Clamp-On GrOund resistanCe tester
Contents
1. Auto Ranging fae Saunas Resistance Measurement Frequency ww o o MECHANICAL Weight I KG U S Patet PN 8626389 UL File No DISPLAY 3 Digit 1 73 x 1 10 44 x 28mm ENVIRONMENTAL 14 to 131 F 10 to 55 C 10 to 90 RH 14 to 104 F 10 to 40 C 75 RH 131 F 55 C 22 to 158 F 30 to 70 C SAFETY EN 61010 2 032 Class 2 Double Insulation Yes CEMark S Yes Clamp On Ground Resistance Tester Models 3711 amp 3731 include a calibration loop battery and user manual in a hard carrying case GANE 6 Calibration Check Loop included ORDERING INFORMATION CATALOG NO Ground Resistance Tester Model 3711 Clamp On Cat 2117 60 Includes 9V Alkaline battery 25Q calibration check loop hard carrying case and user manual Ground Resistance Tester Model 3731 Clamp On with memory and alarm Cat 2117 61 Includes 9V Alkaline battery 25Q calibration check loop hard carrying case and user manual AEMC CU source For All Your Electrical Test amp Measurement Instruments Call the AEMC Instruments Technical Assistance Hotline for immediate consultation with an applications engineer 800 343 1391 Chauvin Arnoux Inc d b a AEMC Instruments 200 Foxborough Blvd e Foxborough MA 02035 USA e 800 343 1391 508 698 2115 Fax 508 698 2118 Visit our website at www aemc com 950 BR 3711 31_0210Rev04 Printed in the USA2. CLAMP ON GROUND RESISTANCE TESTER Models 3711 amp 3731 z ce Fai ris E hi i io il a He CPE Te ie aeme Model 3731 CE We GF gt Measure down to 0 1 with resolution of 0 010 gt Fast settling time approximately one second gt High immunity to electrical noise for work around transmission towers and substations gt Extended battery life over 1000 tests Auto Off gt Rugged jaw construction withstands heavy outdoor usage gt Smooth jaw matting surfaces easily cleaned to maintain reading accordingly gt US Patent Number 362 639 AEMC z INSTRUMENTS 4 CHAUVIN ARNOUX GROUP gt Simple and fast clamp on operation no leads no auxiliary rods or spacing requirements Direct reading of ground resistance from 0 19 to 1200Q Direct reading of continuity and ground loop resistance Direct reading of ground leakage or phase current from 1mA to 30Arms Jaw design with large 1 25 32mm window accommodates up to 1000kcmil cables gt Auto Off for power management Model 3731 performing a ground rod resistance check gt Alarm function with adjustable set point and buzzer for quick field checks The Models 3711 and 3731 measure ground rod and grid resistance Model 3731 in any environment without the use of auxiliary ground rods Clamp on Memory function to store 99 field ground resistance testers are used on multi grounded systems measurem
3. ctors on poles and in manholes The 1 25 82mm opening accommodates not only ground rods but also larger ground conductors up to 1000kcmil typically found in telecommunication buildings or railroad applications The inner jaw is composed of two independent and individually shielded magnetic cores permitting measurement without noise interference or cross talk common to instruments with separate probes Thorough mechanical design including small winglets ensures reliable and repetitive jaw alignment for accuracy and prevents undesirable contaminations into the jaw spring assembly The smooth head surfaces eliminate the build up of foreign particles that cause errors in reading CE requirements and design minimize electromagnetic interference near substations and tower sites The ergonomic body design permits one handed operation The guard provides additional strength and prevents the hand from slipping or coming into contact with conductors under test The LCD lens cover may be easily replaced if scratched The sealed push buttons directly access all test functions and are easily operated even with gloved hands _t Head assembly The smooth head surface eliminates Hold button build up of foreign particles and improves reading accuracy Lever for jaw 3000 count opening closing liquid crystal display Memory ON OFF button button AL button to Resistance activate deactivate Current measurement the alarm functi
4. e pass or fail readings will suffice Hold Function V psc v v x S W CEA Noise indicator wd 7 open Jaw Indicator v closed Loop indicator v Mutt Tone Beeper 7 7 mam Function E memory togo 7 SISIS Measure electrical ground rod and grid resistance Use on multi grounded systems without disconnecting the ground rod under test Measure resistance and continuity of grounding loops around pads and buildings Measure leakage current flowing to ground or circulating in ground systems Conduct field surveys and retrieve and analyze readings at a later time Use on cell towers and telecommunication sites Use on pools spas and other consumer installations SISINIS 2 www aemc com Technical Assistance 800 343 1391 C AEMC The Models 3711 and 3731 bodies are built of Lexan or equivalent polycarbonate for rugged use The probe heads are encapsulated in a double walled shell for extra strength and reinforced for enhanced field reliability Overall construction and mechanical design ratings such as drop test shock vibration and weatherproofing against water penetration or dust meet or exceed IEC standards These products have also been designed to EN 61010 Cat Ill and are UL approved and are CE Marked The probe head jaw is a key component in the measurement and overall product performance The large jaw thickness permits use on tight ground condu
5. ents for later retrieval and without disconnecting the ground under test The Models 3711 and analysis Model 3731 3731 simply clamp around the ground conductor or rod and measures gt Meets EN 61010 Cat III the resistance to ground fast and accurately E Mark L By performing measurements on installed ground systems the user CE Mark and UL approved and double also verifies the quality of the grounding connections and bonds nguleg Resistance and continuity of grounding loops around pads and Rugged Lexan head and body buildings may also be measured construction resists breakage Both models include a current measurement function The probe s Instrument s alarm settings and stored high sensitivity enables measurement of leakage current flowing to memory information saved during ground or circulating in ground loops down to 1mA as well as neutral shutdown Model 3731 and phase currents to 30Arms This feature provides additional infor gt Patented design mation which is vital in distribution ground networks carrying higher levels of noise and harmonics that affect power quality The Model 3731 offers an alarm function and a memory logging function In the alarm mode the probe will audibly and visually indicate 3741 3731 readings beyond set point The user may also have the alarm initiated OhmsRange Vv above or below the set point This alarm feature permits quick field Arms Range a checks wher
6. on Measurement button button AE AEMG Technical Assistance 800 343 1391 OVERVIEW OF FUNCTIONS e111 PEE NOISE C RGIS A Oooo G g e2 8 1906 Q Displayed when measuring resistance mA A Displayed when measuring current 20 Percentage of battery life remaining Flashing indicates low battery condition P Indicates the Auto Off feature is inactive Indicates Alarm Active Hi or Lo depending on which arrow is displayed HOLD HOLD pushbutton has been pressed e11 Active beeper function NOISE Noise in the reading Probe jaws not closed properly Alarm set points Memory function active Memory Recall MR and location from 1 to 99 Resistance measured is below 1Q BUTTONS ON OFF Power ON or power OFF Activates display self test at power up O P Resistance measurement Adjusts the alarm set point and the memory position when in programming mode A lt Current measurement Adjusts the alarm set point and the memory position when in programming mode AL Model 3731 only Activate deactivate the alarm function Access the value of the alarm set point when in programming mode MEM Model 3731 only Activate the memory function or to read the stored values in MR Memory Recall Clears the memory when in programming mode www aemc com 3 ELECTRICAL Ground Resistance Ranges Measurement Range Resolution Accuracy of Reading Auto Ranging 0 01 to 12000 Current Measurement Ranges
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