User manual IDEAL ND 5481-4 61-164 165

[. . . ] ND 5481-4 61-164 165 Ins 11/21/06 1:28 PM Page 1 #61-165 #61-164 #61-165 The SureTest® w/AFCI, #61-165, also tests arc fault circuit interrupter (AFCI) devices to ensure that AFCI breakers protecting the circuit have been installed correctly. This test disrupts the electrical supply if a functional AFCI is present. This tool also checks for a shared neutral condition that leads to AFCI nuisance tripping. To maintain stated accuracies during repeated use, allow 20 seconds between insertions to adequately dissipate any heat buildup during the load testing. [. . . ] Depressing the side arrow ( ) displays the worst-case scenario where all three conductors (hot, neutral, ground) are shorted together -- the neutral and ground provide a lower impedance via a parallel return path. See the following equations for clarification. 6 Frequency 60HZ High/low frequency 5 ND 5481-4 61-164 165 Ins 11/21/06 1:28 PM Page 7 ASCC1 = Line Voltage (VHN)/ (Hot + Neu ) ASCC2 = Line Voltage (VHN)/ (Hot + 1/(1/Neu + 1/ Grd ) Impedance (Z) Measurements If the voltage drop measurement exceeds 5%, analyze the hot and neutral impedances. If one is significantly higher than the other, the problem is with the conductor with the much higher impedance. The TEST icon and hourglass symbol appear on the display to let the user know that the GFCI test is being performed. The GFCI device should trip within the UL established guideline causing the display to blank out with the loss of power. When the GFCI device is reset, the unit displays the actual trip time that the GFCI took to respond to the current imbalance and open the circuit. Pressing the down arrow button ( ) returns it to the wiring verification mode. If the GFCI fails to trip, the SureTest terminates the test after 6. 5 seconds. Further inspection should determine whether the GFCI circuitry is faulty, the GFCI is installed incorrectly, or if the circuit is protected by a GFCI device. UL Guideline for trip time: 20 1. 43 T=( I ) Where: T = seconds (s) I = milliamps (mA) Hot and Neutral Impedance High conductor impedance Notes: 1) In order to test a GFCI in a 2-wire system (no ground), the #61-175 ground continuity adapter must be used. Connect the alligator clip on the adapter to a ground source, such as to a metal, water or gas pipe. 2) All appliances or equipment on the ground circuit being tested should be unplugged to help avoid erroneous readings. In addition to performing a GFCI test for evaluating personal protection from shock hazards, the SureTest can also conduct testing to ensure equipment protection from ground faults exceeding 30mA. The method of operation is the same as the GFCI test noted in the first paragraph above but uses a different resistor to create a 30mA leakage current from hot-toground. To conduct an EPD test on an Equipment Protective Device, press the GFCI button to enter the GFCI main menu. The GFCI symbol in the display should be highlighted as the default test. The TEST icon and hourglass symbol appear on the display to let the user know that the 8 < 1 to protect people Ground Impedance <0. 25 to protect equipment Check code requirements and re-wire if necessary. Locate high resistance connection/device and repair/replace. 7 ND 5481-4 61-164 165 Ins 11/21/06 1:28 PM Page 9 EPD test is being performed. The EPD should trip causing the display to blank out with the loss of power. When the EPD is reset and power is restored, the unit displays the actual trip time that the EPD took to respond to the current imbalance and open the circuit. Pressing the down arrow button ( ) returns it to the wiring verification mode. If the EPD fails to trip, the SureTest terminates the test after 6. 5 seconds. Further inspection should determine whether the EPD circuitry is faulty, the EPD is installed incorrectly, or if the circuit is protected by an EPD. [. . . ] Service and Replacement Parts: This unit has no user-serviceable parts. To inquiry about service information, call Technical Support at 877 201-9005 or visit our website at www. testersandmeters. com. Sycamore, IL 60178 Shared Neutral Test AFCI does not trip AFCI does trip. Optional Accessories #61-183 Alligator Clip Adapter This adapter allows the SureTest to analyze non-outlet based circuits for branch circuit safety and performance. Simply plug the alligator clip adapter into the IEC connection on the front of the SureTest. [. . . ]