KEW SNAP Series
Contents
1. Reference NOTE When the instrument is left powered on the auto power off function automatically shut the power off The display blanks even if the Range Selector Switch is set to a position other than INSTRUCTION MANUAL 1 SAFETY WARNINGS A WARNING Never attempt to make any measurement if any abnormal conditions are noted such as broken case cracked test leads 3 SPECIFICATIONS Measuring ranges and accuracy Sine wave This instrument has been designed and tested according to IEC Apparatus Ths instucton manual soiane warnnge an ete ebo noi irsta subse parts or mako any modieation 19 tho oan N Se a rage re Sed aaa ie ag Se Nila drat re ieee Ec to Kyoritsu or your distributor 40mA 0 01mA 0 40 00mA 1 0 rdg 5dgt 50 60Hz Replace the batteries H y l through these operating instructions before starting using the E ee ee the batteries if the surface of the 2 5 rdgt 10dgt 20Hz 1kHz B Checdna Swen Senin instrument Always switch off the instrument before opening the battery 400mA_ 0 1mA 0 400 0mA 100 300A isk sluts ihatihe Renge Saeco Svith iaeei heappopiaie a A KKYORITSU sasar compartment cover for battery replacement 1 0 rdg 5dgt 50 60Hz oe ange z ERE chiens 5 T a ares ree ia mT I betore Sarti auena e revert coated ATAATA 300 400A a ine crore and voltages are expressed in effective values made ma me eo at eee canal nonay as cretie quick reference Make sure that2. Multi Tran These models help Model 2433R to measure current greater than 3000A or to make measurement on a large bus bar or conductor 1 Set the Range Selector Switch to 400A 2 As shown open the jaws and close them over the pickup coil of Model 8004 or Model 8008 3 Clamp on a conductor with Model 8004 or Model 8008 4 Take the reading and multiply it by 10 S N Typical characteristic 50 60Hz N frequency response fc 160Hz 24dB cot Attenuation dB 3 abeluso184 Do not mix new and old batteries install batteries in the orientation as shown inside the battery compartment observing correct polarity iaa F Kyoritsu reserves the rights to change specifications or designs described in this manual without notice and without obligations KYORITSU ELECTRICAL INSTRUMENTS WORKS LTD No 5 20 Nakane 2 chome Meguro ku Tokyo 152 0031 Japan Phone 81 3 3723 0131 Fax 81 3 3723 0152 URL http www kew ltd co jp E mail info kew Itd co jp Factories Uwajima amp Ehime 03 02 92 1557 3 phase 3 wire system In 4 wire system with neutral in 3 wire system with neutral clamp onto all 4 wires Single phase 2 wire system clamp onto all 3 wires Fig 2 Measuring out of balance leakage current 6 2 How to Use Frequency Selector Button When high frequencies from such equipment as inverters are present in the circuit under test the instrument measures A
3. ee Note completely exhausted 10 Characteristic of 24dB octiave means that signal magnitude 7 1 Auto Power Off Function 1 Set the Range Selector Switch to OFF declines to about one sixteenth of that at the initial frequency when 2 Loosen the battery compartment cover fixing screw on the lower frequency doubles Model 2433R have the following two settings for This is a function to prevent the instrument from being left powered back of the instrument l l the Frequency Selector Button on and conserve battery power The instrument automatically turns 3 Replace the batteries with two new RO3 AAA 1 5V bo Pickup Coil 5 off about 10 minutes after the last switch or button operation To batteries 1 a D WIDE 20Hz approx 8 kHz Permits measurement of currents of return to the normal mode turn the Range Selector Switch to OFF 4 Put the battery compartment cover back in place and tighten F a fundamental frequencies as well as then to the desired position the screw Te M 2433R currents of high frequencies Disabling Auto Power Off Function Note For use for a long period of time use alkaline batteries 7 generated by such equipment as To disable the auto power off function power on the instrument LRO3 ae ange Ratio M 8004 60mm in diameter 0 1000A M 8008 100mm in diameter 0 3000A Note Model 8004 and Model 8008 cannot be used for leakage current measurement For detailed specifications refer to the instruction manual for Model 8004 o
4. the range selector switch is set to an appropriate ee ii di 2 0 rdg 50 60H2 which are also referred to as RMS Root Mean Square values The Ee E cal a Do nor A E one direct sun extreme 5 0 rdg Ones wag eee ee nee ue A A 6 OPERATING INSTRUCTIONS Be sure to use the instrument only in its intended applications and to follow measurement procedures described in the manual temperatures or dew fall gt CF Crest factor 3 45 65Hz less than 600A Peak Be sure to set the range selector switch to the OFF position 100 400A sine wave 2 rdg after use When the instrument will not be in use for a long Counts equal to or less than 3 counts are corrected to zero rectifying circuit have RMS scales for AC measurement The scales are however actually calibrated in terms of the effective value of a sine wave though the clamp meter is responding to the average value The calibration 6 1 Current Measurement Be sure to understand and follow all safety instructions lt i i l f eas oe in the manual 7 period of time place it in storage after removing the batteries mecdlacy nsUied Predgeney Tange Ot ae e0hs models SNOUB is done with a conversion factor of 1 111 for sine wave which is found by A DANGER Use a damp cloth and detergent for cleaning the instrument Do Conversion method Rms value detection dividing the effective value by the average value These instruments are in order to avoid possible shock hazard n
