On-load Tap Changer Tester (OLTC Tester)

The MOEORW-WBK85 on-load tap changer tester employs a three-channel synchronous AC method , specifically designed to detect the smoothness, bounce, and breakage of the on-load tap changer's transition process. Compared to the traditional DC method, it provides more realistic and intuitive waveforms, more accurate fault diagnosis, and is easy to operate, making it an ideal device for on-load tap changer testing.

1. Employing our company's proprietary three-channel synchronous AC measurement method, the differences in the three-phase waveforms are readily apparent.
2. It incorporates our company's proprietary low-distortion intelligent voltage and current regulated AC power supply, effectively reducing the size and weight of the instrument.
3. The waveform is simple and clear, making fault diagnosis easy and accurate. Even slight switch vibrations are clearly reflected in the waveform.
4. It can accurately capture the switching action of on-load switch, record in detail and reproduce the on-load switch transition process realistically.
5. The AC test has a high sampling speed and a large data storage capacity, and can record the transition waveform of the three-phase switch 40ms before and 200ms after the action.
6. It can be used for testing various single-phase and three-phase on-load tap changers, with and without windings.
7. It features a 7-inch color touchscreen LCD with all Chinese character menus and operation prompts, and the wiring operation is simple and convenient.
8. Built-in large-capacity memory can store 150 measurement waveforms, and historical data can be viewed at any time.
9. Test data can be exported to a USB flash drive for analysis and recording on a computer.
10. It has an RS232 interface, which can be connected to a computer for testing, storage, printing, querying, and data analysis.

• The transformer undergoes factory testing to verify the performance of the newly installed on-load tap changer, ensuring smooth and trouble-free switching.
• Before and after operation and maintenance of substations , and during regular inspections, quickly identify potential hazards such as switch bounce and breakage.
• Power testing institutions specialize in testing and waveform analysis, and issue test reports on switching transition characteristics.
• Routine maintenance of on-load tap changers of main transformers in self-owned power stations of industrial and mining enterprises is essential to ensure continuous and stable power supply.
• Functional verification after transformer repair/overhaul confirms that the switching process is normal and reliable.