1.Three phase CNC sine inverter power output, with soft start and soft stop functions, therefore has fast testing speed and high accuracy.
2.Three phase transformer, single-phase transformer, PT, CT, Z-type transformer ratio, group, polarity testing function.
3.Three phase testing has the functions of line to line voltage ratio, line to phase voltage ratio, turns ratio, vector diagram, and group connection testing.
4.CT ratio polarity testing function.
5.During single-phase testing, it has the function of angle difference testing.
6.The tap gear can be tested up to 99 gears.
7.The testing range is wide, with a maximum of 20000.
8.High and low voltage reverse connection reminder.
9.Output short circuit reminder.
10.Non power-off clock and date display, The data storage method is local storage, with 100 test data, and the stored data can be transferred to a computer (PC).
11.Thermal printer printing function.
12.Small size, light weight, easy to carry and use.
Product Introduction
Transformer Turns Ratio Tester with Neutral Point is a high-precision, intelligent testing instrument independently developed for the power system's transformer testing needs, engineered by Wuhan Jiuhua Jingce Power Equipment Co.,Ltd. As transformers are the core and critical equipment of the power system, their long-term stable and reliable operation is directly related to the overall safety and stability of power grid operation. In accordance with the preventive testing regulations of the State Grid, turns ratio test in transformer and voltage ratio tests are mandatory for new transformers before commissioning and in-service transformers during regular maintenance-tests that are essential to verify transformer winding integrity, tap changer contact performance, and connection group correctness.
Product Parameter
|
Model |
JH2702TN |
|
range |
0.9~20000 |
|
accuracy |
± (reading × 0.1% + 2 digits) (less than or equal to 1000) |
|
± (reading × 0.2% + 2 digits) (greater than 1000 and less than or equal to 3000) |
|
|
± (reading × 0.3% + 2 digits) (greater than 3000) |
|
|
resolution ratio |
0.9~9.9999(0.0001) |
|
10~99.999(0.001) |
|
|
100~999.99(0.01) |
|
|
1000~9999.9(0.1) |
|
|
20000(1) |
|
|
working power supply |
AC100-240V,50/60Hz (charging voltage for battery-powered models) |
|
instruments weight |
4.7Kg |
|
Instrument volume |
320mm (length) × 280mm (width) × 135mm (height) |
|
end-use temperature |
-10℃~50℃ |
|
relative humidity |
<90%, no condensation |
Product Features
This turns ratio tester is a professional, intelligent instrument designed for power system transformer testing. It integrates advanced technologies and humanized design to deliver efficient, accurate, and reliable performance.As a professional 3 phase ttr tester, it has a complete set of three-phase testing functions, which can fully meet the multi-dimensional testing needs of power system three-phase transformers and other equipment.
Neutral Point Function The addition of a dedicated neutral point testing terminal expands the transformer ttr's application scope, enabling it to directly test transformers with a neutral point (e.g., Yn, YN connection groups). This function eliminates the need for additional wiring or auxiliary equipment, allowing for accurate measurement of line-to-neutral voltage ratio and neutral point-related parameters. It is particularly suitable for testing distribution transformers, grounding transformers, and other equipment with a neutral point, providing comprehensive data support for transformer condition assessment and fault diagnosis, and making the ttr test more comprehensive and accurate for neutral point transformer detection.
Product Accessories
- A yellow portable hard case
- A black carrying bag
- A power cord
- A dedicated grounding test lead
- Three spare fuses
- A USB cable
- Two rolls of printing paper
- Four sets of dedicated test leads (red, yellow, green, black) with large alligator clips
Deliver, Shipping and Serving
FAQ
Q: What exclusive test functions does the three-phase test support for neutral point transformers?
A: It can conduct line-to-phase voltage ratio testing for neutral point transformers (e.g., Yn/YN connection groups) via the dedicated four-color neutral point test terminal without any additional auxiliary wiring.
Q: How to set tap changer parameters to calculate the turns ratio error accurately?
A: In the test parameter setting interface, input the transformer's tap spacing (in percentage) and the total number of tap gears. After the test, the instrument will automatically analyze the actual tap position and calculate the accurate turns ratio error.
Q: The company offers many different Transformer Turns Ratio Tester; what are the advantages of this particular transformer turns ratio tester?
A: This transformer turns ratio tester features an ultra-wide turns ratio measurement range of 0.9～20000 with multi-grade high accuracy (±0.1%~0.3% of reading), which can cover the testing needs of most high-voltage, medium-voltage transformers, PT and CT in the power system. Its three-phase test supports both line-to-line and line-to-phase voltage ratio testing for neutral point transformers (e.g., Yn/YN connection groups) via dedicated terminals, realizing one-stop and comprehensive turns ratio detection without additional auxiliary equipment. Meanwhile, the high-precision ratio matching the wide range ensures accurate data collection for transformers with extreme turns ratio values, and it can automatically analyze the tap position and calculate the ratio error, making it more professional and efficient for large-scale power grid maintenance and high-voltage equipment testing.
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