KEW SNAP
Series
KEW SNAP 2413R
DIGITAL CLAMP METER
KYORITSU ELECTRICAL INSTRUMENTSWORKS，LTD.
INSTRUCTION MANUAL
Page 1: ...KEW SNAP Series KEW SNAP 2413R DIGITAL CLAMP METER KYORITSU ELECTRICAL INSTRUMENTS WORKS LTD INSTRUCTION MANUAL ...
Page 2: ... 11 ５ ２ AC Current Measurement 11 ５ ３ How to Use Peak Hold Function 14 ５ ４ How to Use The Frequency Selector Switch 16 ５ ５ How to Use Data Hold Function 17 ５ ６ How to use Back Light 17 ５ ７ Analogue Output How to Use Model 7073 Output Cord 18 ６ Battery Replacement 19 ７ Cleaning 20 ８ Before Sending For Repair 21 ...
Page 3: ...ruction following each symbol in this manual DANGER is reserved for conditions and actions that are likely to cause serious or fatal injury WARNING is reserved for conditions and actions that can cause serious or fatal injury CAUTION is reserved for conditions and actions that can cause bodily injury or instrument damage WARNING Read through and understand instructions contained in this manual bef...
Page 4: ...t under test If equipment under test has exposed conductive parts however extra precaution should be taken to minimize the possibility of shorting Never open the battery compartment cover when making measurement Never attempt to use the instrument if its surface or your hand is wet Do not exceed the maximum allowable input of any measurement range Never try to make measurement if any abnormal cond...
Page 5: ... of measuring instruments IEC61010 establishes safety standards for various electrical environments categorized as CAT Ⅰ to CAT Ⅳ and called measurement categories Higher numbered categories correspond to electrical environments with greater momentary energy so a measuring instrument designed for CAT Ⅲ environments can endure greater momentary energy than one designed for CAT Ⅱ CAT Ⅰ Secondary ele...
Page 6: ...orated low pass filter This permits current measurement in mains fundamental frequency only or a wide range of frequencies including those from such devices as inverters Peak hold facility with selectable response time of 10ms or 100 ms Two way analogue output terminal Provides AC voltage output proportional to the current under test for monitoring the waveform with an oscilloscope Also convent AC...
Page 7: ...libration is done with a conversion factor of 1 111 for sine wave which is found by dividing the effective value by the average value These instruments are therefore in error if the input voltage or current has some other shape than sine wave CF Crest Factor is found by dividing the peak value by the effective value Examples Sine wave CF 1 414 Square wave with a 1 9 duty ratio CF 3 Ranges 200mＡ 2Ａ...
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Page 9: ...setting of the frequency Selector or peak hold switch DC Output DC voltage is output in proportion to the display reading which reflects frequency selector or peak hold switch position 200mV DC for 2000 count reading 200mA 2A 20A 200A 1000A 0 200mA 0 2A 0 20A 0 200A 0 500A 501A 1000A Ranges AC Input Current DC Output Voltage Accuracy Frequency Range Freq Selector Switch at WIDE position Freq Selec...
Page 10: ... Light 8mA max Standard Safety IEC61010 1 IEC61010 2 032 CAT Ⅲ AC300V Pollution degree 2 EMC EN 61326 EN 55022 EN 61000 4 2 performance criterion B EN 61000 4 3 performance criterion B Overload Protection 1500A AC max for 1 minute Withstand Voltage 3700V AC for 1 minute between electrical circuit and housing cases Insulation Resistance 50MΩ or greater at 1000V between electrical circuits and housi...
Page 11: ...ffect liquid crystal display with maximum indication of 1999 Function symbol mA A and decimal point automatically appear as the function range switch is turned 9 ４ Instrument Layout over range indication LCD Fig 2 ...
Page 12: ... Hand Strap Prevents the instrument from slipping off the hand during use Power Function Range Switch Selection function and range It is also used to turn power on or off CAUTION Always set the Power Function Range Switch to the OFF position after use Jaw Trigger Operates transformer jaws Press to open the jaws Transformer Jaws Pick up the current flowing through the conductor Peak Hold Selector S...
