1.The three-phase CNC sinusoidal inverter power supply features soft start and soft stop functions, ensuring rapid testing speed and high precision.
2.Testing functions for three-phase transformers, single-phase transformers, PTs, CTs, and Z-type transformers, including ratio, group, and polarity.
3.The three-phase test features line-to-line voltage ratio, line-to-phase voltage ratio, turns ratio, vector diagram, and group connection testing functions.
4.CT ratio polarity test function.
5.It has angular difference testing function in single-phase test.
6.The tap position can be tested up to 99 positions.
7.The measurement range is wide, with a maximum of 2000.
8.High/Low Voltage Reversal Alert.
9.Output short-circuit alert.
10.The clock and date display remain operational without power loss; data is stored locally with 100 test records, and the stored data can be transferred to a PC.
11.Thermal printer printing function.
12.Compact and lightweight, making it easy to carry and use.
Product Introduction
Breaking the limitations of traditional ratio bridge testers, which feature cumbersome operation, unintuitive reading, single-phase-only testing, and the need for manual data conversion, the handheld transformer ttr optimizes testing efficiency and accuracy with a series of advanced designs and functions. Equipped with a 7.0-inch high-resolution 800×480 TFT color touchscreen LCD, the instrument features a humanized Chinese menu prompt system, enabling intuitive and easy operation even for on-site testing personnel. Its one-time wiring design supports one-click completion of three-phase ratio testing, drastically reducing on-site wiring workload and shortening transformer power outage maintenance time.Powered by a three-phase CNC sine inverter power supply with soft start and soft stop functions, the handheld ttr ensures fast testing speed and high measurement accuracy, with a wide test range of 0.9～2000 and multi-level accuracy standards to meet the testing requirements of different types of transformers. It has a comprehensive testing capability, supporting ratio, group and polarity tests for three-phase transformers, single-phase transformers, PT, CT and Z-type transformers; the three-phase testing function covers line to line voltage ratio, line to phase voltage ratio, turns ratio, vector diagram and group connection testing, and the single-phase testing is equipped with an angle difference testing function, with the tap changer test supporting up to 99 gears-fully meeting the diverse testing needs of transformer ttr test in power system and providing accurate data support for all kinds of transformer and mutual inductor detection. The high integration of functions and portable design make the ttr transformer test more efficient and convenient in on-site application scenarios.
Product Parameter
|
Model |
JH2711TN |
|
range |
0.9~2000 |
|
accuracy |
± (reading × 0.1% + 2 digits) (less than or equal to 200) |
|
± (reading × 0.2% + 2 digits) (greater than 200 and less than or equal to 500) |
|
|
± (reading × 0.3% + 2 digits) (greater than 500) |
|
|
resolution ratio |
0.9~9.9999(0.0001) |
|
10~99.999(0.001) |
|
|
100~999.99(0.01) |
|
|
1000~1999.9(0.1) |
|
|
working power supply |
Lithium battery power supply, battery capacity 5.2AH |
|
instruments weight |
The entire set weighs 8.4 kg (including the main unit, which weighs 2.2 kg). |
|
Instrument volume |
280mm (length) × 180mm (width) × 80mm (height) |
|
end-use temperature |
-10℃~50℃ |
|
relative humidity |
<90%, no condensation |
Product Application Scenarios
Power System Preventive Testing
Power supply bureaus conduct regular ratio and polarity tests on in-service neutral-point distribution transformers, grounding transformers, PT/CT to identify potential equipment faults.
Power Engineering Acceptance
Parameter verification of new transformers and mutual inductors before grid connection in new/renovated projects to ensure qualified installation and performance.
Equipment Manufacturing/Repair Testing
Transformer manufacturers and maintenance enterprises conduct ex-factory tests for semi-finished/finished products and performance re-inspection for repaired faulty equipment.
On-site Emergency Repair
Quickly locate fault causes at outdoor poles, box transformers, and distribution rooms during transformer sudden failures, reducing power outage time.
Industrial and Mining Enterprise Operation
Steel, chemical, mining and other enterprises independently carry out daily operation and fault detection of internal transformers and mutual inductors.
Special Transformer Testing
Test line-to-phase voltage ratio and exclusive neutral-point parameters for Z-type grounding transformers and special neutral-point transformers.
Product Accessories
- A silver aluminum alloy portable hard case
- A power adapter with power cord
- A USB data 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 are the portability advantages of this handheld tester, and how does it adapt to on-site testing?
A: The main unit of the tester only weighs 2.2kg, and the whole set is 8.4kg with a compact volume of 280mm×180mm×80mm, which is easy to carry and operate in narrow on-site environments such as distribution rooms and box transformers. It is powered by a 5.2AH lithium battery, without the need for on-site AC power supply, and is suitable for mobile testing in various outdoor and field scenarios.
Q: What is the operation convenience of the tester, and is it suitable for on-site operators to use quickly?
A: The tester is equipped with a 7.0-inch high-resolution 800×480 TFT color touchscreen LCD and a humanized Chinese menu prompt system. It adopts a one-time wiring design, which can complete three-phase ratio testing with one click. No complicated manual data conversion is needed, and the test results are intuitive and clear. Even on-site operators who are not familiar with the instrument can master the operation quickly.
Q: Why choose our company's handheld turns ratio tester compared with similar products on the market?
A: Our company has been focusing on the R & D and production of power testing equipment for many years, with mature core technology and rich on-site application experience. This handheld tester is independently developed and optimized for the pain points of on-site transformer testing, such as cumbersome operation and poor portability of similar products. It integrates high precision, portability, comprehensive functions and intelligent protection, and is matched with perfect after-sales service. At the same time, the product has strict quality control in the production process, which can ensure the long-term stable and reliable operation in the on-site testing work.
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