User`s Manual - Test Equipment Depot
Contents
1. cut filter circuit in incorporated into the instrument which works when 50 60Hz frequency response is selected with the Frequency Selec tor button Cut off frequency of high cut filter is about 160Hz with attenuation characteristic of approx 24dB octave NOTE Characteristic of 24dB octiave means that signal magnitude declines to about one sixteenth of that at the initial frequency when frequency doubles The Frequency Selector button has the following two positions e WIDE 20Hz or more Permits measurement of currents of fundamental frequencies as well as currents of high frequencies generated by such equipment as inverters e 50 60HZz 20 to approx 160HZ Filters out high frequency currents and measures current of fun damental frequency only When the button is pressed WA mark is shown on the left side of the display When the button is pressed again fre quency response is switched to WIDE with NMA mark shown on the display 10 Typical characteristic Typical characteristic 4 40 400mA WIDE frequency response i c l i i G Oy las E ER La t onat 100 dl a i a g l I g i Typical characteristic U Cc Typical characteristic 50 60Hz frequency response 50 92 oO l 100 400A high cut filter 24dB oct Q 0 i Bie ween paren D lt j j 53 o dB 20 B 4 20 10 TEE 5 A i i i 30 o 109 20 50 100 200 500 tk 2 5k Frequency Hz Frequency Charac2. only Clamp Adapter Model 99025 is designed to increase the measuring capability of a clamp meter With the use of the Clamp Adapter you can not only extend current range over 3000A but also clamp on a large bus bar or conductor 1 Set the Range switch to the 400A position 2 As shown in the figure right clamp Model CL340 onto the pickup coil of Model 99025 3 Clamp Model 99025 onto the bus bar or con ductor under test 4 Take the reading on Model CL340 and multiply it by 10 NOTE The clamp adapter is not applicable to leakage current measurement For detailed specification refer to the Clamp Adapter User s Manual 4 Battery Replacement WARNING To avoid electric shock hazard never try to replace batteries during measurement A CAUTION e Do not mix new and old batteries e Make sure to install battery in correct polarity as indicated in bat tery compartment If the battery voltage becomes too low for the instrument to operate normally Zig is shown on the display Then replace the battery Note that when the battery is completely exhausted the display blanks without ii shown 1 Set the Range switch to the OFF position 2 Press in the hole on the battery compartment cover with the tip of a pointed object then slide open the cover 3 Replace the battery observing correct polarity Use two new R03 UM 4 1 5V batteries 4 Slide the battery compartment cover back in
3. 400 Arange 0 to 250 A Within 0 5 rdg 5 dgt at every part in side the jaw section e Effect of external magnetic field 10 mA or less in proximity to a 15 mm dia conductor carrying 100 A e Effect of residual current 12 mA or less when clamping on two 10 mm dia conductors each carrying supply or return 100 AAC current Power Source Two R03 UM 4 1 5V batteries Battery Life Approx 40 hours continuous Current Consumption Approx 13mA Auto power off function Turns power off approx 10 minutes after the last switch operation e Withstanding Voltage 3700V AC 50 60Hz for 1 minute between electrical circuit and housing case or metal part of the jaws e Insulation Resistance 10MQ or greater at 1000V between elec trical circuit and housing case or metal part of the jaws Conductor Size Approx 40mm diameter max Dimensions Approx 81 W x 185 H x 40 D mm Weight Approx 270g Safety Standard EN 61010 1 EN 61010 2 032 300V AC CAT Ill Pollution degree2 indoor use e EMC Standard EN 61326 EN 55022 Accessories RO3 batteries SS ee eee ee ee ae 2 Carrying case Model 93030 1 User s Manual ay a eileen alle alana ein yee e elejeuesa se eVeie 1 Optional Accessories Clamp adapter Model 99025 6 Calibration and After sales Service Should any failure occur while you are using the tester follow the instructions given below If the tester still fails to operate correctly and needs repair contact the vendor from
4. User s CL340 Manual Leakage Clamp on Tester IM CL340 E Contents E Precautions for Safety Use of the Instrument 1 Instrument Layout 2 Measurement 2 1 Preparation for Measurement 2 2 AC Current Measurement 2 3 How to Use Frequency Selector Button 2 4 Peak Current Measurement 3 Other Functions 3 1 Auto Power Off Function 3 2 Data Hold Function 3 3 Optional Accessories 4 Battery Replacement 5 Specifications 6 Calibration and After sales Service Test Equipment 1 800 517 8431 YOKOGAWA Yokogawa M amp C Corporation 99 Washington Street Melrose MA 02176 Fax 781 665 0780 IM CL340 2nd Edition June 2003 MC E Precautions for Safe Use of the Instrument When handling the instrument ALWAYS observe all of the cautionary notes on safety given below Yokogawa M amp C Corporation is not at all liable for damage resulting from misuse of this product by the user that is contrary to these cautionary notes Various symbols are used on the instrument and in this manual to ensure the product is used safety and to protect operators and prop erty from possible hazards or damage The following safety symbols are used where appropriate Read the explanations carefully and familiarize yourself with the symbols before reading the text The instrument and this manual use the following safety symbols Danger Handle with Care A This symbol indicates that the operator must refer to an ex planation in the User s Manu
