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iv

___________________________________________________

Safety Information

___________________________________________________

The

symbol printed on the instrument

indicates that the user should refer to a
corresponding topic in the manual (marked with
the

symbol) before using the relevant

function.
In the manual, the

symbol indicates

particularly important information that the user
should read before using the instrument.

Indicates both DC (Direct Current) and AC
(Alternating Current).

Indicates DC (Direct Current).

Indicates that dangerous voltage may be
present at this terminal

Indicates a double-insulated device.

Indicates a grounding terminal.

Indicates that the instrument may be connected
to or disconnected from a live circuit.

Safety Symbols

Содержание 3285-20

Страница 1: ...3285 20 CLAMP ON AC DC HiTESTER Instruction Manual December 2014 Revised edition 10 3285B981 10 14 12H...

Страница 2: ...f button Operations 10 1 4 1 Current Measurements Mode 10 1 4 2 Voltage Measurements Mode 11 1 4 3 Frequency Measurements Mode 12 1 4 4 Resistance Measurements Mode 12 1 5 Modes 13 Chapter 2 Measureme...

Страница 3: ...1 Frequency Measurement in Current Mode 31 2 4 2 Frequency Measurement in Voltage Mode 32 2 5 Resistance Measurement 34 2 6 Continuity Check 36 Chapter 3 Useful Functions 39 3 1 Adjusting and Correct...

Страница 4: ...nt Specifications 49 4 1 2 Voltage Measurement Specifications 52 4 1 3 Resistance Measurement Specifications 54 4 1 4 Continuity Check 54 4 2 General Specifications 55 Chapter 5 Maintenanceand Service...

Страница 5: ......

Страница 6: ...DC HiTester To obtain maximum performance from the instrument please read this manual first and keep it handy for future reference Request We have tried to bring this manual as close to perfection as...

Страница 7: ...to ensure that no damage occurred during shipping In particular check the accessories panel switches and connectors If damage is evident or if it fails to operate according to the specifications cont...

Страница 8: ...uld result in injury or death as well as damage to the instrument Be certain that you understand the instructions and precautions in the manual before use We disclaim any responsibility for accidents...

Страница 9: ...ing the relevant function In the manual the symbol indicates particularly important information that the user should read before using the instrument Indicates both DC Direct Current and AC Alternatin...

Страница 10: ...ms related to performance or correct operation of the instrument The following symbols in this manual indicate the relative importance of cautions and warnings Accuracy We define measurement tolerance...

Страница 11: ...ntrance and to the power meter and primary overcurrent protection device distribution panel Measurement categories This instrument complies with CAT III safety requirements To ensure safe operation of...

Страница 12: ...vii ___________________________________________________ Safety Information ___________________________________________________...

Страница 13: ...secondary side of a breaker so the breaker can prevent an accident if a short circuit occurs Connections should never be made to the primary side of a breaker because unrestricted current flow could c...

Страница 14: ...connect the test leads or temperature probe to the instrument Input voltage exceeding 600 Vrms 1000 V max with respect to ground could damage the instrument and result in personal injury Be sure to in...

Страница 15: ...eria Conforms to safety standards IEC61010 or EN61010 Of measurement category III or IV Its rated voltage is higher than the voltage to be measured The test leads provided with this instrument conform...

Страница 16: ...with clamping action For safety reasons when taking measurements only use the Model L9207 10 Test Lead provided with the instrument To avoid damage to the instrument do not exceed the maximum input cu...

Страница 17: ...o a tight spot for measurement The protection rating for the enclosure of this device based on EN60529 is IP40 IP40 This indicates the degree of protection provided by the enclosure of the device agai...

Страница 18: ...he test leads do not reach the measurement object remove the rigid insulating sleeve before measuring For details on measurement categories see Measurement categories page vi in the instruction manual...

Страница 19: ...Hall elements lack uniformity and it is impossible to determine the amount of variation which depends on time and the temperature When conducting continuous measurement or in an environment where ther...

Страница 20: ...t no bare conductors are improperly exposed Using the instrument in such conditions could cause an electric shock so contact your dealer or Hioki representative for replacements Model L9207 10 Test Le...

Страница 21: ...xvi ___________________________________________________ Preliminary Check ___________________________________________________...

Страница 22: ...______________________ Chapter 1 Overview 1 1 Product Overview The 3285 20 Clamp on AC DC HiTester makes it possible to measure DC AC or AC DC current in live power lines without tapping into or conne...

