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Rogowski Coil Current Probe

SS-293S/293L/294S/294L

SS-295S/295L/296S/296L

Instruction Manual

Summary of Contents for SS-293L

Page 1: ...Rogowski Coil Current Probe SS 293S 293L 294S 294L SS 295S 295L 296S 296L Instruction Manual...

Page 3: ...w 9 1 2 Features 10 1 3 Usage Example 11 Chapter 2 Names and Functions of Parts 12 2 1 Main Unit 12 2 2 Names and Functions of Parts of Main Unit 13 2 3 Rogowski Coil Sensor Part 14 Chapter 3 Measurem...

Page 4: ...Memo...

Page 5: ...efinition of Warning and Caution as used in this manual Warning Incorrect operation or failure to observe a warning may result in death or serious injury Caution Incorrect operation or failure to obse...

Page 6: ...ble of this instrument s input part for the measurement where voltage exceeds the following value the voltage is described on the input part of this instrument An electric shock or failure may occur 1...

Page 7: ...ollowing when handling the coil sensor cable or BNC cable of this instrument If not an electric shock fire or failure may occur Do not use any of the cables if damaged Contact Iwatsu office or our sal...

Page 8: ...n off the power to this instrument After that contact Iwatsu office or our sales distributors for repair When thunder begins pull out the power plug of a device to which this instrument is connected f...

Page 9: ...orage temperature 10 to 60 C no dew condensation Storage humidity 80 RH or less Do not place this instrument in a location with excessive humidity or dust If not an electric shock fire or failure may...

Page 10: ...batteries in this instrument A reversely placed battery will result in battery explosion or leakage This may cause a fire injury failure or contamination of the surrounding environment Do not throw us...

Page 11: ...s If there is a missing item or an item damaged during transportation immediately contact Iwatsu office or our sales distributors Components Main unit 1 Accessories See the accessories table below Acc...

Page 12: ...tal hydride and nickel cadmium Request a recycling company in accordance with local laws or regulations Repair and sending instrument to be repaired If a failure occurs send the instrument to Iwatsu o...

Page 13: ...an electromotive force in the coil The electromotive force is proportional to a differential value of the current The output electromotive force of the Rogowski Coil is the differential waveform of t...

Page 14: ...oil is 8 5 mm designed to detect current has the following advantages Wide applications of measurement are possible in any place Superior heat resistance and insulation property around the coil This i...

Page 15: ...a sensitivity mV A set for each main unit The converted voltage is output from the output terminal of the main unit Inputting the output voltage to an oscilloscope and other monitoring devices allows...

Page 16: ...Chapter 2 Names and Functions of Parts 12 Chapter 2 Names and Functions of Parts 2 1 Main Unit...

Page 17: ...zero point adjustment on the side of ZERO ADJ Insert the accessory screw driver into the hole to perform zero point adjustment Section 4 2 Input part The sensor cable refer to Section 2 3 integral wit...

Page 18: ...closed loop There is a screw lock and joint hole to secure the other end of the coil Joint hole A part of the joint box and has a hole to insert the Rogowski Coil and a screw lock to lock and release...

Page 19: ...rent 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 fu...

Page 20: ...aw The magnetic field changes with time because alternating current flows in the conductor to be measured In the Rogowski Coil magnetic flux changes along the loop When it changes an electromotive for...

Page 21: ...he output voltage of the main unit current waveform is observed by an oscilloscope and other monitoring devices through the BNC cable As expressed by the following Equation 3 3 the voltage component V...

Page 22: ...ies in the battery case Note Do not place them in the wrong orientation c Close the lid of the battery case 3 Connect the accessory BNC cable to this instrument a Connect one end of the BNC cable to t...

Page 23: ...se the lock of the Rogowski Coil be sure to turn the screw lock in a direction opposite the direction indicated by LOCK until you feel a click After releasing the lock remove the one end of the Rogows...

Page 24: ...to the O side 5 Adjust the zero point of the output observed by monitoring devices a Have the accessory screw driver ready b As shown in the figure below there is a hole for zero point adjustment on t...

Page 25: ...t In addition the coil cannot sufficiently cancel a magnetic field produced by external current flowing through in the vicinity of this part This instrument is calibrated by current that flows through...

Page 26: ...section of the sensor cable where the resisting voltage is not guaranteed away from high voltage parts 4 3 3 To Minimize Influence of Fluctuations in Voltage If there is a part whose voltage fluctuat...

Page 27: ...OCK until you feel a click Warning Avoid the generation of corona discharge in an environment where high voltage is applied to the sensor part for a long time Depending on the frequency of the applied...

Page 28: ...error of 250 ppm C when the temperature is 10 C or less or 70 C or more Output Maximum voltage range 6 V load 100 k Connector BNC Linearity 0 05 of full scale Zero point adjustment range 300 mV or mor...

Page 29: ...2 Operation time of this instrument during the use of batteries The continuous operation time of this instrument is about 30 hours when alkaline batteries are used The LOW BATTERY LED lamp lights up w...

Page 30: ...Chapter 5 Specifications 26 5 2 Appearance 1 Main Unit Unit mm...

Page 31: ...Chapter 5 Specifications 27 2 Rogowski Coil Sensor Part Unit mm...

Page 32: ...Chapter 5 Specifications 28 Memo...

Page 33: ...Address 7 41 Kugayama 1 Chome Suginami ku Tokyo 168 8511 Japan Phone 81 3 5370 5483 Facsimile 81 3 5370 5492 URL http www iti iwatsu co jp E mail info iti iwatsu co jp...

Page 34: ...SS 293S 293L 294S 294L 295S 295L 296S 296L...

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