Recently, our company successfully reached a cooperation with a customer and successfully signed and delivered a SXBZ transformer temperature rise test system. This system was tailored and carefully designed by our technical team based on the test items and test requirements proposed by the customer. From solution design to system delivery, we always uphold a professional, efficient and responsible attitude to ensure that every link meets the customer’s expectations and standards.
Equipment Features
1. Test transformer parameters
- Test capacity: 5000kVA and below
- Rated voltage: 35kV/0.69kV
- Test type: oil-immersed power transformer
- Impedance voltage: 7.51%
- Maximum current: <100A
2. High and low voltage current and voltage sampling cabinet
Equipment function: This equipment is used for voltage/current sampling of transformer no-load test and load test.
3. High voltage current transformer
- Standard current ratio: 100A/50A/to 5A
- Measurement accuracy: 0.5 level
4. High voltage voltage transformer
- Input voltage: 3kV
- Output voltage: 100V/400V
- Measurement accuracy: 0.5 level
5. Inductive voltage regulator
- Total capacity: 400kVA
- Input voltage: 380V
- Output voltage: 0-650V
- Control mode: Electric
6. No-excitation test transformer
- Equipment function: used for boosting the temperature rise test voltage.
- Technical parameters Capacity: 400kVA Input voltage:
- Three-phase 0-400V Output voltage:
- 3kV Connection mode: Y/y0; continuous working system, oil-immersed self-cooling
Precautions
Notes on transformer no-load:
- Remember to input the temperature after starting the test, otherwise the wrong temperature during the load test will cause the load calculation value to deviate.
- When converting the load, pay attention to modifying the standard temperature and distinguishing between oil transformers and dry transformers; the input resistance value is unified in ohms, so pay attention to the conversion.
- The test voltage, protection current, etc. are modified after the characteristics or induction closing, otherwise they will be reset.
- Capacitor compensation cannot be taken when the voltage rises to a higher level, which will cause impact.
- Pay attention to modifying the time first during induction tests and power frequency tests to avoid misoperation.
- When entering the temperature view during the temperature rise test, you can only view the current and previous temperature records. The later added ones cannot be displayed and need to be closed and entered again.
We are well aware that customer needs are the driving force that drives us forward. This cooperation is not only a recognition of our technology, but also a trust in our service philosophy. In the future, we will continue to be customer-centric and provide better and more efficient solutions.