5. al in order to avoid the risk of personal injury or death and or damage to the instrument E Double Insulation This symbol indicates double insulation AC Voltage Current Boa This uae indicates AC voltage or current Groun This symbol indicates ground earth Ad WARNING Indicates that there is a possibility of serious personal injury or loss of life if the operating procedure is not followed correctly and describes the precautions for avoiding such injury or loss of life A CAUTION Indicates that there is a possibility of serious personal injury of dam age to the instrument if the operating procedure is not followed cor rectly and describes the precautions for avoiding such injury or dam age NOTE Draws attention to information essential for understanding the operation and features A WARNING e Never make measurement on a circuit above 300V AC e Do not use the instrument in an atmosphere where any flammable or explosive gas is present e Do not attempt to make measurement in the presence of flamma ble gasses fumes vapor or dust Otherwise the use of the instru ment may cause sparking which can lead to an explosion e Avoid using the instrument if it has been exposed to rain or mois ture or if your hands are wet e Do not exceed the maximum allowable input of any measurement range TestEquipmentDepot com e Never open the battery compartment cover when making meas urement e Do not use the instr
6. damp cloth and detergent for cleaning the instrument Do not use abrasives or solvents NOTE e Radiation immunity affects the accuracy of CL340 testers under the conditions specified in EN 61000 4 3 1997 e f equipment generating strong electromagnetic interference is located nearly the testers may malfunction 1 Instrument Layout Open Close Lever Range Selector Switch Transformer Jaws Hand Strap Frequency Selector Button Display Peak Hold Button Data Hold Button LCD Low Battery Warning Frequency Data Hold Indication Response D D D D Peak Hold Indication WIDE xX Y rm iy Seen 2 ana Unit of measured 50 60Hz quantity 2 Measurement 2 1 Preparation for Measurement A WARNING e Do not make measurement on a circuit above 300V AC This may cause shock hazard or damage to the instrument or equipment under test e When measuring current is 300A or more 400Hz or more be sure to stop measurement within 5 minutes Otherwise transformer jaws may heat to cause a fire or deformation of molded parts which will degrade insulation JN CAUTION e The jaw section is a delicate precision sensor Do not subject the jaw to unreasonably strong shock vibration or force when using it e f dust gets into the tops of the jaws remove it immediately Do not close the jaws when dust is trapped in its joints as the sensor may break e Please check that the Range switch is set to the desired po
7. place Battery Screw Compartment Cover os ESS For use for a log period of time use alkaline batteries D 5 Specifications E Instrument Specifications Measuring Ranges and Accuracy at 23 5 C relative humidity up to 85 AC Current 0 to 39 99mA 1 0 rdg 5dgt 50 60Hz 400mA 0 to 399 9mA 2 5 rdg 10dgt 20 to 1kHz 0 to 350 0A 1 0 rdg 5dgt 50 60Hz 2 5 rdg 10dgt 40 to 1kHz 400A t 9A ee evo 399 9A or less 2 0 rdg 50 60Hz 5 0 rdg 40 to 1kHz 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 as a right value m General Specifications Operating System Sequential comparison Measurement Function AC current Display Liquid crystal display with maximum counts of 3999 Overrange Indication OL is shown on the display Response Time Approx 2 seconds Sample Rate Approx 2 5 times per seconds Temperature and Humidity for Guaranteed Accuracy 23 C 5 C relative humidity 85 without condensation e Operating Temperature and Humidity 0 to 40 C relative humidity up to 85 without condensation e Storage Temperature and Humidity 20 to 60 C relative humidity up to 85 without condensation e Effect of conductor position 40 400 mA range Within 5 dgt at every part inside the jaws
8. sition before measurement NOTE e During current measurement keep the transformer jaws fully closed Otherwise accurate measurement cannot be made The maximum measurable conductor size is approx 40mm in diameter e When measuring large current the transformer jaws may buzz This has no effect on the instrument s performance or safety 2 2 AC Current Measurement 1 Set the Range switch to the desired position Current to measure should be within the selected measuring range 2 Normal measurement See figure below Press the open close lever 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 Wi See figure below Clamp onto all conductors except a grounded wire Measured current value is shown on the display A Note In case of 3 phase 3 wire clamp four wires for measurement Note In case of 1 phase 3 wire clamp three wires for measurement 2 3 How to Use Frequency Selector Button When high frequencies from such equipment as inverters are present in the circuit under 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
