1、 Product Overview:
According to IEC and relevant national standards, transformer ratio testing is a necessary item in the production, user handover, and maintenance testing of power transformers. This can effectively supervise the quality of transformer products during factory delivery and use, prevent inter turn short circuit, open circuit connection errors, and internal faults or contact faults of voltage regulating switches. For this purpose, our company has developed and produced a fully automatic variable ratio tester that, based on the original requirements of users' on-site use, makes operation more convenient, has complete functions, stable and reliable data, and greatly improves testing speed. Adapt to the needs of ratio testing for various large, medium, and small transformers.
Product nickname: Ratio Tester, Ratio Group Tester, Transformer Ratio Tester, Transformer Ratio Fully Automatic Tester, Fully Automatic Transformer Ratio Tester, Transformer Ratio Group Measuring Instrument, Transformer Ratio Measuring Instrument, Transformer Ratio Fully Automatic Measuring Instrument.
2、 Product Features:
1. Menu prompts and simple and convenient operation.
2. Large measurement range of variable ratio: 1-10000
3. Powerful function: It can perform single-phase measurement and automatic testing of three-phase windings. The connection group can be arbitrarily selected to complete the measurement of AB, BC, CA three-phase transformation ratio, error, connection group and other parameters at once.
4. Fast measurement speed. (Three phase simultaneous measurement only takes a few seconds)
5. Complete one measurement and automatically cut off the test power supply.
6. Setting up automatic saving of data measurement results allows for viewing of previous data.
7. Measure the on load transformer by inputting the transformation ratio only once.
8. Convenient to carry and suitable for field operations.
1. Variable ratio measurement range: 1-9999.9.
2. Accuracy: 1-999.99 0.2% ± 3 words
1000-999.9 0.5% ± 3 words.
3. Power supply: 220V ± 10% 50Hz.
4. Group: 1-12
5. Working temperature: 0-40 ℃.
6. Environmental humidity: less than 80% without condensation.






The enterprise's products are strictly produced in accordance with international and national standards and industry regulations, and have passed the testing of national, provincial, and municipal power research institutes, measurement centers, and authoritative power departments. They have fully passed the ISO9001 international quality management system certification, the People's Republic of China Manufacturing Measuring Instrument License, GB/T19001-2008 quality management system requirements.
We will strictly follow the "Quality and After sales Service Commitment Letter" to provide relevant product services. We firmly believe that high-quality, systematic, comprehensive, and fast services are the foundation of enterprise development. After years of continuous exploration and progress, we have formed the service philosophy of 'customer centricity, quality as the first life of the enterprise'. And with the goal of creating a first-class service enterprise in China through strict quality management and advanced technology, we have formulated a quality policy of 'standardized management system, strict process control to ensure product quality and customer satisfaction'. For many years, we have adhered to the principle of 'customer first' and built a good sales and after-sales service system to provide customers with better pre-sales, in sales, and after-sales services!
Our after-sales service commitment is: 'Refund within 3 months, replacement within 1 year, free repair for 3 years, and lifelong maintenance'. In the days to come, we will continue to adhere to the three-star service as always!
Note: The detailed product information is subject to the actual product. Please confirm the specific model parameters with the sales personnel before purchasing. Please refer to the instruction manual.
The final interpretation of this service commitment belongs to Wuhan Hezhong Electrical Equipment Manufacturing Co., Ltd.
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