Portable Transformer Turns Ratio Tester TTR Analyzer with Touch Screen & Built‑in Printer

Product Description

In the power transformer semi-finished products, finished products in the production process, the new installation of the transformer into operation before and according to the national power ministry of the preventive test procedures, the requirements of the operation of the transformer turns ratio or voltage ratio test, you can check the correctness of the transformer turns ratio, tap changer condition, whether the transformer is short-circuited between the turns, whether the transformer can be operated in parallel. The traditional ratio bridge reading is not intuitive, to convert, can only be measured phase by phase.HZBB-VII transformer ratio tester overcomes the weakpoints of the traditional ratio bridge test, easy and intuitive to operate, the use of three-phase precision inverter power supply, fast testing, high accuracy.

Product Alias

Transformer Turns Ratio Tester / Transformer Ratio Tester / TTR Tester / Transformer Turns Ratio & Vector Group Tester / Digital Transformer Ratio Test Set / Transformer TTR Analyzer / Power Transformer Turns Ratio Measuring Instrument

Features

1. The instrument internal use of three-phase precision inverter power supply, eliminating the harmonic effects of the utility voltage during measurement, more accurate measurement. When the working power supply is generator, there is no influence.

2. The use of three-phase output voltage, improve the speed of testing, can measure the angle between phases, automatic identification of wiring group 0-11, for low-voltage measurement of multiple windings rectifier transformer, low-voltage side without removing the line, you can measure the ratio and 7.5 ° angular deviation.

3. Applicable to a wide range of transformers, especially for Z-type transformers, rectifier transformers, grounded transformers, furnace transformers, phase-shifting transformers and other transformer measurement.

4. With high and low voltage reverse connection protection, transformer turn-to-turn short circuit protection, tap changer tap-close not in place protection, the output of the full short-circuit protection, increase the stability of the instrument.

5.After inputting the rated parameters, it can automatically measure the transformer ratio value, error value and tap changer tap position, especially for tap asymmetric tap changer, it can also accurately measure the exact position of the transformer tap changer, and it can measure the tap changer of 99 tap positions at most.

6. Seven-inch high-brightness touch-colour LCD, clear display under bright light, full touch-screen operation, free switching between English and Chinese.

7. The instrument has both printout, U disk interface, can also be equipped with RS232 interface, easy to paperless office.
8, the use of cold and temperature, sealed waterproof, drop-proof shockproof multifunctional engineering plastic box, easy to field test.

9. The instrument can use android mobile phone or tablet, pay attention to wechat public number, download the special APP, through the special software to control the instrument, test data storage and uploading, easy to access.