5. C current of not only 50Hz or 60Hz of fundamental frequency but also of these high frequencies and harmonics To eliminate the effect of such high frequency noise and measure AC current of 50Hz or 60Hz fundamental frequency a high cut filter circuit in incorporated into the instrument which works when 50 60Hz frequency response is selected with the Frequency Selector Button Cut off frequency of the high cut filter is about 160Hz with attenuation characteristic of approx 24dB octave When the Frequency Selector Button is pressed 50 60Hz mark is shown on the left side of the display When the Frequency Selector Button is pressed again fequency response is switched to WIDE with WIDE mark shown on the display inverters 50 60Hz 20 approx 160Hz Filters out high frequency currents and measures current of fundamental frequency only Recently there has been increased use of power through inverters switching regulators etc When the high frequency noise from such appliances leaks or flows into the ground through capacitors not filtering completely the earth leakage breaker may trip even though there is no actual leakage In such a case the instrument do not give leakage current reading if 50 60Hz frequency response is selected Take current readings with the 50 60Hz and WIDE frequency responses respectively to make effective use of the Frequency Selector Button 6 3 Peak Current Measurement 1 Set the Range Selector Sw
6. a 1 9 duty ratio CF 3 Digital clamp tester for AC leakage measurement Accuracy insured 23 C 5 relative humidity 85 or less insulation Accurate true RMS reading of AC current with distorted waveform Temperature and without condensation DANGER is reserved for conditions and actions that are likel Least affected by external magnetic field providing wide Pity Ranges An sih 7 4 INSTRUMENT LAYOUT CAUTION LEAKAGE CURRENT TESTER to cause serious or fatal injury J measuring range from very small to large currents eo ieee da acne Take sufficient care to not to apply shock vibration or A WARNING is reserved for conditions and actions that can Designed to safety standard IEC 61010 2 032 over voltage Storage renee ai 20 60 C relative humidity 85 or less Trigger excessive force to the jaw tips Otherwise precisely adjusted category CAT MI 300V and pollution degree 2 Tear drop shaped jaws for ease of use in crowded cable areas and other tight places Data hold function to allow for easy readings in dimly lit or hard to reach locations Provides filtering function to remove high frequency generated by such equipment as inverters C DANGER Peak hold function to allow for measurement of current variation cause serious or fatal Injury CAUTION is reserved for conditions and actions that can cause minor injury or Instrument damage Transformer Jaw tips will be damaged When a foreign substance is stuck in t
7. e measurement range Approx 40mm in diameter max interference of external magnetic field completely If there are something which generating large magnetic field at a nearby site current value can be displayed 0 cannot be displayed before clamping on the conductor For such a case please use the instrument at a location far from the thing which generating magnetic field 5 PREPARATIONS FOR MEASUREMENT 5 1 Checking Battery Voltage KYORITSU ELECTRICAL INSTRUMENTS WORKS LTD TOKYO JAPAN H Conductor Size F j Following are the typical things generating magnetic field Never open the battery compartment cover when making co Fe ae s Set the Range Selector Switch to any position other than the OFF Conductor fed large current measurement ate hae ee Tan ROS AAA Be ae position If the marks on the display is clearly visible without BATT Motor lt Equipment which has magnet lt Integrating wattmeter mark showing battery voltage is OK If the display blanks or BATT is indicated replace the batteries according to section 8 Battery Replacement Carrying case Model 9052 Instruction manual Optional Accessories Multi Tran Model 8004 and 8008 4 The display reads 1 2 of the peak current value Therefore an rms reading is shown when current of a sinusoidal waveform is Typical characteristic WIDE frequency response measured laa 2 5 After peak measurement press the Peak Ho
8. ever make measurement ni not use abrasives or solvents Operating System Sequential comparison therefore in error if the input voltage or current has some other shape than on circuits having a potential of 3B00VAC or greater a sane sis above aa pede cca injury instrument Display Lliquid crystal display with maximum reading sine wave The transformer jaws are made of metal and their tips are not amage ang ordamage 10 equPmEnUnQeEr tesi of 4200 completely insulated Be especially careful about the possible shorting where the equipment under test has exposed metal parts Never make measurement with the battery compartment cover removed Examples When measuring current is 300A or more 400Hz or more be sure to Sine wave CF 1 414 stop measurement within 5 minutes Otherwise transformer jaws may heat to cause a fire or deformation of molded parts which will degrade Low battery warning BATT mark appears on the display o CF Crest Factor is found by dividing the peak value by the effective Overrange Indication OL appears on the display when upper limit value of measuring range is exceeded Approx 2 seconds Approx 2 5 times per second The symbol indicated on the instrument means that the user must refer to related parts of the manual for safe operation of the instrument Be sure to carefully read the instructions following each symbol in this manual 2 FEATURES Response Time Sample Rate Square wave with
