800 Amp Clamp Meters
Contents
1. 60V DC 24V AC 2 EX710 720 730 EU_ENG V3 0 4 05 CAUTIONS e Improper use of this meter can cause damage shock injury or death Read and understand this user manual before operating the meter e Always remove the test leads before replacing the battery or fuses e Inspect the condition of the test leads and the meter itself for any damage before operating the meter Repair or replace any damage before use e Use great care when making measurements if the voltages are greater than 25VAC rms or 35VDC These voltages are considered a shock hazard e Always discharge capacitors and remove power from the device under test before performing Diode Resistance or Continuity tests e Voltage checks on electrical outlets can be difficult and misleading because of the uncertainty of connection to the recessed electrical contacts Other means should be used to ensure that the terminals are not live e If the equipment is used in a manner not specified by the manufacturer the protection provided by the equipment may be impaired e This device is not a toy and must not reach children s hands It contains hazardous objects as well as small parts that the children could swallow In case a child swallows any of them please contact a physician immediately e Do not leave batteries and packing material lying around unattended they can be dangerous for children if they use them as toys e Incase the device is going to be unused for an exte2. 10d AC Current 50 60 Hz AC Voltage 50 60z 1 8 8d 1 5 5d 1 5 5d True RMS on EX720 amp EX730 2 5 8d 2 0 5d 2 0 5d 0 8 2d 0 8 2d 0 8 2d 1 5 2d 1 5 2d 1 5 2d DC Voltage 40 00V DC 2 0 2d 2 0 2d 2 0 2d 1 0 4d 1 0 4d 1 0 4d 3 1 5 2d 1 5 2d 1 5 2d Resistance 2 5 3d 2 5 3d 2 5 3 5 5d 3 5 5d 3 5 5d 5 0 30d 5 0 30d 5 0 30d 5 0 20d 5 0 20d 5 0 20d i 4 000uF 0 5d 3 0 5d 3 0 5d Capacitance 40 00uF 3 4 0 10d 4 0 10d 4 0 10d 10 1 RYRLPR LPR BR Oy AR ALAS Os HR HR RY RI oO slelel ol e s ie oslel SlSlSlelele Se ffselel1e el e S fI1Sl PSlelslPelg 2 2 2 2 8 s 2 2 2 s s 22 eis s iw iw foe enn teed Clo g lt O z 2 e lt 0 la olo o O ols re 5 aja a S Sleo o Says o l j ojlSj js 53 53 535 z aT TY A fo Oo E TT j 10 10d 10 10d 10 10d f 5 2d 1 5 2d 1 5 2d Frequency Sensitivity 100V lt 50Hz 50V 50 to 400Hz 5V 401 to 4000Hz alfalya o e Slole 2 8 Finja 9 EX710 720 730 EU_ENG V3 0 4 05 Range and Resolution Clamp jaw opening Display Continuity check Diode test Low Battery indication Over r
3. electrical shock disconnect the meter from any circuit remove the test leads from the input terminals and turn OFF the meter before opening the case Do not operate the meter with an open case Cleaning and Storage Periodically wipe the case with a damp cloth and mild detergent do not use abrasives or solvents If the meter is not to be used for 60 days or more remove the battery and store it separately Battery Replacement 1 Remove the Phillips head screw that secures the rear battery door 2 Open the battery compartment 3 Replace the 9V battery 4 Secure the battery compartment You as the end user are legally bound Battery ordinance to return all used batteries and accumulators disposal in the household garbage is prohibited You can hand over your used batteries accumulators gratuitously at the collection points for our branches in your community or wherever batteries accumulators are sold Disposal Follow the valid legal stipulations in respect of the disposal of the device at the end of its lifecycle Copyright 2005 Extech Instruments Corporation All rights reserved including the right of reproduction in whole or in part in any form www extech com 11 EX710 720 730 EU_LENG V3 0 4 05
4. User s Guide EXT INSTRUMENTS 800 Amp Clamp Meters EX710 AC Clamp meter EX720 True RMS AC Clamp meter EX730 AC DC True RMS Clamp meter Intro duction Congratulations on your purchase of the EX710 EX720 or EX730 Clamp DMM Careful use of this meter will provide many years of reliable service Safety International Safety Symbols A A E This symbol adjacent to another symbol or terminal indicates the user must refer to the manual for further information This symbol adjacent to a terminal indicates that under normal use hazardous voltages may be present Double insulation SAFETY NOTES Do not exceed the maximum allowable input range of any function Do not apply voltage to meter when resistance function is selected Set the function switch OFF when the meter is not in use Remove the battery if meter is to be stored for longer than 60 days WARNINGS Set function switch to the appropriate position before measuring When measuring volts do not switch to current resistance modes Do not measure current on a circuit whose voltage exceeds 600V When changing ranges always disconnect the test leads from the circuit under test UL Note A UL mark does not indicate that this product has been evaluated for accuracy Function A AC A DC A DC on Model EX730 only 800A DC AC V DC V AC 600V DC AC Resistance Capacitance Frequency Diode Test 250V DC AC Temperature EX720 amp EX730 only
