Transformer Turn Ratio Tester
Product Introduction
Transformer Turns Ratio Tester is specially designed for three-phase transformer in power system, especially for transformer of type Z winding and other transformers whose zero-load current is relatively high. The tester has wide testing range, fast testing speed, favorable repeatability, flexible data processing, convenient connection, complete protection, easy learningand convenient operation.
พารามิเตอร์ทางเทคนิค
| ช่วงการทดสอบอัตราส่วนการเปลี่ยนแปลง | 0.8～10000 |
| ช่วงการทดสอบกลุ่ม | 0～11 |
| Ransformation ratio testing accuracy | class 0.1 (HV:0.8～200) |
| class 0.2 (HV:200～1000) | |
| class 0.5 (HV:1000～10000) | |
| class 0.2 (LV:0.8～100) | |
| ความละเอียดอัตราส่วนการเปลี่ยนแปลง | 0.0001 |
| กำลังไฟเข้า | 220V ± 10%, 50HZ ± 1Hz |
| อุณหภูมิการให้บริการ | -20℃~40℃ |
| ความชื้นสัมพัทธ์ | ≤85% ไม่มีการควบแน่น |
| ขนาดโดยรวมของเครื่องโฮสต์ | 325mm×280mm×190mm |
| น้ำหนักของเครื่องโฮสต์ | 6.9กก |
Product Characteristics
2、Offers two output voltage options, ideal for transformers with high zero-sequence current.
3、Wide measurement range with a maximum transformation ratio of up to 10,000.
4、Automatic tap position calculation.
5、Fast operation: completes three-phase measurement in just 18 seconds.
7、Can automatically store up to 99 sets of test data.
8、Flexible data handling: supports retrieval, printing, export to USB drive, deletion, and upload to PC.
9、Includes transformer short-circuit protection and inter-turn short-circuit protection; fault information is displayed on the LCD screen in case of a short circuit.
10、Compatible with PC software for full-process testing control and data management.
11、Comes with a detailed operation manual for user convenience.
12、Compact design, slightly larger than an A4 sheet of paper.
13、Lightweight, weighing only 6.9 kg.
Advantage
Fully automatic testing: simply connect the wires, and the instrument can automatically perform ratio testing for low, medium, and high gears, and automatically determine polarity.
High precision measurement: Advanced measurement technology is adopted to ensure extremely high measurement accuracy. The equipment of Wuhan UHV Power Technology Co., Ltd. is particularly outstanding in this regard, and its intelligent transformer turns ratio tester enjoys a good reputation in the industry.
Easy to operate: With a fully English interface and clear operation logic, even engineers who are new to it can quickly get started.
Data management: Test results can be directly stored and exported, facilitating subsequent data analysis and archive management.
Application Fields
1. Power system
Transformer testing: In the power system, the transformer ratio tester is an important tool for transformer maintenance and repair. It is used to measure key parameters such as transformer ratio and wiring group, ensuring the normal operation of transformers and avoiding power accidents caused by incorrect transformer ratio.
Equipment debugging: In new substations or transformer replacement projects, testers are used for debugging and testing new equipment to ensure that the equipment meets design requirements and operates safely and stably.
2. Transformer manufacturing
Quality control: During the manufacturing process of transformers, testers are used to test parameters such as transformer ratio, wiring method, no-load current, and short-circuit impedance to ensure that product quality meets standards.
3. Power plants and substations
Comprehensive testing: In power plants and substations, transformer ratio testers are used to conduct comprehensive testing of transformers, including measurement of parameters such as voltage, current, power, frequency, as well as testing items such as no-load, load, and induced potential. This helps to detect problems with transformers in a timely manner and carry out effective maintenance and repair.
4. Railway system
Electrification equipment testing: In the railway system, special transformer ratio testers are widely used to test railway electrification equipment, such as traction transformers, to ensure the normal operation of the equipment and avoid safety accidents caused by incorrect ratio.
5. Petrochemical industry
Equipment testing: Transformer ratio testers have also been widely used in the petrochemical industry to test key equipment such as transformers, ensuring the safety and stability of the equipment.
6. New energy industry
New energy equipment testing: In the new energy industry, such as wind power generation, solar power generation and other fields, special transformer ratio testers are used to test new energy equipment to ensure stable operation in complex environments.
7. Preventive maintenance and risk management
Preventive maintenance: By regularly using transformer ratio testers for testing, potential equipment problems can be detected in a timely manner, and maintenance can be carried out in advance to avoid sudden failures affecting production efficiency and safety.
Risk management: The accurate data provided by the tester helps to reduce the risks caused by equipment failures and improve overall safety.
Frequently Asked Questions (FAQ)
Q: What exactly does "turns ratio" refer to in a transformer turns ratio tester?
A: The turns ratio refers to the ratio of the voltage (or current) on the primary side winding to the voltage (or current) on the secondary side winding of the transformer.
Q: What issues should be paid attention to when measuring the transformer turns ratio?
A: Attention should be paid to temperature, wiring methods, stability of the test power supply, and standardized operation by personnel.
Q: What types of turns ratio testing instruments are available on the market?
A: Common types include automatic turns ratio and vector group testers, single‑phase transformer turns ratio testers, and three‑phase transformer turns ratio testers, among others.
Q: What impact will an inaccurate transformer turns ratio have on the power grid?
A: An inaccurate turns ratio may reduce power transmission efficiency and may even cause serious problems such as equipment overload and damage.
Q: How can the accuracy of transformer turns ratio measurement be improved?
A: Choose a high‑precision automatic tester, strictly follow the operating procedures during measurement, and pay attention to control of environmental factors.
