Transformer Test Equipment

The Portable DC Winding Resistance Tester is an innovative product with a compact design, hand-held operation, and enhanced portability for easy carrying.This instrument is not only suitable for measuring transformers, mutual inductors, reactors, and other inductive test products, but also for testing copper bars, conductors, switch contacts, and other resistive components. The tester offers fast testing speed and high accuracy.

To meet the requirement for rapid DC resistance measurement of transformers, our company has developed a three-channel DC resistance tester specifically designed for YN-connected windings. The tester offers several advanced features, including simultaneous energization of all three phases, independent current and voltage sampling, and the ability to simultaneously measure and display the three-phase resistance values and the three-phase unbalance rate. This significantly reduces the test time required for measuring the DC resistance of transformers and addresses the issue of long test durations for each tapped winding of electric power transformers. The tester requires only one-third of the time compared to traditional methods.

The instrument can simultaneously measure the three-phase winding DC resistances of a transformer. For on-load tap-changing transformers, there is no need for discharging, and the tapping can be adjusted directly using the instrument. The measurement time is reduced to one-third of the time required by traditional single-phase methods, greatly shortening the overall testing time. The entire instrument is controlled by a microcontroller (SCM), which automatically performs functions such as self-checking, data processing, and display. Additionally, the instrument features automatic discharging and an audible discharge alarm. With advantages such as stable test data, high accuracy, fast operation, and excellent repeatability, this instrument is the ideal choice for on-site measurement of transformer DC resistance.

To meet the need for rapid measurement of transformer DC resistance, our company has developed a large-scale power transformer DC resistance tester that integrates Three-Phase simultaneous testing, Magnetic Augment Function, and Degauss Function into a single unit. This tester features simultaneous three-phase power-on, independent current and voltage sampling, and the ability to simultaneously measure and display three-phase resistance and the three-phase unbalance rate. These capabilities significantly reduce the testing time for transformer DC resistance and address the issue of long measurement times typically required for the DC resistance of each tap winding in power transformers.

In power transformers used in the production of semi-finished and finished products, before a new transformer is put into operation, and according to the national ministry’s preventive testing procedures, the transformer’s turn ratio (or voltage ratio) test must be conducted. This test checks the correctness of the transformer’s turn ratio, the condition of the tap changer, whether there is a turn-to-turn short circuit, and whether the transformer is capable of operating in parallel.

The HZBB-10B transformer turns ratio meter intelligent transformer ratio group test, using a new algorithm developed by our company, can measure the three-phase transformer ratio without requiring adjustment of the three-phase power supply balance, ensuring accurate measurements. As a result, the test is fast and can measure the ratio and wiring configuration in approximately 3 seconds.

In the production of power transformers, both semi-finished and finished products undergo testing. Before a new transformer is put into operation, the national preventive testing procedures require a transformer turn ratio or voltage ratio test. This test checks the correctness of the transformer's turn ratio, the condition of the tap changer, the presence of any turn-to-turn short circuits, and whether the transformer can operate properly.

Traditional variable ratio bridge readings are not intuitive, as they require conversion and can only be measured phase by phase. The XXF variable ratio tester overcomes the limitations of traditional variable ratio bridge testing by offering a simple and intuitive operation. It uses a three-phase precision inverter power supply for fast testing with high accuracy.

A Transformer Turns Ratio (TTR) tester is a specialized instrument used to measure the turns ratio of transformers, which is essential for ensuring their proper functionality and reliability. The turns ratio is the relationship between the number of turns in the primary winding and the number of turns in the secondary winding of a transformer. Accurate measurement of this ratio is crucial for assessing transformer performance, diagnosing faults, and ensuring compliance with industry standards.

TTR testers are crucial for measuring the turns ratio of transformers, ensuring their reliability and performance. Huazheng Electric Manufacturing (Baoding) Co., Ltd. has developed advanced TTR testers,which offers precise measurements, user-friendly interfaces, and protective features. The device can perform simultaneous three-phase tests, enhancing efficiency and accuracy. With a focus on quality and innovation, Huazheng Electric is a leading manufacturer in the electrical testing industry, providing essential tools for maintaining reliable electrical infrastructure.

The Transformer On-load Tap-changer Tester is equipped with advanced technology that allows for real-time monitoring and testing of tap-changer operations without interrupting the power supply. This means you can conduct essential maintenance checks while your system remains fully operational, minimizing downtime and enhancing productivity. With its user-friendly interface, the tester simplifies complex testing procedures, making it accessible for both seasoned professionals and those new to transformer maintenance.

The on-load tap-changer is the only moving part connected to the transformer circuit. Therefore, the detection of the on-load tap-changer is becoming more and more important. In the "power equipment transfer and preventive test procedures", asked to check the on-load tap-changer action sequence, measurement switching time. The instrument is mainly used to measure the transformer on-load tap-changer transition waveform, transition time, the instantaneous transition resistance, three-phase synchronization and so on.

The Transformer On-load Tap-changer Tester is equipped with advanced technology that allows for real-time monitoring and testing of tap-changer operations without interrupting the power supply. This means you can conduct essential maintenance checks while your system remains fully operational, minimizing downtime and enhancing productivity. With its user-friendly interface, the tester simplifies complex testing procedures, making it accessible for both seasoned professionals and those new to transformer maintenance.

The on-load tap-changer is the only moving part connected to the transformer circuit. Therefore, the detection of the on-load tap-changer is becoming more and more important. In the "power equipment transfer and preventive test procedures", asked to check the on-load tap-changer action sequence, measurement switching time. The instrument is mainly used to measure the transformer on-load tap-changer transition waveform, transition time, the instantaneous transition resistance, three-phase synchronization and so on.

HZKZ-50A Transformer On-No Load Characteristics Analyzer is the latest product of Huazheng Electric Manufacturing (Baoding) Co., Ltd. The instrument adopts the popular ARM processor in this year, with 168M basic frequency and 128m memory, which can be expanded to 4G memory card. Using 7-inch high-definition color touch panel, combined with emwin display interface so as to make the instrument interface being friendly and operated in a simple way, it can be operated through the touchscreen without keyboard. The instrument support database and can be exported through USB disk or transmitted to computer via data wire.

Transformer Capacity Testing Instrument is specialized in bad power users evading basic electricity secretly adds capacity problems and is a high precision instrument specially used for the measurement of the transformer capacity and parameters. This product uses color LCD monitor, English display, simple and quick menu operation, man-machine interface is friendly. The internal of the instrument has a rechargeable battery and it can work without external power source. A fully charged battery can be continuously measured more than 100 sets. In addition, the instrument can provide three-phase precise 50Hz sine wave AC test power without the external three-phase test power, the pressure regulator, up flow reactor and other auxiliary equipment in measuring the capacity and transformer load loss, thus greatly improving the efficiency of the work.