5. ange indication Measurement rate PEAK Temperature sensor Input Impedance AC bandwidth AC response Crest Factor Operating Temperature Storage Temperature Operating Humidity Storage Humidity Operating Altitude Battery Auto power OFF Dimensions amp Weight Safety 4 to 1400 F 3 rdg 9 F 20 to 760 C 3 rdg 5 C General Specifications Accuracy of reading digits 3 rdg 9 F 3 rdg 5 C 1 2 30mm approx 3 3 4 digits 4000 counts backlit LCD Threshold 40Q Test current lt 0 56mA Test current of 0 3mA typical Open circuit voltage lt 3VDC typical BAT is displayed OL display 2 readings per second nominal Captures peaks gt 1ms Type K thermocouple 10MQ VDC and VAC 50 to 400Hz AAC and VAC True rms AAC and VAC on EX720 amp EX730 3 0 in 40A and 400A ranges 1 4 in 800A range 50 60Hz and 5 to 100 of range 41 F to 104 F 5 C to 40 C 4 F to 140 F 20 C to 60 C Max 80 up to 87 F 31 C decreasing linearly to 50 at 104 F 40 C lt 80 7000ft 2000meters maximum One 1 9V Battery After approx 25 minutes 9 0 x 3 1 x 2 0 229 x 80 x 49mm 10 7 oz 303g For indoor use and in accordance with the requirements for double insulation to IEC1010 1 2001 EN61010 1 2001 Overvoltage Category III 600V and Category II 1000V Pollution Degree 2 10 EX710 720 730 EU_ENG V3 0 4 05 Maintenance WARNING To avoid
6. d EX730 only 5 WARNING To avoid electric shock be sure the thermocouple probe has been removed before changing to another measurement function Set the function switch to the TEMP position Insert the Temperature Probe into the negative COM and the V Q CAP TEMP Hz p positive jacks observing polarity Touch the Temperature Probe head to the device under test Continue to touch the part under test with the probe until the reading stabilizes Read the temperature on the display The digital reading will indicate the proper decimal point and value Use the MODE button to select F or C Continuity Measurements 1 Insert the black test lead into the negative COM terminal and the red test lead into the V Q CAP TEMP Hz gt positive terminal 2 Set the function switch to the position 3 Use the MODE button to select continuity The display icons will change when the MODE button is pressed 4 Touch the test probe tips across the circuit or component under test 5 Ifthe resistance is lt 40Q a tone will sound Diode Test 1 Insert the black test lead banana plug into the negative COM jack and the red test lead banana plug into the V 0 CAP TEMP Hz positive jack 2 Turn the function switch to F position Use the MODE button to select the diode function if necessary diode symbol will appear on the LCD when in Diode test mode 3 Touch the test probe tips to the diode or semiconductor junct
7. e test probe tips across the circuit or component under test Read the resistance on the LCD display Capacitance Measurements WARNING To avoid electric shock discharge the capacitor under test before measuring 1 2 Set the function switch to the CAP position Insert the black test lead banana plug into the negative COM jack and the red test lead banana plug into the V 0 CAP TEMP Hz gt F positive jack Touch the test probe tips across the part under test If dISC appears in the display remove and discharge the component Read the capacitance value in the display The display will indicate the proper decimal point and value Note For very large values of capacitance measurement it can take several minutes before the final reading stabilizes Frequency Measurements 1 w N e E E Insert the black test lead banana plug into the negative COM jack and the red test lead banana plug into the V Q CAP TEMP HzZ positive jack Set the function switch to the V Hz Position Press and hold the MODE button to select the Frequency Hz function k Hz will appear in the display Touch the test probe tips across the part under test Read the Frequency value on the display The display will indicate the proper decimal point and value Press and hold the MODE button again to return to the voltage mode 6 EX710 720 730 EU_ENG V3 0 4 05 Temperature Measurements Model EX720 an
