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Summary of Contents for Iwatsu Rogowski Coil Current Probe
- Page 1 Instruction Manual Rogowski Coil Current Probe SS-683/684/685...
- Page 2 Ⓒ2018 IWATSU ELECTRIC CO., LTD．All rights reserved．...
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Page 3: Table Of Contents
Repair and sending instrument to be repaired ······················· 8 Cleaning of this instrument ··············································· 8 Chapter 1 Overview ······················································· 9 1.1 Rogowski Coil Current Probe ··························· 9 1.2 Features························································· 10 1.3 Usage Example ··············································· 11 Chapter 2 Names and Functions ······································ 12 2.1 Main Unit ························································... - Page 4 Memo...
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Page 5: Preface
◇ Reproduction or reprinting of the contents of this manual without prior permission from IWATSU is prohibited. ◇ If any question arises about this instrument, contact IWATSU or our sales distributors. Revision History ◇ November 2018: 1st edition ◇... -
Page 6: Warning
(remove the AC adaptor from the outlet when used). Continued use under these circumstances may result in an electric shock or fire. Contact Iwatsu office or our sales distributors for repair. Do not attempt to repair this instrument yourself. - Page 7 Do not modify or disassemble this instrument. Modification or disassembly of this instrument could result in an electric shock, fire, or failure. Repair of a modified instrument may be refused. Contact Iwatsu office or our sales distributors for repair.
- Page 8 Do not use this instrument when it has failed. Using a failed main unit or, cable or AC adaptor may be a cause of an electric shock or fire. In the event of a failure, contact Iwatsu office or our sales distributors for repair.
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Page 9: Caution
Read the following safety information. (continued) CAUTION Hold the plug when removing the AC adaptor from the outlet. Pulling on the AC adaptor cable will damage the cable. This may be a cause of an electric shock, fire, or failure. ... - Page 10 In addition, wipe off with a dry cloth when water droplets are attached. If not, an electric shock or failure may occur. We recommend that you contact Iwatsu office or our sales distributors for periodic inspection and calibration about once a year.
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Page 11: Verify Packed Items
Verify packed Items When receiving this instrument, verify the packed items while referring to the following “Components.” If there is a missing item or an item damaged during transportation, immediately contact IWATSU or our sales distributors. Components Rogowski Coil Current Probe ・・・1... -
Page 12: Management Of Instrument
Repair and sending instrument to be repaired If a failure occurs, send the instrument to IWATSU or our sales distributors. When sending an instrument to be repaired, clearly write the instrument name, serial number (in the label on the rear of this instrument), description of the failure, and the name, division, and telephone number of the responsible person. -
Page 13: Chapter 1 Overview
Chapter 1 Overview Chapter 1 Overview 1.1 Rogowski Coil Current Probe This instrument is a current probe that uses the Rogowski Coil as a sensor. It allows to measure the current of semiconductor device or electronic circuits. The coil of this instrument detects a change in magnetic flux caused by the current (target to be measured) flowing through the inside of the coil that forms a closed loop. -
Page 14: Features
Chapter 1 Overview 1.2 Features The following describes the features of this instrument. Target of measurement • Semiconductor Switching • Transient current or switching waveform of electronic equipment Easy measurement • Because of the small size of the current sensor, it is possible to measure the place where the electronic circuit is complicated. -
Page 15: Usage Example
Chapter 1 Overview 1.3 Usage Example To measure current using this current probe, place a conductor to be measured through the Sensor Through Hole, and detect a change in magnetic flux caused by the current flowing through the conductor with the Rogowski Coil as an electromotive force, as shown in the following usage example (conceptual illustration). -
Page 16: Chapter 2 Names And Functions
Chapter 2 Names and Functions of Parts Chapter 2 Names and Functions 2.1 Main Unit ⑤ ④ ⑧ ⑥ ① ③ ② ⑦... -
Page 17: Names And Functions Of Main Unit
