecting diagram. <3> Use the cursor key to select "W" and then press the ENTER key to confirm.

  • Page 18: Phase Rotation

    No.2 Black No.3 8.10.4 Phase Rotation The CW10 can measure (test) phase rotation. (Only if the system frequency is stable.) <1> Turn the function switch to the Active power position. <2> Use the cursor key to select “RST” and then press the ENTER key to confirm.
  • Page 19 Line 1 Line 2 Black Black Line 3 No.1 No.1 <4> “L2” is displayed and then buzzer beeps twice. Switch over the red test lead to connect to the phase Line2 immediately before “L2” disappears. <5> After “L2” disappears, the following testing result is displayed. Indication Explanation (testing result)

  • Page 20: Mesuring Resistance

    8.11 Mesuring Resistance To avoid damage to instrument Turn off the power to the circuit under test before starting measurement in order to prevent any excessive voltage from being applied to the instrument. On measuring resistance , use AUTO SENSE mode to measure three items automatically: Resistance, Continuity check and Diode test [NOTE] Maximum open circuit voltage;...

  • Page 21: Continuity Check

    On ACA mode, Press the HOLD key for more than 2 seconds for zero adjust. See also: Section 8.5 DCA ZERO Alarm during Hold The CW10 beeps continuously and the display will flash if the measured signal is larger than the display reading. (at Voltage, Current and Active power function) To cancel, press the HOLD key.

  • Page 22: Buzzer

    8.14 Buzzer The CW10 beeps once for every valid key-press (operation), and beeps twice for every invalid key-press. 8.15 Additional Power-on Function Hold one of the keys below, and turn the function switch from OFF to any position to configure various function.

  • Page 23: Specifications

    10. Specifications 10.1 General Specifications Display count: 9999 / 6000 Measuring rate: 3 times / sec. Over range indicator: “OL” or “-OL” Auto Power Off: Approx. 15 minute. Low-battery indicator: (four steps) Power supply: 9V alkaline battery (6LR61) Battery life: When using alkaline battery, backlight off Approx.

  • Page 24: Accuracy

    10.2 Accuracy 23± 5°C, 80%RH or less Accuracy: ±(% of reading + digits) (1) Voltage Rms-value detection Resolution Function Range Accuracy* (Maximum reading) 100 V 99.99 V 0.7% + 2 1000 V 999.9 V 1.0% + 5 100 V 99.99 V 50 ≤...
  • Page 25 (3) Peak Hold (AC mode only) Resolution Function Range Accuracy (Maximum reading) 100 V 140.0 V 3.0% + 15 1000 V 1400 V 100 A 140.0 A 3.0% + 15 600 A 850 A PEAK MAX: polarity+, polarity- Maximum input voltage and current: 1000 Vrms, 600 Arms Sine wave, ACV >...
  • Page 26 (7) Active Power Resolution Function Range Accuracy (Maximum reading) 10 kW 9.999 kW* ACW : 2.5% + 11*** 100 kW 99.99 kW DCW : 2.2% + 22*** 600 kW 600.0 kW** The measured value<1.000 kW: add 10digits to the accuracy. ** 600 kW: Guaranteed accuracy (not maximum reading) *** Conditions of accuracy (combination of Voltage and Current range) 10 kW range:...

  • Page 27: Maintenance And After-Sales Service

    How to remove batteries safely: For further details, see “9.2 Battery Replacement”. 12.3 Authorized Representative in the EEA Yokogawa Europe B.V. is the authorized representative of Yokogawa Meters & Instruments Corporation for this product in the EEA. (EEA: European Economic Area) To contact Yokogawa Europe B.V., see the separate...

  • Page 28: For The Pollution Control Of Electronic And Electrical Products Of The People's Republic Of China

    12.4 For the Pollution Control of Electronic and Electrical Products of the People's Republic of China They are applicable only in China. 产品中有毒有害物质或元素的名称及含量 有毒有害物质或元素 部件名称 铅 汞 镉 六价铬 多溴联苯 多溴二苯醚 （Pb） （Hg） （Cd） （Cr (VI)） （PBB） （PBDE） 框架（塑料） × ○...
  • Page 29 • Every effort has been made to ensure accuracy in the preparation of this manual. However, should any errors or omissions come to the attention of the user, please contact Yokogawa. • The contents of this manual is subject to change without prior notice because of improvement in performance or function.
  • Page 30 各国や地域の当社営業拠点の連絡先は、 下記シートに記載されています。 PIM 113-01Z2: お問い合わせ先 国内海外の連絡先一覧 Contact information of Yokogawa offices worldwide is provided on the following sheet. PIM 113-01Z2: Inquiries List of worldwide contacts Compliance with the Radio Waves Act (Republic of Korea) This product complies with the Radio Waves Act (Republic of Korea).

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