9. teristic 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 se lected Take care readings with the 50 60Hz and WIDE frequency responses respectively to make effective use of the Frequency Selector button 2 4 Peak Current Measurement 1 Set the Range switch to the desired position Current to measure should not exceed the selected measuring range 2 Select MMA or RA within the button 3 With the transformer jaws clamped onto the conductor under test press the button to set the interment to the peak meas urement mode gJ is shown on the display 4 The display read 1 V2 of the peak current value Therefore an rms reading is shown when current of a sinusoidal waveform is measured 5 After peak measurement press the button to return to the normal measurement mode NOTE When leakage current is measured in the peak measurement mode the reading may change if the transformer jaws are 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 cond
10. uctor 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 meas urement mode once with the button then set it in the peak measurement mode 3 Other Functions 3 1 Auto Power Off Function This is a function to prevent the instrument from being left powered on and conserve battery power The instrument automatically turns off about 10 minutes after the last switch or button operation To return to the normal mode turn the Range switch to OFF then to the desired position Disabling Auto Power Off Function To disable the auto power off function power on the instrument 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 3 2 Data Hold Function This is a function to freeze the reading on the display When the button is pressed once the current reading is held even though current under test varies E mark is shown on the upper right corner of the display To exit the data hold mode press the button again NOTE When the auto power off function works while the instrument is in the data hold mode data hold is cancelled 3 3 Optional Accessories Clamp Adapter Model 99025 For AC current measurement
11. ument if there is any damage to the casing or when the casing is removed e Do not install substitute parts or make any modification to the in strument Return the instrument to Yokogawa M amp C or your dis tributor for repair or re calibration e Always switch off the instrument before opening the battery com partment cover for battery replacement A WARNING To avoid damage to the instrument or electric shock The restrictions on the maximum voltage level for which the CL340 testers can be used depend on the over voltage categories specified by the safety standards These category specifications are formulated to protect operators against transient impulse voltage in power lines Maximum Allowable Input Function OVERVOLTAGE CATEGORY III awh 400Arms AC Measuring circuit voltage 300Vrms AC Over voltage category CAT I Signal level special equipment or parts of equipment telecommunication electronic etc with smaller transient over voltages than CAT II Over voltage category II CAT II Local level appliance portable equipment etc with smaller transient over voltages than CAT III Over voltage category III CAT III Distribution level fixed installation with smaller transient over voltages than CAT IV A CAUTION e Be sure to set the Range switch to the OFF position after use When the instrument will not be in use for a long period of time Place it in storage after removing the battery e Use a
12. whom you purchased the in strument or the nearest Yokogawa M amp C sales office e Turn off the POWER switch once then turn it back on again e Ifthe tester does not turn on replace the battery with a new one Calibration It is recommended that the instrument be calibrated once every year YOKOGAWA Yokogawa M amp C Corporation YOKOGAWA M amp C CORPORATION International Sales Dept 2 9 32 Nakacho Musashino shi Tokyo 180 8750 Japan Phone 81 422 52 5716 Facsimile 81 422 55 8654 YOKOGAWA CORPORATION OF AMERICA U S A Phone 1 770 253 7000 Facsimile 1 770 251 2088 YOKOGAWA EUROPE B V THE NETHERLANDS Phone 31 334 64 1611 Facsimile 31 334 64 1610 YOKOGAWA AMERICA DO SUL S A BRAZIL Phone 55 11 5681 2400 Facsimile 55 11 5681 1274 YOKOGAWA ENGINEERING INSTRUMENTS KOREA CORPORATION KO REA Phone 82 2 551 0660 to 0664 Facsimile 82 2 551 0665 YOKOGAWA AUSTRALIA PTY LTD AUSTRALIA Phone 61 2 9805 0699 Facsimile 61 2 9888 1844 YOKOGAWA BLUE STAR LTD INDIA Phone 91 80 227 1513 Facsimile 91 80 227 4270 LTD YOKOGAWA ELECTRIC RUSSIAN FEDERATION Phone 7 095 737 7868 Facsimile 7 095 737 7869 KIM3E 2003 2
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