Страница 23: ...s The true rms value conversion circuit allows accurate measurement of currents with distorted waveforms Measurement for AC DC The instrument permits measurement of AC superimposed on DC as well as me...

Страница 24: ...____________________________________________ 1 3 Names and Functions of Parts _______________________________________________________ 3285 20 1 2 3 4 5 6 7 9 8 13 14 10 12 15 16 11 1 3 Names and Funct...

Страница 25: ...E button Switches between auto and manual ranges in measurements of current voltage or frequency Switches manual ranges Displays a cursor on the bar graph to show the selected range The current ranges...

Страница 26: ...blinks PEAK measures peak values Peak Hold Hz measures frequency in AC or AC DC mode 7 button Switches voltage modes as follows 8 MAX MIN button Displays the maximum value MAX the minimum value MIN or...

Страница 27: ...under no input in the AC A AC DC A AC V or AC DC V modes press HOLD then press 0ADJ RESET to perform a zero cancel correction 10 Clamp sensor To measure current open the top ends of the clamp sensor...

Страница 28: ...Alternating Current AC Alternating Current and Direct Current AC DC ADJ Auto zero adjustment or zero cancel correction function is active Battery low warning HOLD Data hold function APS Auto power off...

Страница 29: ...RMS True root mean square value A Current hour 1 hour segment bar graph min 1 minute segment bar graph Input over bar graph 14 Voltage resistance input terminal V and COM terminals Connected to the L...

Страница 30: ...sleeves If the sleeves are inadvertently removed during measurement be especially careful in handling the test leads to avoid electric shock The tips of the metal pins are sharp so take care not to i...

Страница 31: ...O range 200 0 A range 2000 A range SLOW FAST PEAK NORMAL SLOW FAST PEAK Hz NORMAL SLOW FAST PEAK Hz NORMAL MAX MIN button MAX MIN AVE Instantaneous value MAX MIN AVE MAX MIN AVE 0ADJ RESET button Auto...

Страница 32: ...K Hz NORMAL SLOW FAST PEAK Hz NORMAL MAX MIN button MAX MIN AVE MAX MIN AVE MAX MIN AVE 0ADJ RESET button Auto zero adjustment Disabled Disabled HOLD 0ADJ RESET button Disabled zero cancel correction...

Страница 33: ...ge 10 00 Hz range 100 0 Hz range RANGE button MAX MIN button MAX MIN AVE MAX MIN AVE 0ADJ RESET button Disabled Disabled 1000 Hz range Hz NORMAL Current mode Voltage mode AUTO range 10 00 Hz range 100...

Страница 34: ...polarity 0 Not measurable 0 Not measurable AC 0 Not measurable zero displayed 0 O RMS value 0 Not measurable AC DC 0 O RMS value without polarity 0 O RMS value 0 O RMS value 1 5 Modes For voltage and...

Страница 35: ...14 _______________________________________________________ 1 5 Modes _______________________________________________________...

Страница 36: ...ut 0 5N m is recommended Battery 6F22 006P Chapter 2 Measurement 2 1 Preparations 2 1 1 Installing or Replacing the Battery 1 Remove the two fastening screws of the rear cover using a Phillips screwdr...

Страница 37: ...unds 3 times 2 1 2 Attaching the Hand Strap 2 1 3 Turning the Power On and Off Explains how to attach the hand strap for easy handling of the instrument in the field Power ON 1 Press POWER to turn the...

Страница 38: ...attery life especially when using the REC function Batteries tend to increase in voltage somewhat when left unused for a long period Even if the battery warning annunciator becomes temporarily off aft...

Страница 39: ...The meter must be undamaged To avoid electric shock do not use the meter if it is damaged Test lead insulation must not be scratched or torn and there must be no metal exposed If damage is found to av...

Страница 40: ...ped together will not produce any reading The display may show a measured value bigger than the actual value due to a magnet c field interference The interference is less than 2 A during the measureme...

Страница 41: ...clamp in the current direction of the measured conductor and clamp the conductor so that it passes through the center of the clamp core The DC A mode permits only DC current measurements that does not...

Страница 42: ...easure with guaranteed accuracy before the counter becomes zero Depending on ambient temperatures the counter would not become zero under no input If this happens perform a zero cancel correction See...

Страница 43: ...urrent AC DC A 1 Press button to display 2 Switch between the auto range and the manual range as necessary 3 Please execute auto zero adjustment before measuring Press 0ADJ RESET to make an auto zero...

