Hioki 3274 Instruction Manual
  1. Manuals
  2. Brands
  3. Hioki Manuals
  4. Test Equipment
  5. 3274
  6. Instruction manual
Hioki 3274 Instruction Manual

Hioki 3274 Instruction Manual

Clamp on probe
Hide thumbs Also See for 3274:
Table of Contents

Advertisement

Quick Links

Download this manual
INSTRUCTION MANUAL
For...は専用機種。複数の場合は「/」で区切る。
不要の場合はとる。
形名を入力。 複数の場合は「/」で区切る。
3274
品名を入力。
CLAMP ON PROBE

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the 3274 and is the answer not in the manual?

Questions and answers

Subscribe to Our Youtube Channel

Related Manuals for Hioki 3274

Summary of Contents for Hioki 3274

  • Page 1 INSTRUCTION MANUAL For...は専用機種。複数の場合は「/」で区切る。 不要の場合はとる。 形名を入力。 複数の場合は「/」で区切る。 3274 品名を入力。 CLAMP ON PROBE...

  • Page 3: Table Of Contents

    Contents Introduction Inspection Notes on Safety Notes on Use Chapter 1 Overview 1.1 Product Overview 1.2 Features 1.3 Names of Parts 1.4 Parts of the Sensor Chapter 2 Specifications 2.1 Product Specifications 2.2 Standards Applying Chapter 3 Measurement Procedure 3.1 Notes on Use 3.2 Preparations for Measurement 3.3 Demagnetizing and Zero Adjustment 3.4 Measurement Procedure...

  • Page 5: Introduction

    ―――――――――――――――――――――――――――――――――――――― Introduction Thank you for purchasing this HIOKI 3274 CLAMP ON PROBE. To obtain maximum performance from the device, please read this manual first, and keep it handy for future reference. Inspection When you receive the device, inspect it carefully to ensure that no damage occurred during shipping.
  • Page 6 ―――――――――――――――――――――――――――――――――――――― Safety Symbols This manual contains information and warnings essential for safe operation of the device and for maintaining it in safe operating condition. Before using the device, be sure to carefully read the following safety notes. symbol printed on the device indicates that the user should refer to a corresponding topic in the manual (marked with the symbol) before using the relevant...
  • Page 7 ―――――――――――――――――――――――――――――――――――――― Measurement categories (Overvoltage categories) This device conforms to the safety requirements for CAT II (600V), CAT III (300V) measurement instruments. To ensure safe operation of measurement devices, IEC 61010 establishes safety standards for various electrical environments, categorized as CAT I to CAT IV, and called measurement categories.

  • Page 8: Notes On Use

    ―――――――――――――――――――――――――――――――――――――― Notes on Use Follow these precautions to ensure safe operation and to obtain the full benefits of the various functions. To avoid short circuits and potentially life-threatening DANGER hazards, follow these precautions. Never attach the clamp to a circuit that operates at more than the maximum rated voltage to earth.
  • Page 9 ―――――――――――――――――――――――――――――――――――――― If the waveform measuring instrument being DANGER connected to the output terminal (BNC) on this device is equipped with any other measurement terminals, take the following precautions to ensure that the other instrument does not form a bridge between the probe and any hazardous live of a part.
  • Page 10 ―――――――――――――――――――――――――――――――――――――― Be sure to observe all operating precautions for the DANGER waveform monitoring instrument (oscilloscope or recorder) and other measurement instruments to which this device is connected When using a measurement instrument that does not provide isolation between its input terminals and chassis or other input terminals, please pay attention to the following points.
  • Page 11 If you find any damage, contact your dealer or Hioki representative. This device is not designed to be entirely water- or dust- proof. To avoid damage, do not use it in a wet or dusty environment.
  • Page 12 When sending the device for repair, pack carefully to prevent damage in transit. Include cushioning material so the device cannot move within the package. Be sure to include details of the problem. Hioki cannot be responsible for damage that occurs during shipment. ――――――――――――――――――――――――――――――――――...

  • Page 13: Chapter 1 Overview

    Highly accurate current detection. Easy current measurement. Broadband frequency characteristics DC to 10 MHz. Large diameter allows high-current measurements. Easy protection function to avoid self-heating during excessive input. Unique HIOKI development of thin film Hall effect element ―――――――――――――――――――――――――――――――――― Chapter 1 Overview...

  • Page 14: Names Of Parts

    ―――――――――――――――――――――――――――――――――――――― 1.3 Names of Parts External view "LOCK" indication Current direction indication Terminator Sensor Power supply cable (inside) Sensor cable "UNLOCK" indication ―――――――――――――――――――――――――――――――――― Chapter 1 Overview...

  • Page 15: Parts Of The Sensor

    ―――――――――――――――――――――――――――――――――――――― 1.4 Parts of the Sensor 1. Clamp This clamps around the conductor to be measured. 2. Slider This slider opens the clamp. Always use it to open and close the clamp. 3. Lever This lock mechanism keeps the clamp closed. 4.
  • Page 16 ―――――――――――――――――――――――――――――――――――――― 8. Output connector The current waveform of the measured conductor is output at a constant rate (0.01 V/A). Connect to the BNC input connector of the waveform measuring instrument. The output of this device is terminated internally. Use a high- NOTE impedance input to the measuring instrument.

