User manual IDEAL ND2292

[. . . ] #61-156 #61-157 #61-158 SureTest® Model ST-1THD & ST-1THDC Instructions Introduction The SureTest® family of Circuit/distortion analyzers identify problems common to electrical circuits and harmonic distortion quickly, easily and accurately. They have a patented voltage drop test, which applies a full 15-ampere load without causing interruption to equipment on the circuit. This family also features 64K of memory to store and recall up to 36 hours of testing. Product Features · Identifies and Locates Loose Wire Connections Bad Splices/Receptacles High Resistance Grounds False (Bootleg) Grounds Shared Neutrals · Verifies Proper GFCI Operation Dedicated Circuit Presence Isolated Ground Presence (with the 61-176 Adapter) · Measures True RMS Line Voltage Resistance of Hot and Neutral Conductors Ground Impedance % Voltage Drop by Conducting an Actual Full 15 Amp Load Test % Voltage Drop by Simulating a 20 Amp Load Test GFCI Trip Time True RMS Neutral-to-Ground Voltage Estimated Load on Circuit Line Frequency Power Consumption Power Factor % Total Harmonic Distortion (THD) in the Line Voltage (to the 31st Harmonic) Product Features · Measures % THD in the Neutral Current (to the 31st Harmonic) True RMS Current with the 61-181 Clamp Adapter (ST-1THDC) · Event Recording Captures up to 36 hours of testing Min/Max/Avg/Peak Line Voltage Resistance in Hot, Neutral, and Ground Conductors Min/Max/Avg/Peak Neutral-to-Ground Voltage % THD in the Line Voltage and Neutral Current % THD per Harmonic up to the 31st Harmonic Line Frequency General Operation The SureTest Models ST-1THD and ST-1THDC Circuit/Distortion Analyzers take only seconds to test each outlet and circuit under a full load. [. . . ] 7 8 GFCI Menu (continued) · Menu Heading - "GFC=" · Measurement at Menu Heading - None · Submenu - No Pressing the display advance button for three seconds will activate the GFCI test. The ST-1THD applies 6mA to ground through a fixed resistor to trip the GFCI. A functional GFCI will disconnect the power. The reset may be at the outlet or at the panel. The tester will display the calculated time to trip, apply the current and count up to the calculated time. · If the GFCI is functioning properly, the circuit will disconnect, and the LED display on the ST-1THD will go out. When the circuit is reset, and power is returned, the LED display will show the actual time to trip. · If the GFCI fails to trip, the LED display will show "bAd", which indicates that the GFCI may be installed incorrectly, or the GFCI may be defective. It is important to note that pressing the blinking "rCL" to exit viewing recorded data stores new data into permanent memory. If you wish to maintain the stored data, but want to return to standard operation mode, unplug the SureTest and re-insert it into the receptacle. The SureTest will return to operation mode. · Menu Heading - "rCL-" · Measurement at Menu Heading - None · Submenu - yes Blinking "rCL" - Allows access to stored values from memory "Sto" - Stores values into memory Harmonic Wave Form Testing To access the harmonic wave form programming menu, press the display advance button and insert the ST-1THD into the receptacle. "HAr" will be shown on the LED display . The LED display cycles between the menu heading, and the measurement every four seconds. Press and hold the display advance button for one second to move to the menu. To enter the submenu, press the display advance button for three seconds. To navigate from measurement to measurement within the submenu, press the display advance button. While in the submenu, pressing and holding the display advance button for three seconds brings the unit back to the menu structure. Press the display advance button and insert the ST-1THD into the receptacle 2. The LED display shows "HAr" indicating self-calibration of the unit 3. Line Voltage Harmonics Menu · Menu Heading - "LH-" · Measurement at Menu Heading - None · Submenu - yes "h3=" - % THD at 3rd harmonic "h5=" - % THD at 5th harmonic "h7=". . . "h15" - % THD is given for every odd harmonic to the 15th harmonic "bAL=" - Total of the remaining %THD from the 17th to 31st harmonic % Neutral Current THD Menu · Menu Heading - "nt-" · Measurement at Menu Heading - % Neutral Current THD · Submenu - yes "Hi=" - Highest % THD "Lo=" - Lowest % THD "A=" - Average % THD "nC=" - Crest factor of the neutral current Neutral Current Harmonics Menu · Menu Heading - "nC-" · Measurement at Menu Heading - None · Submenu - yes "h3=" - % THD at 3rd harmonic "h5=" - % THD at 5th harmonic "h7=". . . "h15" - % THD is given for every odd harmonic to the 15th harmonic "bAL=" - Total of the remaining %THD from the 17th to 31st harmonic bAL= nt% Neutral Current THD Hi= Lo= A= nC= Neutral Current Harmonics h3= h5=Öh15= bAL= nH- Frequency Value rCL= Recall Memory Blinking rCL SureTest is Recording Data Sto Recording Completed 11 12 Line Frequency Within this menu selection, the ST-1THD displays the line frequency of the current. There is no submenu for this menu selection. Recall Memory Menu (Event Recording) Stored data can be viewed from the Recall Memory menu. [. . . ] Clip the ground wire to the metal outlet, center receptacle screw, or the metal outlet box. Re-insert the ST-1THD into the receptacle and retest for ground impedance. If the two resistance readings are the same, then the receptacle is not isolated. If the receptacle is isolated, the reading with the #61-176 will be lower. [. . . ]