8. in this operation manual prior to using this meter Set the function select switch to the OFF position when the meter is not in use AC DC Current Measurements DC Current on Model EX730 only WARNING Ensure that the test leads are disconnected from the meter before making current clamp measurements 1 Set the Function switch to the 800A 400A or 40A range If the approx range of the measurement is not known select the highest range then move to the lower ranges if necessary 2 Use the MODE button to select AC or DC EX730 only 3 Press the DC ZERO button to zero the meter display 4 Press the trigger to open jaw Fully enclose only one conductor For optimum results center the conductor in the jaw 5 The clamp meter LCD will display the reading Correct Incorrect AC DC Voltage Measurements 1 Insert the black test lead into the negative COM terminal and the red test lead into the positive V Q CAP TEMP Hz gt terminal Set the function switch to the V Hz position Use the MODE button to select AC or DC Voltage Connect the test leads in parallel to the circuit under test Read the voltage measurement on the LCD display af ON 5 EX710 720 730 EU_ENG V3 0 4 05 Resistance Measurements 1 Insert the black test lead into the negative COM terminal and the red test lead into the V Q CAP TEMP Hz gt positive terminal Set the function switch to the Q position Touch th
9. ion under test Note the meter reading Reverse the test lead polarity by reversing the red and black leads Note this reading The diode or junction can be evaluated as follows If one reading displays a value typically 0 400V to 0 900V and the other reading displays OL the diode is good If both readings display OL the device is open e f both readings are very small or 0 the device is shorted 7 EX710 720 730 EU_ENG V3 0 4 05 Data Hold To freeze the LCD reading press the HOLD button While data hold is active the HOLD icon appears on the LCD Press the HOLD button again to return to normal operation DC ZERO Relative EX730 only The DC ZERO is a relative feature and can be used in any function 1 Press the DC ZERO button to zero the display ZERO will appear in the display The displayed reading is now the actual value less the stored zero value 2 Press the DC ZERO button to view the stored value ZERO will flash in the display To exit this mode press and Hold the ZERO button until ZERO is no longer in the display Peak Hold The Peak Hold function captures the peak AC or DC voltage or current The meter can capture negative or positive peaks as fast as 1 millisecond in duration Turn the function switch to the A or V position Use the MODE button to select AC or DC ADC EX730 only Allow time for the display to stabilize Press and Hold the PEAK button until CAL appea
10. nded period of time remove the batteries to prevent them from training e Expired or damaged batteries can cause cauterization on contact with the skin Always therefore use suitable hand gloves in such cases e See that the batteries are not short circuited Do not throw batteries into the fire 3 EX710 720 730 EU_LENG V3 0 4 05 Description Meter Description Picture of EX730 1 Current clamp 2 Clamp opening trigger 3 Control buttons e Data Hold e Mode e Peak e Backlight DCA Zero EX730 only Backlit LCD Display COM negative input jack for black test lead Rotary function switch V Q CAP TEMP Hz gt positive input jack for red lead AION OLUR Display icons Description HOLD Data Hold Minus sign Negative reading display 0 to 3999 Measurement display digits DC ZERO DCA Zero Model EX730 only PEAK Peak capture AUTO Auto Range mode DC AC Direct Current Alternating Current BAT Low battery mV or V Milli volts or Volts Voltage Q Ohms Resistance A Amperes Current F Farad Capacitance Hz Hertz Frequency F and C Fahrenheit and Celsius units Temperature Model EX730 only n m p M k Unit of measure prefixes nano milli micro mega and kilo e Continuity test gt Diode test HOLD ZERO PEAK P AUTO npmF MkQOHz gt F c A BAT 4 EX710 720 730 EU_ENG V3 0 4 05 Operation NOTES Read and understand all Warning and Caution statements
11. rs in the display This procedure will zero the range selected Press the PEAK button Pmax will display PON 6 The display will update each time a higher positive peak occurs 7 Press the PEAK button again Pmin will display The display will now update and indicate the lowest negative peak 8 To return to normal operation press and hold the PEAK button until the Pmin or Pmax indicator switches off Note If the Function switch position is changed after a calibration the Peak Hold calibration must be repeated for the new function selected LCD Backlight Button The LCD is equipped with backlighting Press the backlight button to turn the backlight on Press again to turn the backlight off Automatic Power OFF In order to conserve battery life the meter will automatically turn off after approximately 25 minutes To turn the meter on again turn the function switch to the OFF position and then to the desired function position 8 EX710 720 730 EU_LENG V3 0 4 05 Specifications Accuracy Function Range amp of reading digits Resolution EX710 EX720 40 00A AC 2 8 10d 2 5 10d 400 0A AC 2 8 8d 2 5 8d 2 5 8d True RMS on EX720 amp Ex730 800A AC 3 0 8d 2 8 5d 2 8 5d DC Current 40 00A DC 2 5 7d EX730 only 400 0A DC NA NA 2 5 5d 2 8 5d 1 5 10d 1 0 10d 1 0 10d EX730 2 5
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