Overview
With the promulgation and implementation of<GB20052-2020>, low-carbon emission reduction is in full swing in the field of power transformers. The determination and verification of energyefficiency grade of power transformer are gradually carried out in all links.There is an urgent need for a convenient and easy-to-use portable instrument inthe market, which can quickly determine the energy consumption level of powertransformer. This instrument came into being!
This instrument is a multifunctionalmeasuring instrument, which is equivalent to the usual two kinds of testinginstruments: active transformer capacity tester + transformer characteristicparameter tester. It can accurately measure a series of power frequencyparameters such as capacity, energy efficiency grade, no-load loss, no-loadcurrent, load loss, impedance voltage and so on. The indexes are compensatedand corrected to ensure the accuracy of various data.
This product has many advantages, such assmall volume, light weight, high measurement accuracy, good stability, simpleoperation and so on. It can completely replace the previous method of measuringtransformer loss and capacity by using multi meter method. The wiring issimpler, the test and recording are more convenient, and your work efficiencyhas been greatly improved.
FunctionFeatures
l The rated capacity of various oil immersed, dry-type distributiontransformers and power transformers can be measured on site.
l The three-phase inverter scheme of DAC + power operational amplifierautomatically generates three-phase high-power test power supply, and the testdata is more accurate.
l The built-in large capacity lithium polymer battery can test therated capacity of the transformer without additional power supply.
l Support <GB20052-2020>. According to the no-load and loadlosses in the test results, it can be judged that the energy efficiency codesof oil immersed and dry-type transformers include but are not limited to"S20, SBH21, S22, SBH25", "SCBH17, SCB18, SCBH19".
l Combined with external power supply, voltage regulation, boost andcurrent rise and other equipment, it can measure the characteristic data ofno-load current, no-load loss, impedance voltage, load loss and so on.
l All voltage, current, active power and other data are calculated bytrue effective value (t-rms). According to the needs of no-load loss, theaverage effective value (avg-rms) of line voltage is also calculated to ensurethat the test data is accurate and free from power harmonic interference.
l All test results are automatically corrected. You only need to inputrelevant parameters (such as temperature, no-load correction coefficient,etc.), and the instrument can automatically carry out various corrections, suchas waveform distortion correction, temperature correction, non rated voltagecorrection, non rated current correction and so on, so as to improve theaccuracy of test results.
l In the measurement of transformer characteristics, the maximum rangeof voltage can reach 750V, the maximum range of current can reach 100A, andthere is a protection circuit inside. The measurement accuracy can be ensuredwithout changing gears during measurement, and there is no need to worry aboutburning the instrument due to wrong gear selection.
l During the transformer characteristic test, the voltage and currentrange can be expanded flexibly and simply by simply connecting external voltagetransformer and current transformer, which greatly widens the test range of theinstrument.
l 7 inch color screen and high brightness LCD display.
l Support Chinese and English; Friendly man-machine dialogueinterface.
l The instrument has a built-in micro thermal printer, and the testresults can be printed out through the micro printer.
l Test result storage function, which can store 100 groups of capacitytest data.
l The instrument has a real-time clock to ensure that there is anaccurate time stamp when saving and printing the data of each test.
2、Technical Indicators
1. Built in power output range
Voltage: 0 ~ 10V current: 0 ~ 5A
2. Transformer parameter test power inputrange
Voltage: 0 ~ 750V current: 0 ~ 100A
3. Test accuracy
True effective value of voltage and current (T-RMS): ± 0.2% FS;
Average effective value of voltage (AVG-RMS): ± 0.5% FS
Active power: ± 0.5% (COS) Φ> 0.1）, ±1.0%（0.02<Cos Φ< 0.1）
4. Operating temperature
-20℃～+60℃
5. Battery and charger
Charger input AC100V ~ 240V 50 / 60Hz output 12.6v/1a
Built in lithium polymer battery 11.1v * 4000mAh * 2
6. Insulation degree
(1) insulation resistance of capacity test, voltage and currentinput points to the casing ≥ 100mΩ
(2) power frequency 2KV (effective value) is borne between thecharging power input and the casing, and the test time is 1 minute
7. Weight volume
Device: 33cm × 28cm × 14cm 3.7kg
Test line box: 34cm × 27cm × 15cm 6.9kg