Table of Contents
Advertisement
Quick Links
Advertisement
Table of Contents
Subscribe to Our Youtube Channel
Related Manuals for HT T2000
Summary of Contents for HT T2000
- Page 1 ENGLISH User manual Copyright HT ITALIA 2014 Release EN 2.01 - 13/03/2014...
-
Page 2: Table Of Contents
4.6.1. HOLD ............................16 4.6.2. MEM ............................17 4.6.3. Anomalous situations ........................17 4.7. Leakage current measurement (T2000) ................18 4.7.1. HOLD ............................18 4.7.2. MEM ............................19 4.7.3. -
Page 3: Precautions And Safety Measures
T2000-T2100 1. PRECAUTIONS AND SAFETY MEASURES This manual refers to two models: T2000 and T2100. Further in this manual, the word “instrument” will be used to generically refer to both models unless otherwise specified. The instrument has been designed in compliance with directive IEC/EN61010-1 relevant to electronic measuring instruments. -
Page 4: During Use
During current measurement (T2000), any other current near the clamp may affect measurement precision. When measuring current (T2000), always put the conductor as near as possible to the middle of the clamp jaw, to obtain the most accurate reading. -
Page 5: General Description
Resistance measurement on earth rods with resistive loop method Direct measurement on earth probes without any cable interruption Measurement of leakage current on earth systems (T2000) Setting of alarm thresholds on measurements Storage of measurement results ... -
Page 6: Preparation For Use
T2000-T2100 3. PREPARATION FOR USE 3.1. INITIAL CHECKS Before shipping, the instrument has been checked from an electric as well as mechanical point of view. All possible precautions have been taken so that the instrument is delivered undamaged. However, we recommend rapidly checking it to detect any damage possibly suffered during transport. -
Page 7: Operating Instructions
“”: increasing the number of memory locations when displaying the saved data. “HOLD”: activating or deactivating the Hold function. ”SET LIM.”: setting the Resistance or Current alarm thresholds (T2000). “3” “”: decreasing the number of memory locations when displaying the saved data. -
Page 8: Display Description
2. Symbol of low battery charge 3. Symbol of saving in the memory 4. Symbol of access to memory area 5. Display of memory location number 6. Current measuring unit (T2000) 7. Resistance measuring unit 8. Symbol of presence of interferences in the measured circuit 9. -
Page 9: Switching On/Off The Instrument
T2000-T2100 4.4. SWITCHING ON/OFF THE INSTRUMENT CAUTION When switching on the instrument, do not operate the clamp lever, do not open the clamp and do not clamp any cable. When the message “OL. ” appears on the display, it is possible to open the clamp and clamp a cable being measured. -
Page 10: Resistance Measurement
T2000-T2100 4.5. RESISTANCE MEASUREMENT CAUTION Measurements carried out by the instrument can be used to evaluate single rods’ resistance values within an earth installation without disconnecting the rods, assuming they do not affect each other. 4.5.1. Operating principle The principle upon which the test carried out by the instrument is based is the “resistive loop resistance measurement”, as shown in Fig. -
Page 11: Clamp Operation Check
T2000-T2100 4.5.2. Clamp operation check 1. Press and hold the multifunction key “1” for more than 2 seconds to switch on the instrument. 2. The displayed message “OL ” indicates that the instrument is ready to carry out measurements 3. Open the jaws (the display will show the screen in Fig. 7) and clamp the test loop provided as accessory (see Fig. -
Page 12: Methods For Resistance Measurement On Earth Rods
T2000-T2100 4.5.3. Methods for resistance measurement on earth rods 1. Press and hold the multifunction key “1” for more than 2s to switch on the instrument. 2. The displayed message “OL ” indicates that the instrument is ready to carry out measurements. -
Page 13: System Composed Of A Single Rod
T2000-T2100 4.5.3.2. System composed of a single rod According to its operating principle, the instrument can only perform measurements on resistive loops. This means that it is not possible to measure systems made of a single rod. In these cases, it is still possible to assess whether the resistance of the rod under test is... - Page 14 T2000-T2100 (B) Measuring the earth resistance of a rod with the 3-point method In this situation, at an appropriate distance from the rod being tested with RA resistance, there are two independent auxiliary rods with resistance RB and RC, having optimal features in terms of earthing (e.g.: metal pipe, reinforced concrete building, etc…), whose...
- Page 15 T2000-T2100 Fig. 13: Three-point method: third test R3 Under these conditions, assuming that the resistance of the cables connecting the rods is negligible, the following relationships are valid: R1 = RA + RB R2 = RB + RC R3 = RC + RA where the values R1, R2 e R3 are measured by the instrument.
