Transformer capacity tester is a special instrument for power distribution transformer capacity measurement, transformer no-load and short-circuit loss measurement, and has the function of harmonic analysis, convenient for on-site power grid quality analysis.The instrument circuit design is ingenious, the idea is unique, the instrument adopts the advanced six synchronous AC sampling and digital signal processing technology, successfully solved the low power factor measurement and multi-channel signal under the condition of electricity synchronous measurement and calculation of the problem.At the same time, the instrument measurement introduced the necessary correction (such as: voltage correction, current correction, temperature correction, frequency correction) data is accurate and reliable, can completely replace the traditional instrument test method, can display and record all the measurement data users care about, can be used as a high-precision AC field indicator instrument.
1. Measurement of load loss:
Display three-phase voltage, three-phase current, three-phase power, automatically calculate the percentage of impedance voltage transformer, temperature conversion), shed the rated voltage, load loss automatically judge the oil-immersed or dry type distribution transformer core model, the alarm test process of adaptive prompt functions, convenient for users.
2. Measurement of no-load loss:
The instrument displays the three-phase voltage, three-phase current and three-phase power. The instrument displays the distortion rate of the applied power supply waveform, and automatically calculates the no-load loss when the no-load current of the transformer is converted to the rated voltage and the waveform distortion correction is carried out. It also displays the type of the oil-immersed or dry-type distribution transformer core.
3. Single phase measurement:
It can be used to check the defects of single phase transformer or for the situation that there is no three phase power on site.The instrument can record the data of three single-phase measurements, and calculate the no-load current, no-load loss, impedance voltage and load loss of the transformer according to the different connection modes of the transformer.
4. Measurement of zero-sequence impedance:
The measurement of zero sequence impedance is applicable to the transformer with neutral point in star connection at high voltage side. The instrument can record zero sequence impedance, zero sequence reactance, zero sequence inductance, impedance Angle and zero sequence resistance.
5. Capacity measurement:
Instrument built-in rechargeable lithium battery, itself can output three-phase sine wave inverter power supply, automatically adjust the output voltage, with soft opening and soft stop function, without any external power supply which can realize the measurement of distribution transformer capacity and judgment of the model, at the same time shows the transformer impedance voltage and temperature conversion), rated power flow load loss.
6. In the allowable measurement range of the instrument, direct measurement can be made; outside the measurement range, external voltage and current transformer can be connected. The instrument can set the ratio of external voltage and current transformer to directly display the applied voltage and current value.
7. The instrument has the function of harmonic analysis, which can measure the inclusion rate of multiple harmonics and the total distortion rate, and has the original waveform and histogram display.
8. The instrument adopts large LCD display, which can display three-phase voltage, three-phase current, three-phase power, three-phase average voltage, three-phase average current, three-phase total power and related data on the same screen.Display using Chinese menu, Chinese prompt, easy to operate.
9. AC/DC dual use: lithium battery power supply or 220V AC charger power supply adaptive.
10. Intelligent charging management, display of remaining electric quantity, low electric quantity alarm, automatic backlight adjustment, saving electric quantity.
11. No power off clock and date display;Data storage can be divided into local storage and USB drive storage, in which the local storage can store 200 test data, and the local storage can be transferred to USB drive;The format of data stored on USB drive is Word format, which can be edited and printed directly on the computer.
12. Thermal printer printing function, fast and silent.
13. The human-computer interaction interface is more friendly: the status bar at the top of the screen displays the flash drive insertion status in real time, and the corresponding unconnected prompt information will be displayed when the device is operated without connection.
14. Small size, light weight, easy to carry and use.
1.Basic measurement accuracy: voltage and current ± (reading x 0.2%+2 words)
Power (0.2≤ COS φ≤1) ± (reading ×1.0% +2 words)
Capacity of plus or minus (reading) x 10% + 2 words
2.Capacity measurement range: 30KVA ~ 65000KVA
3.Voltage measurement range: AC 50V ~ 850V
4.Current measurement range: AC 0.5A ~ 100A
5.Operating temperature: -10ºC ~ 40ºC
6.Environmental humidity: 10% ~ 85%
7.Storage temperature: -20ºC ~ 50ºC
8.External size: 320mm×270mm×145mm
9.Weight: 5kg(not including test line)