Страница 44: ...reflects the workings of the internal circuit But you can measure with guaranteed accuracy before the counter becomes zero Depending on ambient temperatures the counter would not become zero under no...

Страница 45: ...e peak value of measured current is retained on the display to simplify reading Peak fluctuations can also be viewed 1 Press button and select a measurement mode for the measured circuit 2 In DC A and...

Страница 46: ...n t become zero under no input in peak measurement mode even though you pressed 0ADJ RESET button to reset the peak data the clamp sensor may be magnetized Quit the peak measurement mode and perform t...

Страница 47: ...en the auto range and the manual range as necessary 4 In case that the counter isn t zero press 0ADJ RESET button to make an auto zero adjustment ADJ annunciator lights to indicate that auto zero adju...

Страница 48: ...rnal corrective calculations 1 Press to display 2 Insert the red test lead to V and the black test lead to COM of the voltage resistance input terminal 3 Switch between the auto range and the manual r...

Страница 49: ...n waveforms half wave rectification waveforms or DC AC waveforms See 1 5 Modes Every range will display up to 125 of the range however only the range from 10 to 100 can be displayed with guaranteed ac...

Страница 50: ...is mode If the connections of test leads are moved the measured values may change but the values are within the guaranteed accuracy In case that you would like to measure DC voltage which doesn t have...

Страница 51: ...to a circuit 7 Before the measurement press 0ADJ RESET button to reset the residual data Be sure to use the test leads with the sleeves attached when performing measurements in the CAT III measuremen...

Страница 52: ...annunciators as follows Select Hz by pressing the button The unit symbol A blinks and a current value is displayed on the bar graph 4 Switch the auto range and the manual range as necessary 5 Open the...

Страница 53: ...such as inverters would not be measurable when the carrier frequencies are lower than several kHz Full wave rectification indicates twice the actual value due to an AC coupling in the internal circui...

Страница 54: ...Hz ranges appears on the counter when the frequency is lower than 10 Hz appears on the counter if the frequency is lower than 1 Hz O L appears on the counter if the frequency is higher than 1 kHz If...

Страница 55: ...ore measuring CAUTION For safety reasons when taking measurements only use the L9207 10 Test Lead provided with the instrument 2 5 Resistance Measurement 1 Press button to display Auto ranging is used...

Страница 56: ...is applied inadvertently the internal circuitry is protected up to 600 VAC If voltage larger than approximately 2 or 3 V is input the Resistance measurement mode cannot be selected If the display sho...

Страница 57: ...e power from the circuit before measuring CAUTION For safety reasons when taking measurements only use the L9207 10 Test Lead provided with the instrument 2 6 Continuity Check 1 Press button to displa...

Страница 58: ...stance is below about 30 If voltage is applied inadvertently the internal circuitry is protected up to 600 VAC The measured resistance value appears on the digital display If voltage larger than appro...

Страница 59: ...38 _______________________________________________________ 2 6 Continuity Check _______________________________________________________...

Страница 60: ...p core is magnetized during a large DC current measurement or when a powerful magnet is placed close to the clamp core 1 Wait until the counter is stable under no input Then press 0ADJ RESET button AD...

Страница 61: ...al range the auto zero adjustment is invalid by changing the range Use the zero cancel correction function when the counter fails to become zero under no input in AC A AC DC A AC V or AC DC V mode 1 P...

Страница 62: ...unction HOLD This function freezes the counter at any desired point for easy reading 1 Press HOLD button HOLD annunciator lights on the display and the digital display value and bar graph display are...

Страница 63: ...ay be altered according to measurement conditions SLOW PEAK Hz button changes an annunciator as follows If the counter fluctuates rapidly and is hard to read you can select a slower update rate once e...

Страница 64: ...ge activates the recording function REC flashes and the instrument saves the maximum value MAX minimum value MIN and average value AVE in internal memory from the instant you press the MAX MIN button...

Страница 65: ...ecording function the bar graph segments flash and the elapsed time appears When min is shown in the right hand corner of the bar graph each segment of the bar graph corresponds to one minute Every ti...

Страница 66: ...s In this mode each segment of the bar graph corresponds to one hour The way to read the bar graph here is similar to reading it in minutes When all bar graph segments remain on the elapsed time is 29...

Страница 67: ...rement check how much the battery power remains Shown on the bar graph at power on When starting the recording function REC in an auto range the range is set as the range of when that pushed MAX MIN b...

