Instruction Manual
Contents
1. Hold or Frequency Selector Button or turn the Range Selector Switch to OFF then to any other position How to Exit the Sleep Mode Turn the Range Selector Switch from OFF to another position with the Data Hold Button pressed Then P OFF is shown on the display This disables the Sleep function and enables continuous use of the instrument To enable the Sleep function turn the Range Selector Switch back to OFF then to any other position Note The instrument consumes small amount of current in the Sleep Mode When the instrument is not in use make sure to set the Range Selector Switch to OFF 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 Sleep function works while the instrument is in the data hold mode data hold is cancelled 8 BATTERY REPLACEMENT A CAUTION Q Do not mix new and old batteries Install batteries in the orientation as shown inside the battery compartment observing correct polarity Qn order to avoid possible shock hazard always set the Range Selector Switch to the OFF position before trying to replace the batteries When the battery voltage warning mark BATT is shown on the top left corner of the LC2. 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 28mm in diameter Accurate measurement cannot be made on a conductor larger than this because the transformer jaws cannot fully close Q When measuring large current the transformer jaws may buzz This has no effect on the instrument s performance or safety 6 1 Leakage Current Measurement 1 Set the Range Selector Switch to the desired position Current to measure should be within the selected measuring range 2 Measuring out of balance leakage current See Fig 1 Clamp onto all conductors except a grounded wire Measured current value is shown on the display 3 Measuring earth leakage current See Fig 2 Clamp onto a grounded wire Measured current value is shown on the display Z Z 3 phase 3 wire system Single phase 2 wire system In 4 wire system with neutral in 3 wire system with neutral clamp onto all 4 wires clamp onto all 3 wires Fig 1 Measuring out of balance leakage current Grounded wire Fig 2 Measuring earth leakage current 6 2 How to Use Frequency Selector Button When high frequencies from such equipment as inverters are present in the circuit unde
3. use for a long period of time place it in storage after removing the batteries Use a damp cloth and detergent for cleaning the instrument Do not use abrasives or solvents G Always switch off the instrument before opening the battery compartment cover for battery replacement 2 FEATURES Digital clamp tester for AC leakage current measurement GL east affected by external magnetic field providing wide measuring range from very small to large currents Designed to safety standard IEC 61010 2 032 over voltage CAT I 300V and pollution degree 2 Data hold function to allow for easy readings in dimly lit or hard to reach locations Q Provides filtering function to remove high frequency generated by such equipment as inverters Q Sleep function prevents unnecessary power consumption G Dynamic range of 4000 counts full scale QG Large easy to read LCD display with letter height of 13mm QG Transformer jaws fitted with guard to further improve safety 3 SPECIFICATIONS Measuring ranges and accuracy Range Measuring Range Accuracy Frequency range 400mA 0 399 9mA 2 0 rdg 4dgt 50 60Hz 4A 0 3 999A 3 0 rdg 5dgt 40 400Hz 100A 0 100 0A When measuring current which pulse element is superposed differences of the indicated value may be caused between ranges if the peak value exceeds the measurement range to a large extent In this case the reading at the bigger range should be taken
4. D replace the batteries Note that the display blanks and BATT mark is not shown if the batteries are completely exhausted 1 Set the Range Selector Switch to OFF 2 Loosen the battery compartment cover fixing screw on the lower back of the instrument 3 Replace the batteries with two new RO3 UM 4 1 5V batteries 4 Put the battery compartment cover back in place and tighten the screw Note Use alkaline batteries to perform measuring for long hours Battery Compartment Batteries 9 OPTIONAL ACCESSORIES Model 8004 and 8008 Multi Tran These models help Model 2434 to measure current greater than 1000A or to make measurement on a large bus bar or conductor 1 Set the Range Selector Switch to 100A 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 Transformer jw _ Conductor 10 Note Model 8004 and Model 8008 cannot be used for leakage current measurement For detailed specifications refer to the instruction manual for Model 8004 or Model 8008 Measuring Current Transformation Max ERR ax Conductor Size Range Ratio M 8004 60mm in diameter M 8008 100mm in diameter 0 1000A 10 1
5. INSTRUCTION MANUAL LEAKAGE CURRENT TESTER KEW SNAP Series MODEL 2434 KYORITSU ELECTRICAL INSTRUMENTS WORKS LTD S TOKYO JAPAN 1 SAFETY WARNINGS This instrument has been designed and tested according to IEC Publication 61010 Safety Requirements for Electronic Measuring Apparatus This instruction manual contains warnings and safety rules which must be observed by the user to ensure safe operation of the instrument and to retain it in safe condition Therefore read through these operating instructions before starting using the instrument N WARNING Read through and understand instructions contained in this manual before starting using the instrument Q Save and keep the manual at hand to enable quick reference whenever necessary Q Be sure to use the instrument only in its intended applications and to follow measurement procedures described in the manual Be sure to understand and follow all safety instructions contained in the manual Not following the above instructions may cause injury instrument damage and or damage to equipment under test The symbol Aindicated 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 Asymbol in this manual NDANGER is reserved for conditions and actions that are likely to cause serious or fatal injury A WARNING is reserved for co
