Product Introduction
UHV-340 Transformer Tan Delta Tester is a kind of instrument with high precision fully automatic measuring the dielectric loss tangent and capacitance of various high voltage electrical equipments in the power plants and substations. The adoption of frequency conversion technology could ensure the accurate measurement in the interference of strong electric field.
Technical parameters
| High voltage output | 0.5~10kV Increasing by 500V for each level, a total of 20 levels, capacity: 1500VA |
| Accuracy | tgδ: ± (reading * 1.5% +0.06%) |
| Cx: ± (reading * 1.5% +5 PF) | |
| Resolution | tgδ: 0.001% Cx: 0.001pF |
| Measuring range | tgδ: 0.001% ~ 100% |
| Internal high pressure : 3PF~60000PF/10KV 60PF～1µF/0.5KV | |
| External high pressure: 3PF~1.5µF/10KV 60PF～30µF/0.5KV | |
| CVT Variable ratio test | Variation ratio measurement accuracy: ± reading *1% |
| The range of the measurement: 10～99999 | |
| Phase measurement accuracy: ±0.1° | |
| Phase measurement range: 0～359.9° | |
| Power supply | AC 220V ± 10% 50/60 ± 1Hz |
| Measuring method | a.single frequency: 45(45Hz measuring)、50(50Hz measuring)、55(55Hz measuring)、60(60Hz measuring)、65(65Hz measuring) |
| b.different frequency: 50D(45Hz/55Hz measure each time) 60D(55Hz/65Hz measure each time) Automatic frequency conversion | |
| Harmonic adaptation | ≤3% |
| Application condition | -15 ℃－50 ℃ |
| Relative humidity | |
| Dimension | 460 (L) × 345 (W) × 345 (H) |
| Weight | 35kg |
Feature:
1.Frequency conversion anti-interference: the use of frequency conversion anti-interference technology, in 200% interference can still be accurately measured, the test data is stable, suitable for on-site anti-interference dielectric loss test.
2.High precision measurement: frequency floating, digital waveform analysis and bridge self-calibration technology, with high precision three-end standard capacitor, to achieve high precision dielectric loss measurement, and positive/reverse connection measurement accuracy and stability is consistent.
3.All range input resistance of the instrument is lower than 2Ω, eliminating the influence of additional capacitance of the test line.
4.Can be connected to the external oil cup to do precision insulation oil dielectric loss test, can be connected to the solid material measurement electrode to do precision insulation dielectric loss test.
5.Good compatibility: automatically identify 50Hz / 60Hz system power supply, support generator power supply, even if the frequency fluctuation is large, can also be measured normally.
6.Built-in series and parallel two kinds of dielectric loss measurement model, can be fully compatible with the calibration platform and dielectric loss standard, convenient instrument verification.
7.Multi level security protection to ensure personal and equipment safety.
8.High voltage protection: test short circuit, breakdown or high voltage current fluctuation, can cut off the output by short circuit.
9.Low voltage protection: misconnection 380V, power supply fluctuation or sudden power failure, start protection, will not cause overvoltage.
10.Grounding protection: the instrument grounding is bad so that the shell with dangerous voltage, start grounding protection.
11.CVT: high voltage and current, low voltage and current four protection limits, will not damage the equipment; Incorrect menu selection does not output excitation voltage. There is no 10kV high voltage output during CVT measurement.
12.Anti “capacity rise”: when measuring large capacity test products will appear voltage rise “capacity rise” effect, the instrument can automatically track the output voltage, keep the test voltage constant.
13.Seismic performance: the instrument adopts unique seismic design, can withstand strong long-distance transportation vibration, turbulence without damage.
14.High voltage cable: high voltage insulated wire, can be used to mop the floor.
15.Technical breakthrough, powerful function, with external standard capacitor interface, automatic tracking of external test power frequency 40Hz~70Hz, support frequency power supply and series resonant power supply to do large capacity high voltage dielectric loss test.
16.With circuit contact bad discharge prompt function, to facilitate the identification of wiring is reliable.
17.With CVT self-excitation method measurement function, C1/C2 can be measured at the same time, automatic compensation busbar grounding and standard capacitor partial voltage influence, no need to change the line and external any accessories, and high voltage connection line can mop the floor.
18.With reverse wiring low voltage shielding function, in the 220kVCVT busbar grounding case, the C11 can be carried out without stripping 10kV reverse wiring dielectric loss measurement, and can be a connection at the same time to the main and slave two capacitance measurement.
19.Chinese text menu, large screen backlight LCD display.
20.Configuration of thermal printer, printing data clear and fast, no noise.
21.With calendar clock, can store 100 groups of measurement data.
