GC-1000 Manual - Advanced Test Equipment Rentals
Contents
1. If the light is off there is no impedance zeroed If the zero light is on and you do not wish to use the zero feature see the steps for removing the zero 4 Plug the product you wish to testinto the receptacle on the front of your ground impedance tester 5 Connect the RETURN lead to the grounded part of the chassis that you wish to test Make sure that the part being tested where you are connecting the RETURN lead is part of the grounding system for the product under test NOTE If at any time you wish to stop the test press the red STOP RESET button Wait until the TESTING light has turned off before contacting the product under test 6 Nowpress the blue START button The TESTING light should come on and the measured grounding impedance will be displayed throughout the test NOTE If at any time you wish to stop the test press the red STOP RESET button Wait until the TESTING light has turned off before contacting the product under test 7 The PASS light will turn on at the completion of the test indicating that the grounding circuit impedance has not exceeded 0 1 ohms At the completion of the test the measured impedance will remain displayed until you push the start button again This gives you unlimited time to write down your results before continuing with another test 8 Ifthe FAIL light turns on and the display indicates FAIL the impedance measured has exceeded 0 1 ohms Wait until the TESTING light has turned of2. Advanced Test Equipment Rentals A ished 1981 www atecorp com 800 404 ATEC 2832 E D amp D USER S MANUAL GROUND IMPEDANCE TESTER MODEL GC 1000 Educated Design amp Development Inc 2200 Gateway Centre Blvd Suite 215 Morrisville NC 27560 Phone 919 469 9434 Fax 919 469 5743 Web www productsafet com INTRODUCTION Your NEW high current ground impedance tester is specifically designed for ease of use As such you will find that there are very few instructions needed to operate this piece of equipment HOWEVER you should note that the ground impedance tester AKA ground continuity tester or earthing tester involves HIGH CURRENT which can present a safety hazard Proper precautions should be taken to prevent contact with the product under test or the cord to the product under test when the red TESTING light is illuminated You are responsible for providing a safe environment in which to perform this test DANGER THE GROUND IMPEDANCE TEST INVOLVES HIGH CURRENT AVOID TOUCHING THE PRODUCT UNDER TEST OR THE CABLE TO THE PRODUCT UNDER TEST WHILE THE TESTING LIGHT IS ON BASIC OPERATING THEORY The GC1000 Automatic Ground Impedance Tester utilizes high current for measuring the grounding circuit impedance of a product The GC1000 applies a constant AC test current 25A or 30A and measures the voltage drop across the grounding path being tested The resulting impedance is displayed with a 0 10 ohm pass f
3. ail trip limit The test current is provided in the series path from the ground pin of the front panel receptacle through the grounding path being tested to the RETURN lead SPECIFICATIONS Test Current 25A or 30A AC TRMS selectable Failure Indication Impedance trip limit 0 1 ohms T second 60 second selectable Output Receptacle Universal Receptacle accepts NEMA 5 15 5 20 6 15 and 6 20 plug configurations U S Canadian 120V amp 240V 15A amp 20A Input Voltage Wired for 100 120 or 220 240 VAC nput Current 2A Input Frequency 50 60 Hz Accuracy t 2 12 Ibs 12 W x 11 D x 5 H SET UP AND OPERATING INSTRUCTIONS 1 Your tester is factory wired for an input voltage of either 100 120 VAC or 220 240 VAC See the label on the rear of your ground impedance tester to determine which voltage range your tester is pre wired Contact ED amp D if you need to change the input voltage configuration for your ground impedance tester Plug the Ground impedance tester into the appropriate power source 2 Turn the Ground impedance tester on At this time the ready light will turn on and the displaywill indicate OL overload due to the open test circuit 3 Select 25A or 30A test current and 1 or 60 second test time by pushing the appropriate front panel button See below for use of the zero feature Note that the zero light on means that the RETURN lead impedance has been zeroed and stored into memory
4. ease see the enclosed warranty 4 If you have any other questions or comments feel free to write us Customer Service Dept ED amp D Inc Research Triangle Park 2200 Gateway Centre Blvd Suite 215 Morrisville NC 27560 USA
5. f before examining the product under test WARNING always disconnect the product under test from the ground impedance tester before touching the product under test IF YOU GET FAILING RESULTS see the section below titled Zeroing Out Lead Impedance 9 You are now set up and ready for repeated testing To change the test current or test time repeat step 4 Remember if you have a failing result make sure you have zeroed out the RETURN lead impedance Likewise if you are not getting failing results without the RETURN lead impedance zeroed you don t need to use the zero feature DANGER THE GROUND IMPEDANCE TEST INVOLVES HIGH CURRENT AVOID TOUCHING THE PRODUCT UNDER TEST OR THE CABLE TO THE PRODUCT UNDER TEST WHILE THE TESTING LIGHT IS ON ZEROING OUT LEAD IMPEDENCE A unique feature of the GC1000 is the ability to remove the test lead impedance from the measurement RETURN lead impedance Note that you really only need to zero out the lead impedance if you are getting failing data over 0 1 ohms without the zero feature During the zeroing process the GC1000 measures the lead impedance and stores this data in memory Then during each test the cord impedance is automatically subtracted from the overall impedance to display only the products grounding circuit impedance If you need this feature follow the steps below To clear the zero e Quickly push and release the zero button The zero light should turn off
6. meaning there is no zero in memory To set the zero 1 Clear the previous zero by quickly pushing and releasing the zero button The zero light should be off 2 Connect the RETURN lead to the metal lug on the rear panel of the GC1000 This lug is located just below the power cord entry module 3 Depress and hold the zero button until the test current light begins flashing 25A or 30A light Once this light begins to flash you no longer need to hold the zero button 4 When the test current light quits flashing the zero light will stay lit indicating that the zero has been stored in memory The display will read OL after completing the zero process 5 The RETURN lead impedance is now stored in memory and will not be included in all future measurements until the zero is removed from memory You may disconnect the RETURN lead from the rear panel grounding lug SERVICE INSTRUCTIONS 1 Do NOT attempt to repair or adjust any electrical or mechanical functions on this unit Doing so will void the warranty 2 If you have any questions regarding this unit s operation or believe any repair is necessary please call 1 800 806 6236 or 1 919 469 9434 and ask to speak with an Engineer in our Technical Department 3 If you need to exchange the unit please return it in its original carton to our main location in Research Triangle Park Morrisville NC If you are returning the unit more than 30 days after the date of purchase pl
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