Megger DET10C User Manual Download Page 4 | Manualshive

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FEATURES DESCRIPTION

The clamp-on ground resistance tester enables the user to measure the ground resistance of a ground
rod without the use of auxiliary ground rods. The clamp-on ground resistance tester is used in multi-
grounded systems without disconnecting the ground under test.

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Summary of Contents for DET10C

Page 1: ...M DET10C and DET20C Clamp on Ground Resistance Tester User Manual...

Page 2: ...und tester to twist or pry the ground electrode or ground wire away from the equipment being grounded All metal objects or wires connected to the electrical system should be assumed to be lethal until...

Page 3: ...ng Interval 8 Data Logging 8 Downloading Data to a PC DET20C only 8 Format of Down Loaded Data DET20C only 9 Reading the Data Stored in Memory 9 Clearing the Data Memory 9 Enable RS 232C output DET20C...

Page 4: ...esistance tester enables the user to measure the ground resistance of a ground rod without the use of auxiliary ground rods The clamp on ground resistance tester is used in multi grounded systems with...

Page 5: ...CD panel 5 REC button Function dependant on mode Starts either data logging single measurement recording or data download to PC Also used to increment a value in conjunction with FUNC button 6 FUNC bu...

Page 6: ...Indicates ground resistance tester senses noise or excessive current present in the ground electrode 7 Jaw Open Displayed if the jaws are opened during the measurement this symbol and word OPEN will b...

Page 7: ...amping around the ground electrode NOTE If self calibration does not complete The instrument will continue the process until a successful self calibration is achieved 1 Check the jaw mating surfaces I...

Page 8: ...ction is disabled The HI or LO value can be disabled individually NOTE The HI value cannot be lower than the LO value Similarly the LO value cannot be higher than the HI value HI value will be adjuste...

Page 9: ...REC will be shown on the LCD Data will be recorded at the specified sampling interval Data logging will be stopped if the memory is full or the unit detects a low battery condition or the REC button...

Page 10: ...tion OPEN Jaws open NS Noise HI Hi alarm LO Low alarm HD Data Hold LB Battery low Example of down loaded data 0001 sampling time 10 00 ohm 10 02 ohm 5 200 ohm LO 1 000 ohm NS 1 500 mA 9 00 A NOTE Each...

Page 11: ...putted every 0 5 seconds NOTE The RS 232C output is automatically disabled if data logging is in progress Installation of Megger Download Manager Software DET20C The DET20C instrument is supplied as s...

Page 12: ...plified typical ground distribution system The equivalent circuit is shown in Figure A If R1 R2 R3 Rn are simplified to Req then only Rg and Req are left in the circuit refer to Figure B If a constant...

Page 13: ...12 Rg Rg Req R1 R1 R2 R2 R3 R3 Rn Rn Figure A Figure B...

Page 14: ...and Low Alarm Range Resolution High Alarm 0 1550 1 Lo Alarm 0 1550 1 Ground Leakage Current Auto range 50 60 Hz True RMS Crest Factor 3 5 Range Resolution Accuracy of Reading 0 200 1 000 mA 0 001 mA 2...

Page 15: ...Down 5 minutes approx Sampling Time 0 5 seconds Operating Temperature 0 C to 50 C 14 F to 122 F Operating Humidity Less than 85 RH Storage Temperature 20 C to 60 C 4 F to 122 F Storage Humidity Less t...

Page 16: ...ery with a new battery Remove instrument from test piece during battery change 1 Turn the switch to the OFF position 2 Unfasten the battery cover screw 3 Lift and remove the battery cover 4 Remove the...

Page 17: ...unauthorized prior repair or adjustment will automatically invalidate the Warranty Instrument Repair and Spare Parts For service requirements for Megger Instruments contact Megger Limited or Megger Ar...

Page 18: ...APPES France T 33 1 30 16 08 90 F 33 1 34 61 23 77 OTHER TECHNICAL SALES OFFICES Toronto CANADA Sydney AUSTRALIA Madrid SPAIN Mumbai INDIA and the Kingdom of BAHRAIN Megger products are distributed in...

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