
▍ brief ↴
YLTX-7073Transformer capacity characteristic tester, is a newly developed instrument by Shaanxi Yilian Electric for measuring the capacity of distribution power transformers, measuring the no-load loss and load loss of transformers, specifically designed to meet the actual needs of users. It is a transformer capacity characteristic testerEquipped with harmonic analysis function, it facilitates the analysis of on-site power grid quality.

▍ Functional Features ↴
▶ Capacity measurement: The transformer capacity characteristic tester is equipped with a rechargeable lithium battery and can output a three-phase sine wave inverter power supply. The output voltage is automatically adjusted and has soft start and soft stop functions. It can measure the capacity and determine the model of the distribution transformer without the need for any external power supply.
▶ Measurement of load loss: displays three-phase voltage, three-phase current, and three-phase power, automatically calculates the impedance voltage percentage of the transformer, converts it to the load loss at rated temperature and rated current, automatically determines the iron core model of oil immersed or dry-type distribution transformers, and has an alarm adaptive prompt function during the testing process, which is convenient for on-site users to use.
▶ Measurement of no-load loss: displays three-phase voltage, three-phase current, three-phase power, displays the distortion rate of the applied power waveform, automatically calculates the no-load loss of the transformer converted to rated voltage and corrected for waveform distortion, and displays the model of the iron core of the oil immersed or dry-type distribution transformer.
▶ Single phase measurement: can be used to check for defects in single-phase transformers or for situations where there is no three-phase electricity on site. The transformer capacity characteristic tester can record data from three single-phase measurements and calculate the no-load current, no-load loss, impedance voltage, and load loss of the transformer based on different connection methods.
▶ Measurement of zero sequence impedance: The measurement of zero sequence impedance is suitable for transformers with neutral points in star shaped connections on the high voltage side. The instrument can record zero sequence impedance, zero sequence reactance, zero sequence inductance, impedance angle, and zero sequence resistance.
▶ The transformer capacity characteristic tester has harmonic analysis function, which can measure the content and total distortion rate of multiple harmonics, and has original waveform and bar chart display.
▶ Adopting a large screen LCD display, it can display relevant data such as three-phase voltage, three-phase current, three-phase power, three-phase average voltage, average current, and three-phase total power on the same screen; Full interface Chinese menu prompts, easy to operate.
▶ Dual use AC/DC power supply, lithium battery power supply or 220V AC charger power supply adaptive; Intelligent charging management, remaining battery display, low battery alarm, automatic backlight adjustment, saving power.
▶ The human-computer interaction interface is more user-friendly, and the status bar at the top of the screen displays the real-time insertion status of the USB flash drive. When operating unconnected devices, corresponding unconnected prompt information is displayed.
▶ The data storage methods are divided into local storage and USB storage. Local storage can store 200 pieces of test data, and local storage can be converted to USB storage; The data format stored on the USB flash drive is Word format, which can be directly edited and printed on the computer.
▶ Clock and date display without power failure.
▶ Thermal printer printing function, fast and silent.
▶ Small size, light weight, convenient to carry and use.
▍ Technical Parameter ↴
▶ Basic measurement accuracy: Voltage, current: ± (reading x 0.2%+2 words)
Power (0.2 ≤ cos π≤ 1): ± (reading × 1.0%+2 words)
Capacity: ± (reading x 10%+2 words)
▶ Capacity measurement range: 30kVA to 65000kVA
▶ Voltage measurement range: AC 50V~850V
▶ Current measurement range: AC 0.5A~100A
▶ Working temperature: -10 ℃~50 ℃
▶ Environmental humidity: ≤ 90%, no condensation
▶ Dimensions: 320mm × 270mm × 145mm
▶ Weight: 5kg
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