  • Page 17: Chapter 2 Specifications

    ―――――――――――――――――――――――――――――――――――――― Chapter 2 Specifications 2.1 Product Specifications Guaranteed at 23 (73 ±9 ) after the power has been ±5 on for 30 minutes. Bandwidth DC to 10 MHz (-3 dB) (Typical characteristics shown in Fig.1) Rise time 35 ns or less Maximum 150 A continuous input...

  • Page 18: Standards Applying

    ―――――――――――――――――――――――――――――――――――――― Operating 0 to 40 (32 to 104 ), 80 %RH or less (no temperature and condensation) humidity range Storage 10 to 50 (14 to 122 ), 80 %RH or less (no temperature and condensation) humidity range Location for use Indoor, altitude up to 2000 m (6562 feet) Period of 1 year (Opening/Closing up to 10,000 times)
  • Page 19 ―――――――――――――――――――――――――――――――――――――― Frequency [Hz] Fig.1 Frequency characteristics (Typical characteristics) Frequency [Hz] Fig.2 Derating according to frequency Frequency [Hz] Fig.3 Input impedance (Typical characteristics) ―――――――――――――――――――――――――――――――――― Chapter 2 Specifications...
  • Page 20 ―――――――――――――――――――――――――――――――――――――― ―――――――――――――――――――――――――――――――――― Chapter 2 Specifications...

  • Page 21: Chapter 3 Measurement Procedure

    ―――――――――――――――――――――――――――――――――――――― Chapter 3 Measurement Procedure 3.1 Notes on Use To avoid short circuits and potentially life-threatening DANGER hazards, follow these precautions. Never attach the clamp to a circuit that operates at more than the maximum rated voltage to earth. For safety's sake, avoid clamping around bare conductors, while clamping or measuring.
  • Page 22 ―――――――――――――――――――――――――――――――――――――― Make sure that the waveform measuring equipment DANGER connected to this device's output terminal (BNC) is equipped with a protective earthing with double- insulation construction. If the waveform measuring instrument being connected to the output terminal (BNC) on this device is equipped with any other measurement terminals, take the following precautions to ensure that the other instrument does not form a bridge...
  • Page 23 ―――――――――――――――――――――――――――――――――――――― Be sure to observe all operating precautions for the DANGER waveform monitoring instrument (oscilloscope or recorder) and other measurement instruments to which this device is connected When using a measurement instrument that does not provide isolation between its input terminals and chassis or other input terminals, please pay attention to the following points.

  • Page 24: Preparations For Measurement

    ON PROBE depends on the current value being measured. (2) Turn the power switch off and connect the power cord. (3) Connect the power plug of the 3274 to the power receptacle of the 3269 or 3272. (4) Turn the 3269 or 3272 power switch on, and check that the front panel power indicator lights.

  • Page 25: Demagnetizing And Zero Adjustment

    (2) Set the input coupling of the waveform measurement instrument to DC. (3) Connect the output connector of the 3274 to the input connector of the waveform measurement instrument. Turn the collar until it clicks, and check that it is locked securely.

  • Page 26: Measurement Procedure

    (5) It is now possible to monitor the current waveform. The output rate of the 3274 is 0.01 V/A. The current sensitivity can be derived from the voltage sensitivity of the waveform measurement instrument. For example, if the voltage sensitivity is 10 mV/division, the current sensitivity is 1 A/division.
  • Page 27 ―――――――――――――――――――――――――――――――――――――― ･ When using the 3274, note that two clamp-on probes may not be NOTE used simultaneously with the 3272 POWER SUPPLY, depending on the current to be measured. ･ The current consumption of clamp-on probes depends on the current to be measured. Confirm that the total current consumption of the clamp-on probes does not exceed the rated output current of the 3272.
  • Page 28 ―――――――――――――――――――――――――――――――――――――― Even if the input current does not exceed the rated CAUTION continuous maximum, continuous input for an extended period of time may result in activation of the safety circuit to prevent damage resulting from heating of the sensor. At high ambient temperatures, the built-in safety circuit may activate at current input levels below the rated continuous maximum.
  • Page 29 ―――――――――――――――――――――――――――――――――――――― The output of this device is terminated internally. Use a NOTE waveform measurement instrument with an input impedance of at least 1 MΩ. Immediately after powering on, this device may be subject to an appreciable offset drift due to the effect of self-heating. To counteract this, allow the device to warm up for about 30 minutes before carrying out measurement.
  • Page 30 ―――――――――――――――――――――――――――――――――――――― At high frequencies, common mode noise may affect measurements taken on the high voltage side of circuits. If this occurs, reduce the frequency range of the waveform measuring instrument, or clamp onto the low-voltage side of the circuit, as appropriate.
  • Page 35 HIOKI 3274 CLAMP ON PROBE Instruction Manual Publication date: September 2006 Revised edition 4 Edited and published by HIOKI E.E. CORPORATION Technical Support Section All inquiries to International Sales and Marketing Department 81 Koizumi, Ueda, Nagano, 386-1192, Japan TEL: +81-268-28-0562 / FAX: +81-268-28-0568 E-mail: os-com@hioki.co.jp...
  • Page 36 2003-01 改訂  枠消す HEAD OFFICE 81 Koizumi, Ueda, Nagano 386-1192, Japan TEL +81-268-28-0562 / FAX +81-268-28-0568 E-mail: os-com@hioki.co.jp / URL http://www.hioki.co.jp/ HIOKI USA CORPORATION 6 Corporate Drive, Cranbury, NJ 08512, USA TEL +1-609-409-9109 / FAX +1-609-409-9108 3274A981-04 06-09H Printed on recycled paper...

Table of Contents