9. he jaw tips or they cannot properly engage the transformer jaws do not fully close In such a case do not release the jaw trigger abruptly or attempt to close the transformer jaws by applying external force Make sure that the jaws close by themselves after removing the foreign substance or making them free to move The maximum size of a conductor to be tested is 40mm in diameter Accurate measurement cannot be made ona and Humidity Ranges without condensation Operable altitude 2000m or less above sea level indoor use Power Source Two 1 5V RO3 AAA batteries Current Consumption Approx 21mA Measurement Time Approx 24 hours Auto power off Function Turns power off about 10 minutes after the last switch operation IEC 61010 2 032 Range Selector Switch Transform Jaws Hand Strap J af T cE Z KLRTSY A IKEW SNAP MODEL 2433R 40mA Bs 400A 3 f 2200 oof cot ts BS 27i 2 cox Dara m ind a i PC sb I Display i 9 KEW SNAP Series Frequency Selector Button Safety Standard Peak Hold Button Never make measurement on a circuit having potential of as short as 10msec over voltage CAT IE 300V pollution degree 2 Data Hold Button i 300VAC or greater Auto power off function prevents unnecessary power consumption EMC EN61326 j Ro l a i 1 sae ner ay ae Se RN tea eaten Sara reat eg ow tere Denes M O D L 2433 R Do not attempt to make measu rement in the presence of D
10. itch to the desired position Current to measure should not exceed the selected measuring range 2 Select WIDE or 50 60Hz with the Frequency Selector Button 3 With the transformer jaws clamped onto the conductor under test press the Peak Hold Button to set the interment to the peak measurement mode P is shown on the display with the Data Hold Button pressed About 3 seconds after powering on the instrument P OFF is shown on the display To enable the auto power off function turn on the instrument without pressing the Data Hold Button Note The auto power off function is disabled in the peak measurement mode 7 2 Date Hold Function This is a function to freeze the readings on the display When the Data Hold Button is pressed once the current reading is held even though current under test varies H mark is shown on the upper right corner of the display To exit the data hold mode press the Data Hold Button again Note When the auto power off function works while the instrument is in the data hold mode data hold is cancelled Battery Compartment aaa s Batteries 30 Transformer 3 F 10 20 50 100 200 500 1k 2k 5k 10k 20k 50k 100k Counts equal to or less than 5 counts are corrected to zero jaws if fj Frequency Hz P ae L Fig 3 Model 2433R Frequency Characteristic Mi ae E E aces oa ie Conductor ate Maor 7 OTHER FUNCTIONS display blanks and BATT mark is not shown if the batteries are LJ
11. ld Button to return to A WARNING the normal measurement mode In order to avoid possible shock hazard always set the Range Note When leakage current is measured in the peak measurement Selector Switch to the OFF position before trying to replace the mode the reading may change if the transformer jaws are batteries opened and closed Please read the display with the conductor under test clamped otherwise after fixing the display by using the data hold function please remove the instrument from the A CAUTION conductor to be measured and read the display To measure the peak current again please release the data hold and return the instrument to the normal measurement mode once with the Peak Hold Button then set it in the peak measurement mode 1 Set the Range Selector Switch to the desired position Current Output characteristic are shown in Fig 3 to measure should be within the selected measuring range 10 2 Normal measurement See Fig 1 Press the jaw trigger to open the transformer jaws and close them over one conductor only Measured current value is shown on the display Earth leakage current or small current that flows through a grounded wire can also be measured by this method 8 Measuring out of balance leakage current See Fig 2 Clamp onto all conductors except a grounded wire Measured current value is shown on the display Correct 20 8 BATTERY REPLACEMENT 9 OPTIONAL ACCESSORIES DISTRIBUTOR Model 8004 and 8008
12. r Model 8008
13. ynamic range of 4200 counts full scale EN55022 Low Battery Warning NE a Data Hold Indication When ee anne ange E I tie ianctemneriane may bax flammable gasses Otherwise the use of the instrument may Large easy to read LCD display with letter height of 13mm EN61000 4 2 perfomance criterion B Frequency Response Peak Hold Indication This has no effect on the instrument s performance or safety PAUSE Sparking Wien Eads ti an PAPIS Operation confirming beeps EN61000 4 3 perfomance criterion A Wide ham Sensitive transformer jaws are used for Leakage clamp meter The transformer jaws are made of metal and their tips are not Insulation barrier at the tip of transformer jaws for improved safety Overload Protection 480AAC max for 10 seconds Frequency Response TEA Mmt 1 antl s al 8 MAL Uni Because of the characteristics of transformer jaws which can completely insulated Be especially careful about the possible Withstand Voltage 3700VACrms 50 60Hz for 1 minute between 50 60Hz be opened and closed it is impossible to eliminate the shorting where the equipment under test has exposed metal metal part of transformer jaws and housing parts case except transformer jaw case Never attempt to use the instrument if its surface or your hand is Insulation Resistance 50MQ or greater at 1000V between metal wet part of transformer jaws and housing case Do not exceed the maximum allowable input of any except transformer jaw cas
Download Pdf Manuals
Related Search