Chapter 2 Names and Functions of Parts 2.2 Names and Functions of Main Unit Name Description Reference POWER switch ► Section 4.2 Turns this instrument on and off. This instrument is turned on when this slide switch is moved to the I side and is turned off when moved to the O side. -
Page 18: Rogowski Coil Sensor
Chapter 2 Names and Functions of Parts 2.3 Rogowski Coil Sensor Current direction mark Names and Functions of Rogowski Coil Sensor Name Description Rogowski Coil A rogowski coil is formed a closed loop so as to surround Sensor the Sensor Through Hole inside, and is connected to the sensor cable. -
Page 19: Chapter 3 Measurement Principle
Chapter 3 Measurement Principle Chapter 3 Measurement Principle This instrument is designed to measure the current (current waveform) in conductors to be measured. It consists of the Rogowski Coil Sensor part and the main unit (integrator). Sections 3.1 and 3.2 in this chapter describe measurement principles and functions of each part and are concluded with an explanation of a process of measuring the current (current waveform). -
Page 20: Rogowski Coil Sensor
Chapter 3 Measurement Principle 3.1 Rogowski Coil Sensor Figure 3.1 shows that the current I flows through the conductor to be measured. This section describes the principle of detecting this current by the Rogowski Coil step by step. Output voltage (V) Signal that is (Current waveform) differential of input... -
Page 21: Main Unit
Chapter 3 Measurement Principle 3.2 Main Unit As illustrated in Figure 3.2, the electromotive force e induced in Section 3.1 is brought in the input part of the main unit through the sensor cable. Main unit (in the dotted Observation with an oscilloscope (not included) area) and other monitoring... -
Page 22: Chapter 4 Measurement
Chapter 4 Measurement Chapter 4 Measurement 4.1 Preparation for Measurement (1) Have this instrument, a monitoring device, and a target to be measured ready. * A monitoring device means an oscilloscope, DVM, recorder, and other devices. (2) Place four AA dry batteries in the main unit, or connect the AC adaptor (option) to this instrument. -
Page 23: Measurement Procedure
Chapter 4 Measurement 4.2 Measurement Procedure (1) Make sure that all preparations described in the previous section are completed. (2) Pass a target to be measured through Sensor Through Hole. Do not apply the target to be measured even when it is ready to be used. - Page 24 Chapter 4 Measurement (4) Adjust the DC offset voltage (zero point) of the output observed by monitoring devices. a) Have the included accessory Adjustment Screwdriver ready. b) As shown in the figure below, there is a hole for zero point adjustment on the side of ZERO ADJ on the main unit panel.
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Page 25: Before Measurement
Chapter 4 Measurement 4.3 Before Measurement This section describes notes on accuracy and the handling of the Rogowski Coil Sensor part when measuring the current using this instrument. 4.3.1 To Minimize Influence of Fluctuations in Voltage If there is a part whose voltage fluctuates around the Rogowski Coil Sensor part, electrostatic coupling between the part and the Rogowski Coil will occur. - Page 26 The Rogowski Coil has a structural life. The duration of use of the coil depends on the use environment and use conditions. We recommend that you replace a deformed coil or a coil with its surface damaged, in order to maintain safety and accurate measurement. Contact Iwatsu office or our sales distributors for replacement.
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Page 27: Chapter 5 Specifications
Chapter 5 Specifications Chapter 5 Specifications 5.1 Specifications Basic specifications SS-683 SS-684 SS-685 Sensitivity [mV/A] Peak current [A] Peak di/dt [kA/μs] Absolute maximum di/dt Peak [kA/μs] RMS [kA/μs] to 100 MHz [−3 dB] Frequency bandwidth : Low frequency cutoff Low frequency cutoff [Hz] Noise [mV rms] Sensitivity accuracy ±2%... - Page 28 Chapter 5 Specifications Environmental characteristics Operating temperature and 0C to 40C, 80%RH or less humidity range Storage temperature and −10C to 60C, 80%RH or less humidity range ≤ 2,000 m at ≤ 25C Operating altitude Note 1) Equivalent nickel metal-hydride, nickel-cadmium battery, and other rechargeable batteries can also be used.
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Page 29: Appearance
Chapter 5 Specifications 5.2 Appearance (1) Main Unit Unit: mm... - Page 30 Chapter 5 Specifications (2) Rogowski Coil Sensor Unit: mm...
- Page 31 Contact Us Overseas Sales Sect. Sales Dept. No.2, Address : 7-41, Kugayama 1-Chome, Suginami-ku, Tokyo, 168-8501 Japan Phone : +81 3 5370 5483 Facsimile : +81 3 5370 5492 : http://www.iti.iwatsu.co.jp E-mail info-tme@iwatsu.co.jp...
- Page 32 SS-683/684/685...
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