Product Parameters

Application Scenarios

FAQ

Question 1: What functions can this portable transformer turns ratio tester complete on‑site?
Manufacturer: This tester can automatically measure turns ratio, voltage ratio, check winding polarity and identify vector group of power transformers. It supports testing for transformers with off‑circuit tap‑changer, and can read data of each tap position continuously. Equipped with built‑in thermal printer, it can print complete test reports directly at site. Meanwhile, it supports mass test‑data storage, historical record query and USB data export. It is widely applied for transformer factory outgoing inspection, substation acceptance test and daily maintenance work.
Question 2: Why do measured ratio data have large deviation compared with transformer nameplate value?
Manufacturer: Large deviation is mostly caused by external field factors. Firstly, check whether test cables are connected to correct winding terminals, confirm all terminals are tightly connected without loose contact, oxidation or dirt. Secondly, verify tap position setting on instrument is fully consistent with actual tap of transformer. Thirdly, confirm vector group parameter is correctly selected according to nameplate. In addition, residual magnetism inside transformer core will also interfere measuring accuracy, please perform demagnetization before testing. If above steps cannot solve the problem, please contact technical support, do not disassemble the device by yourself.
Question 3: Can this tester test three‑phase power transformers? What types of transformers are not suitable?
Manufacturer: Yes, it is fully compatible with three‑phase power transformers, it can finish automatic three‑phase sequence measurement and vector‑group judgment. It is applicable for oil‑immersed transformers, dry‑type distribution transformers and most ordinary power transformers. It is not suitable for transformers under live‑working condition. Do not conduct testing when transformer is energized. Special transformers such as special rectifier transformers need to confirm parameter matching before test operation.
Question 4: How to handle if vector group test result is inconsistent with transformer nameplate?
Manufacturer: When vector group result does not match nameplate, please check items step by step. First, double‑check wiring sequence of high‑voltage side and low‑voltage side, wrong wiring will directly lead to wrong vector‑group output. Second, confirm whether low‑voltage neutral point has reliable grounding for Y‑connection transformers; floating neutral‑point potential will cause group‑judge error. Third, check whether transformer has been reconstructed or modified in past operation, nameplate information may not be updated. After eliminating above external causes, run instrument self‑check procedure. If problem still exists, please send feedback to manufacturer.
Question 5: What are the requirements for daily maintenance and calibration cycle of this TTR tester?
Manufacturer: After field operation, clean test cables and protective case, avoid heavy extrusion, damp and rain erosion. Keep instrument stored in dry and ventilated environment. For calibration cycle, we suggest performing professional laboratory calibration once per year. If the device works in heavy‑duty substation field frequently, shorten calibration cycle to every 6 months. Before each important on‑site test, run simple self‑check to confirm instrument, cables and connectors are in good condition, so as to guarantee measuring reliability.
Question 6: If we place an order, how do you typically ship the goods? Will there be any issues with transporting bulky items such as reactors?
Manufacturer: We default to using dedicated logistics lines or brand-specific express shipping services; small-sized main units and accessories may also be shipped via standard courier services. Large items, such as reactors and excitation transformers, are packed using wooden crates or wooden frames for reinforcement to prevent bumps and moisture exposure during transit; a packing list is included with each package to facilitate item-by-item counting for you. Logistics costs are typically determined by both parties in accordance with the contract terms; after shipment, we will send you both the tracking number and the carrier's contact phone number for easy tracking.If your project site is remote or if delivery to the site is required with a specified logistics company, please inform us in advance when placing your order; we can then coordinate and arrange accordingly.
Question 7: Our project is under tight deadlines; how long will it take for the order to be shipped after we place it? Can we request expedited shipping?
Manufacturer: Standard specifications – stock available; typically delivered upon receipt of the order. Orders can be shipped within [X] working days; for non-standard products requiring customized voltage levels, capacities, or reactor combination configurations, the production cycle typically ranges from [X] to [Y] days.The delivery time will be approximately 7-15 working days; the specific timeline shall be subject to the sales confirmation provided upon order placement. If your project has a tight schedule, please inform us of the latest expected delivery date before placing your order; we will first verify the production schedule and inventory status, and where possible, will coordinate expedited production and prioritize shipment. However, it is recommended to allocate sufficient transit time for logistics to avoid delaying on-site testing.
Question 8: What is the warranty period for this equipment? If any issues arise during on-site use, how will your after-sales service respond?
Manufacturer: We provide a two-year free warranty on the entire unit and lifelong technical support services. During the warranty period, if issues arise due to defects in the equipment itself, we will provide free repair or replacement of components; when problems occur on-site, we commit to responding within 24 hours; most wiring and parameter configuration issues can be resolved through remote guidance via video or telephone; for cases where an on-site visit is necessary, we will arrange for our technicians to arrive at the location to resolve the issue. After the warranty period expires, we still offer repair services, with spare parts supplied at cost price for the long term, and software updates provided free of charge for life. Upon delivery of the equipment, we also offer free operational training (video operation guides)to ensure that your testing personnel can operate the equipment independently and proficiently; should you have any further questions, please feel free to contact our dedicated after-sales hotline directly.
Question 9: Our projects are distributed across several states, and our procurement volumes are substantial; are the shipping methods consistent across all states? How is the delivery time calculated?
Manufacturer: The specifications are identical; however, it should be specifically noted that this equipment set is large in size and heavy in weight—components such as the reactor and excitation transformer are all classified as heavy components. Therefore, regardless of which state or region the shipment is destined for, we will uniformly utilize sea freight transportation. The packaging employs export-grade wooden crates with reinforced structures, along with moisture-proof and rust-proof treatments; the design of these wooden crates is optimized for long-distance sea transport and multiple lifting and transshipment operations. Upon arrival at the destination, simply unpack the goods and conduct an inspection before putting them into use. Regarding delivery time, the sea freight transit period depends on the port of destination: near-sea routes are generally faster, whereas ocean routes may take longer; the exact number of days will be confirmed based on the shipping schedule specified in the bill of lading. We have a dedicated freight forwarding agency to handle booking of shipping space, customs declaration, insurance, and other related procedures; once the vessel departs, we will send you documents such as the bill of lading and the packing list, enabling you to arrange for the receipt of goods at the port of destination and their inland transshipment in advance

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