TOR-3 (TOR-3 SL) Oil Tan Delta Tester
TOR-3 (TOR-3 SL) Oil Tan Delta Tester
Tan Delta | Specific resistivity | Permittivity | Small footprint
The unit is designed for determining the dielectric loss tangent, specific resistivity, and permittivity of transformer oils and other dielectric fluids according to IEC 60247-2004-02 (VDE-0380-2:2005_01), ASTM D924-08, and ASTM D1169-02.
It is a fully automatic device that allows testing according to the procedures defined in these standards, as well as according to the user procedures specified in the appropriate section of the setup menu.
Operating principle
The principle of operation is based on measuring the difference in amplitudes and phases of signals obtained when a test sinusoidal voltage with an effective value of up to 2 kV is applied simultaneously to the reference capacitor and the object of measurement, which is the measuring cell of the unit.
The difference between the amplitudes of the signals taken from the reference capacitor and the internal electrode of the measuring cell is proportional to the dielectric constant of the liquid under study. The phase difference between the signals taken from the reference capacitor and the internal electrode of the measuring cell characterizes the value of the dielectric loss tangent.
| No. |
Parameter |
Value |
| 1 | Operating AC voltage, V |
100–260 |
| 2 | Power frequency, Hz |
48–63 |
| 3 | Power requirement, VA |
Below 250 |
| 4 | Applied measuring АС voltage, kV |
Sinusoidal, 500–2,000 Vrms |
| 5 | Tan δ measurement range |
0.00001–4 |
| 6 | Tan δ measurement resolution |
1х10-6 |
| 7 | Tan δ measurement tolerance |
+/- 1% of measurement + 0.00008 |
| 8 | Dielectric constant (ε) measurement range |
1.0–15.0 |
| 9 | Dielectric constant (ε) measurement tolerance |
+/- 1 % |
| 10 | Electrical capacitance (C) measurement range, pF |
20–1,000 |
| 11 | Electrical capacitance (С) measurement tolerance, pF |
+/- 1 % + 1 |
| 12 | Oil temperature measurement range, ᴼС (oF) |
20–110 (68–230) |
| 13 | Measuring cell volume, cm³ (in³) |
42 (2.6) |
| 14 | Electrical capacitance of empty cell, pF |
65–85 |
| 15 | One measurement duration, minutes, max |
5 |
| 16 | AC frequency setting range, Hz |
45–65 |
| 17 | Temperature measurement resolution, oС (oF) |
0.5 (33) |
| 18 | Integrated printer |
None |
| 19 | Operating temperature, oС (oF) |
0–50 (32–122) |
| 20 | Storage temperature, oС (oF) |
-20 to +60 (-4 to 140) |
| 21 | Relative humidity, % |
Up to 90, non-condensing |
| 22 | Dimensions, mm (in) |
400 х 450 х 300 (15.7 х 17.1 х 11.8)* |
| 23 | Weight, kg (lbs), max |
5.3 (12)* |
* – with installed and connected cell
- fast measurements whith maintaining accuracy;
- the measurement process is automated, controlled by a computer, you can save the results and print them on a printer;
- can be completed with engineering software “Tangent Service”, thanks to which it is possible to view the results online, as well as an archive of measurements in graphic or digital form;
- variability of settings – can be used for research purposes;
- light weight, compact size, easy to use.
Application:
Webinars
GlobeCore Showcased Equipment at TEMCA M&E Expo Thailand 2025
Participation in the International Seminar on Electrical Testing of Transformers, LTCs, and Diagnostic Techniques for Insulating Fluids
Transformer Oil Testing – Transformer Reliability with BDV, Tan Delta, and Dissolved Gas Analysis
FR3 dielectric fluid tan delta tester TOR-3
Midel 7131 transformer oil tan delta tester TOR-3