Page 13: ...e data hold button is in the off position not pressed down If a measurement is made with the data hold button pressed in the display remains locked irrespective of input Symbol is displayed on the LCD ５ ２ AC current Measurement WARNING Do not make measurement on a circuit above 300V AC CAT Ⅲ Transformer jaw tips are designed not to short the circuit under test If equipment under test has exposed c...
Page 14: ...larger than this because the transformer jaws cannot be fully closed Frequency selector switch is designed to select the 50 60Hz and WIDE frequency ranges For further details refer to section 5 4 for operation of the frequency selector switch The transformer jaws may buzz when measuring large current This has no effect on the instrument s performance or safety 1 Set the function range switch to th...
Page 15: ...dicate exact zero but this is normal Even if current is being applied to the instrument till zero is indicated on the LCD it doesn t affect the readings Fig 3 Normal AC Current Measurements Fig 4 Earth Leakage Current Measurements Single Phase 2 wire system in 3 wire system with neutral clamp onto all 3 wire 3 phase 3 wire system in 4 wire system with neutral clamp onto all 4 wire Fig 5 Measuremen...
Page 16: ...ned when the current under test has a sinusoidal waveform I 3 Slide the peak hold switch back to the OFF position for a reset Note 1 KEW SNAP 2413R uses an analogue peak hold circuit to ensure a quick response to input current Because of the nature of this circuit the peak hold reading may gradually fall or in a rare case rise with time This is likely to be apparent when the instrument is used in ...
Page 17: ...t waveform The time for the voltage of the capacitor to reach its peak value varies according to its capacitance and the output impedance of the charging circuit KEW SNAP 2413R sets the time for the voltage of the capacitor to reach 90 of its peak value to 10ms or 100ms by switching between two output impedances Refer to Figure 7 for further details I For instance select the 10ms response time whe...
Page 18: ...h cut filter has a cut off frequency of approx 100Hz and an attenuation characteristics of approx 24 dB octave Note 24dB octave means that the magnitude of a signal declines by a factor of 16 when its initial frequency doubles The frequency selector switch has the following two positions WIDE 40Hz over 1kHz Covers a wide frequency band from mains supply to high frequencies generated by such equipm...
Page 19: ...ed on the LCD Push the button again to release the reading ５ ６ How to use Back Light When the Back Light Button is pressed the LCD back light will be on It will be automatically off after about 10 seconds Note Selection with the frequency selector switch dose not apply to AC output of the two way analogue output DC output of the two way analogue output reflects the frequency selector switch settin...
Page 20: ...red by connecting a digital multimeter to analogue output terminal or observed as a waveform by connecting an oscilloscope DC Output Can be monitored by connecting a digital multimeter or a recorder which enables many hours of monitoring See Figure 8 With the 2413R in the peak hold mode DC voltage corresponding to 1 2 of a peak current value can be held and output Refer to section 5 3 How to Use P...
Page 21: ...he OFF position 2 Unscrew and remove the battery compartment cover from the rear of the case 3 Install a new 9V battery of type 6F22 or equivalent observing correct polarity 4 Screw the battery compartment cover 19 ６ Battery Replacement WARNING Never replace the battery during measurement ...
Page 22: ...s containing solvent ７ Cleaning CAUTION Never use paint thinner benzene or other solutions containing solvent for cleaning the instrument Otherwise deforming or discoloring of the instrument body may result Handle the instrument with care and follow the instructions in order to maintain it in good condition for a long period of time ...
Page 23: ...tall the battery correctly Replace the battery Possible Cause Remedy Display reading remains frozen Data hold button is pressed in Peak hold switch is at ON position Release data hold button Set peak hold switch to OFF position The lowest digit of reading is unstable This is not a failure The instrument is highly accurate so it senses slight variations in the current under test Output cord Model 7...
Page 24: ...06 12 DISTRIBUTOR 92 1870A Kyoritsu reserves the rights to change specifications or designs described in this manual without notice and without obligations ...
