NDBC-VI Transformer Turns Ratio and Vector Group Tester

Product Introduction

       According to IEC and relevant national standards, transformer ratio testing is a mandatory procedure during the production, user handover, and maintenance testing of power transformers. This effectively monitors the quality of transformer products both upon delivery and during use, preventing issues such as inter-turn short circuits, open circuits, incorrect connections, internal faults in tap changers, or contact failures.   

       To meet these requirements, our company has developed and produced a tester that, based on user feedback and field application needs, offers simpler operation, comprehensive functionality, stable and reliable data, and significantly improved testing speed. It is suitable for the ratio testing needs of various large, medium, and small transformers.

Product Features

☆ Chinese menu prompts, simple and convenient operation.
☆ Wide ratio measurement range: 1-10000.
☆ Powerful functionality: capable of single-phase measurements and automatic testing of three-phase windings, with any selectable connection group. Completes measurements for AB, BC, and CA three-phase ratio values, errors, connection groups, and other parameters in one go.
☆ Fast measurement speed. (Three-phase testing completed in just over ten seconds).
☆ Automatic shutdown of test power supply after one measurement.
☆ Data settings and measurement results are automatically saved, allowing review of previous data.
☆ For on-load transformers, only one ratio input is required.
☆ Portable and suitable for field operations.

Technical Parameters

☆ Ratio measurement range: 1-10000.
☆ Accuracy: 1-1000  0.2%±2 digits    1000-10000  0.5%±2 digits.
☆ Power supply: 220V±10%, 50HZ.
☆ Group: 1-12.
☆ Operating temperature: 0-40℃.
☆ Environmental humidity: Less than 80% non-condensing.
☆ Dimensions: 400×290×170MM³