6. as a right value Sensitive transformer jaws are used for Leakage clamp meter Because of the characteristics of transformer jaws which can be opened and closed it is impossible to eliminate the interference of external magnetic field completely If there are d which generating large magnetic field at a nearby site current value can be displayed O 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 Following are the typical things generating magnetic field Conductor fed large current Motor Equipment which has magnet Integrating wattmet r Measuring method Display Low battery warning Overrange Indication Response Time Sample Rate Accuracy insured Temperature and Humidity Ranges Operating Temperature and Humidity Ranges Storage Temperature and Humidity Ranges Power Source Current Consumption Measurement Time Sleep Function Safety Standard Overload Protection Withstand Voltage Insulation Resistance Conductor Size Dimensions Weight Accessories Optional Accessories Dual Integration Liquid crystal display with maximum reading of 3999 BATT mark appears on the display OL appears on the display when upper limit of measuring range is exceeded Approx 2 seconds Approx 2 5 times per second 23 C 5C relative humidity 85 or less without cond
7. ensation 0 40 C relative humidity 85 or less without condensation 20 60 C relative humidity 85 or less without condensation Two 1 5V RO3 UM 4 batteries Approx 4mA Approx 150 hours Automatically powered down in about 10 minutes after the last switch operation IEC 61010 1 IEC 61010 2 032 over voltage CAT II 300V pollution degree 2 IEC 61326 EMC 120Arms max for 10 seconds 3700Vrms 50 60Hz for 1 minute between metal part of transformer jaws and housing case except transformer jaw case 10M OQ or greater at 1000V between metal part of transformer jaws and housing case except transformer jaw case Approx 28mm in diameter max 169 L X75 W X40 D mm Approx 220g including batteries Two RO3 UM 4 batteries Carrying case Model 9052 Instruction manual Multi Tran Model 8004 and 8008 4 INSTRUMENT LAYOUT Trigger N 0A CATH Transform Jaws Data Hold Button Range Selector Switch KY Hand Strap LN Kew SAP MODEL 2434 K mA mm nad V af aay LCcCD Frequency Selector Button Low Battery Warning an am _ AC lt mh malu Data Hold Indication Frequency Response BATT D D D P DP DPD lt Wide Y N Frequency Response w Im 50 60Hz E m EAV en e Unit 5 PREPARATIONS FOR MEASUREMENT 5 1 Checking Battery Voltage Set the Range Selector Switch to any position other than the OFF position If the marks on the dis
8. ment of currents of fundamental frequencies as well as currents of high frequencies generated by such equipment as inverters 50 60Hz 40 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 Load Current Measurement 1 Set the Range Selector Switch to the desired position Current to measure should be within the selected measuring range 2 Measuring load current See Fig 4 Press the jaw trigger to open the transformer jaws and close them over one conductor only Measured current value is shown on the display Z Fig 4 Measuring load current 7 OTHER FUNCTIONS 7 1 Sleep Function This is a function to prevent the instrument from being left powered on in order to conserve battery life The instrument automatically enters the Sleep powered down Mode about 10 minutes after the last switch operation To exit the Sleep Mode press the Data
9. nditions and actions that can cause serious or fatal Injury NCAUTION is reserved for conditions and actions that can cause minor injury or Instrument damage A DANGER QG Never make measurement on a circuit having potential of 300VAC or greater Do not attempt to make measurement in the presence of flammable gasses Otherwise the use of the instrument may cause sparking which leads to an explosion The transformer jaws are made of metal and their tips are not completely insulated Be especially careful about the possible shorting where the equipment under test has exposed metal parts 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 open the battery compartment cover when making measurement WARNING Never attempt to make any measurement if any abnormal conditions are noted such as broken case cracked test leads and exposed metal parts Do not install substitute parts or make any modification to the instrument Return the instrument to Kyoritsu or your distributor for repair or re calibration CAUTION Make sure that the range selector switch is set to an appropriate position before making measurement Do not expose the instrument to the direct sun extreme temperatures or dew fall Be sure to set the range selector switch to the OFF position after use When the instrument will not be in
10. play is clearly visible without BATT mark showing battery voltage is OK If the display blanks or BATT is indicated replace the batteries according to section 8 Battery Replacement NOTE When the instrument is left powered on the Sleep function automatically shut the power off The display blanks even if the Range Selector Switch is set to a position other than the OFF position in this state To power on the instrument turn the Range Selector Switch or press any button If the display still blanks the batteries are completely exhausted Replace the batteries 5 2 Checking Switch Setting Make sure that the Range Selector Switch is set to the appropriate range Also make sure that data hold function is not enabled f inappropriate range is selected desired measurement cannot be made 6 OPERATING INSTRUCTIONS A DANGER Qn order to avoid possible shock hazard never make measurement on circuits having a potential of 300VAC or greater Q The transformer jaws are made of metal and their tips are not completely insulated Be especially careful about the possible shorting where the equipment under test has exposed metal parts QG Never make measurement with the battery compartment cover removed NCAUTION Q Take sufficient care to not to apply shock vibration or excessive force to the jaw tips Otherwise precisely adjusted Transformer Jaw tips will be damaged Q When a foreign substance is stuck in the jaw tips or
11. r test the instrument measures AC 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 frequency response is switched to WIDE with WIDE mark shown on the display Output characteristic are shown in Fig 3 10 Typical characteristic Typical characteristic T 400mA 4 A Range WIDE frequency response 9 0 meee 100 5 X Typical characteristic 50 5 Typical characteristic 50 60Hz frequency response T g 20 8 a 20 10 8 oO 5 30 10 20 50 100 200 500 1k 2k 5k Frequency Hz Fig 3 Model 2434 Frequency Characteristic Note Characteristic of 24dB octiave means that signal magnitude declines to about one sixteenth of that at the initial frequency when frequency doubles Model 2434 have the following two settings for the Frequency Selector Button WIDE 40Hz Permits measure
Download Pdf Manuals
Related Search