-
Page 16: Hold
T2000-T2100 4.5.4. HOLD Shortly pressing the multifunction key “3” activates the “HOLD” function and freezes the result on the display (see Fig. 14). To go back to the normal measuring mode, shortly press the multifunction key “3” again or shortly press the multifunction key “1”... -
Page 17: Current Measurement (T2000)
T2000-T2100 4.6. CURRENT MEASUREMENT (T2000) CAUTION Do not measure AC current values exceeding 20A in order to prevent possible electrical shocks and any damage to the instrument. Fig. 20: AC current measurement 1. Press and hold the multifunction key “1” for more than 2 seconds to switch on the instrument. -
Page 18: Mem
T2000-T2100 4.6.2. MEM Shortly pressing the multifunction key “2” activates the “MEM” function, and the result on the display is saved in the internal memory. For a few seconds, the screen in Fig. 23 is shown, which contains the “MEM” symbol and the number of the location in which this datum has been saved. -
Page 19: Leakage Current Measurement (T2000)
T2000-T2100 4.7. LEAKAGE CURRENT MEASUREMENT (T2000) CAUTION Do not measure AC current values exceeding 20A in order to prevent possible electrical shocks and any damage to the instrument. Fig. 26: Leakage current measurement 1. Press and hold the multifunction key “1” for more than 2 seconds to switch on the instrument. -
Page 20: Mem
T2000-T2100 4.7.2. MEM Shortly pressing the multifunction key “2” activates the “MEM” function, and the result on the display is saved in the internal memory. For a few seconds, the screen in Fig. 29 is shown, which contains the “MEM” symbol and the number of the location in which this datum has been saved. -
Page 21: Managing The Memory
(MEM function), the instrument automatically saves the result in the instrument’s memory, starting from location “01” (see Fig. 32) (T2000 only) Fig. 32: Examples of saving resistance and current measuring results in the memory If the internal memory of the clamp is full, by shortly pressing the multifunction key “2”... -
Page 22: Deleting The Last Datum Saved
T2000-T2100 4. (T2100 only) Press hold multifunction key “1” for more than 2 seconds to show the value of the parallel resistance calculated basing on all the results saved in the instrument’s memory - see 4.5.3.1 (indicated by “PA” symbol on LCD). -
Page 23: Setting Of Alarm Thresholds
The limit values which can be set are: Resistance: from 1Ω to 999Ω Current: from 1mA to 999mA (T2000) 4. Shortly press the multifunction key “1” (ESC function) to confirm the alarm threshold value set and go back to measuring mode. -
Page 24: Rs232 Communication With A Master Instrument (T2100)
CAUTION The clamp has a RS232 half-duplex serial output and, therefore, it can ONLY be connected to suitable HT instruments. Do not connect the clamp’s serial output to other equipment as this may cause damage to the clamp itself. Fig. 40: Connecting T2100 to a MASTER instrument The clamp T2100 allows the following operations: ... -
Page 25: Maintenance
T2000-T2100 5. MAINTENANCE 5.1. GENERAL INFORMATION 1. The instrument you purchased is a precision instrument. While using and storing the instrument, carefully observe the recommendations listed in this manual in order to prevent possible damage or danger during use. 2. Do not use the instrument in environments with high humidity levels or high temperatures. -
Page 26: Technical Specifications
600 1000 (20%rdg + 20) If measured resistance is > 1000, the display shows “OL” Resistance measuring frequency: >1kHz Measuring range of resistance alarm threshold setting: 1 999 TRMS AC Current (T2000) Range Resolution Accuracy 0.00mA 80.00mA (2.5%rdg + 1mA) 0.05mA... -
Page 27: Reference Guidelines
T2000-T2100 6.2.1. Reference guidelines Safety: IEC/EN61010-1, IEC/EN61010-2-032 Insulation: double insulation Pollution level: Max operating altitude: 2000m ; (6562ft) Measurement category: CAT III 150V to earth, Max. 20A 6.2.2. General characteristics Mechanical characteristics Dimensions (L x W x H): 293 x 90 x 66mm ; (12 x 4 x 3in) Weight (batteries included): 1320g ;... -
Page 28: Service
T2000-T2100 7. SERVICE 7.1. WARRANTY CONDITIONS This instrument is warranted against any material or manufacturing defect, in compliance with the general sales conditions. During the warranty period, defective parts may be replaced. However, the manufacturer reserves the right to repair or replace the product.
Need help?
Do you have a question about the T2000 and is the answer not in the manual?
Questions and answers