Страница 68: ...ction is active If no button is pressed for about 10 minutes the instrument turns itself off automatically Immediately before turning off automatically APS annunciator blinks and a beep tone is heard...

Страница 69: ...___________ 3 6 Beep Tone To disable the beep tone To disable the beep tone hold RANGE button when turning the instrument on by pressing POWER button Warning sounds and the continuity beep cannot be d...

Страница 70: ...uracy Range Resolution DC 200 A 10 0 to 200 0 A 0 1 A 1 3 rdg 3dgt 2000 A 100 to 2000 A 1 A 1 3 rdg 3dgt Range Accuracy Range Resolution 45 to 66Hz 10 to 45 66 to 1kHz 200 A 10 0 to 200 0 A 0 1 A 1 3...

Страница 71: ...esolution 45 to 66Hz 10 to 45 66 to 1kHz 200 A 10 to 500 A 1 A 1 3 rdg 7dgt 2 0 rdg 7dgt 2000 A 100 to 2300 A 1 3 rdg 7dgt 2 0 rdg 7dgt 2300 to 2840 A 6 0 rdg 7dgt Range Accuracy Range ResolutionDC 45...

Страница 72: ...rdg 1dgt 1000 Hz 100 to 1000 Hz 1 Hz 1 0 rdg 1dgt Current Specifications Maximum input current 2000 Arms continuous 2840 Amax See Fig 3 Effect of conductor position within 0 7 in any direction from se...

Страница 73: ...600V 1V 1 0 rdg 3dgt 1 5 rdg 5dgt Range Accuracy Range Resolution DC 45 to 66Hz 10 to 45 66 to 1kHz 30 V 3 00 to 30 00 V 0 01 V 1 0 rdg 13dgt 1 5 rdg 13dgt 300 V 30 0 to 300 0 V 0 1 V 1 0 rdg 7dgt 1 5...

Страница 74: ...20dgt Range Accuracy Range Resolution DC 45 to 66Hz 10 to 45 66 to 1kHz 30 V 3 0 to 75 0 V 0 1 V 1 0 rdg 7dgt 1 5 rdg 7dgt 300 V 30 to 750 V 1 V 1 0 rdg 7dgt 1 5 rdg 7dgt 600 V 60 to 700 V 1 0 rdg 7dg...

Страница 75: ...nge Accuracy Range Resolution Accuracy Overload protection Open terminal voltage 1 k 10 to 999 1 1 5 rdg 5dgt 600 Vrms 3 1 VDC or less 10 k 0 95 k 10 00 k 0 01 k Range Resolution Threshold level Overl...

Страница 76: ...e for current voltage and frequency measurements Data hold Data hold function Auto power off Automatic shutdown after 10 5 1 minutes Beep tone warning before the shutdown Extending and disabling possi...

Страница 77: ...0 Current Voltage 1 s max Frequency 1 s max 1000 Hz 100 Hz range 2 5 s max 10 Hz range Resistance Continuity check 1 1 s max Range switching Auto range manual fixed range selectable except for resista...

Страница 78: ...erature characteristics In 0 to 40 32 to 104 range 0 1 accuracy specifications Storage temperature range 10 to 50 14 to 122 no condensation Power source One 6F22 006P 9 V battery Maximum power consump...

Страница 79: ...58 _______________________________________________________ 4 2 General Specifications _______________________________________________________...

Страница 80: ...n sensor so keep the surfaces clean by gently wiping with a soft cloth To avoid corrosion from battery leakage remove the batteries from the instrument if it is to be stored for a long time The minimu...

Страница 81: ...and instrument immediately turns off Yes indication appears Yes Instrument turns off during use Yes Yes Voltage and resistance cannot be measured Yes If problem persists request service NOTE 5 3 Troub...

Страница 82: ...1 2 Resistance measurement or continuity check If 0 is displayed when the red and black test leads are unconnected open circuit internal circuitry may be damaged requiring repair service The measured...

Страница 83: ...to current measurement only Check that the proper steps have been taken according to procedure described in 3 1 1 Auto zero adjustment function and 3 1 2 Zero cancel correction function Check that you...

Страница 84: ...continuity check If O L is displayed when the test leads are shorted together a test lead may be broken or internal circuitry may be damaged Check for broken test leads by taking a voltage measuremen...

Страница 85: ...cksum error in single chip microcontroller internal ROM Component replacement required Please contact your dealer or HIOKI representative E002 Checksum error in single chip microcontroller internal RA...

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