Transformer Winding Resistance Analyzer

Transformer Winding Resistance Analyzer

Product Description

MY-3110 DC Winding Resistance Tester is designed to measure DC resistance of inductive devices, such as transformers and power inductors. It has features of fast measurement, small size, light weight, large output current, perfect protection functions, good repeat-ability, good anti-interference ability, high accuracy, which make it an ideal equipment for measuring DC resistance of transformer winding and high inductive equipment.
Product Alias

Transformer DC Winding Resistance Tester / 10A Transformer Winding Resistance Meter / Transformer Coil DC Resistance Analyzer / Portable DC Resistance Test Instrument
Features

Product Parameters

Application Scenarios

FAQ

Question 1: Abnormal reading / Unstable resistance measurement value
Customer: When measuring the winding DC resistance of the transformer, the displayed resistance value keeps fluctuating and cannot get a stable reading after waiting for a long time. What are the possible reasons?
Manufacturer: First check whether the test clips are tightly clamped on the transformer winding terminals, remove surface oxide layer, paint and dirt on the contact points to ensure good metal contact. Confirm the transformer has been fully power-off and discharged completely, residual electromotive force will interfere with the measurement result. Check if the test cables have internal breakage or poor contact. Restart the instrument and re-connect the test leads. If the reading is still unstable, stop the test and contact technical support. Do not disassemble the instrument by yourself.
Question 2: Instrument fails to start / Cannot power on
Customer: After pressing the power button, the transformer winding resistance analyzer does not light up and cannot start the machine. How to troubleshoot?
Manufacturer: Check whether the battery power is exhausted. If using the rechargeable version, connect the matching power adapter to charge the instrument for 30 minutes then try to boot again. Inspect the power adapter and charging cable for damage or loose plug connection. Check the power switch and charging port for dust and corrosion. If charging still cannot activate the device, stop operation and contact technical support. Do not open the instrument shell for inspection.
Question 3: Test prompt overcurrent / Overcurrent alarm appears during measurement
Customer: The instrument triggers overcurrent alarm immediately after starting the winding resistance test, and the test cannot continue. What leads to this problem?
Manufacturer: Immediately cut off the test output and stop the test. Check whether the test wires are short-circuited to each other. Confirm the transformer winding has no internal short-circuit fault. Verify the test range and output current setting match the transformer specification; using excessive test current for small-capacity transformers will trigger overcurrent protection. Check whether the test clips accidentally touch the ground or other metal parts. Recheck wiring and restart the test. If the alarm repeats, contact technical support. Do not modify the internal protection circuit.
Question 4: Data cannot be saved / Saved test data missing
Customer: After completing the transformer winding resistance test, I cannot save the measured data, or the saved data disappears after restarting the instrument. What should I do?
Manufacturer: Confirm there is enough storage space inside the instrument. Check whether the data storage function is enabled in the system menu. If saving to external USB flash drive, verify the USB disk format is compatible and the USB interface is well-connected. Avoid cutting off power suddenly during data saving operation. If the built-in storage fails, back up data timely via USB export. If the fault still exists, contact technical support. Do not format the storage disk without guidance.
Question 5: Big deviation between measured value and factory standard value
Customer: The measured winding resistance value is obviously different from the transformer factory test report, and the error exceeds the allowable range. What causes this large deviation?
Manufacturer: Confirm the transformer winding temperature has stabilized, DC resistance is greatly affected by temperature, and temperature conversion calculation is required. Check the connection sequence of test terminals, wrong wiring will produce wrong measurement results. Make sure all winding taps are placed at the correct tap position during testing. Eliminate the influence of residual magnetism of the transformer. Reconnect the test leads and perform repeated measurement. If the deviation still exists, stop testing and contact technical support. Do not modify the instrument calibration parameters without authorization.
Question 6: Shipping Method
Customer: 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: Delivery Lead Time
Customer: 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: After-sales Service and Warranty
Customer: 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: Shipping methods for each region (Sea freight)
Customer: 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.
scenario
Scene (One)

Scene (Two)

Attachment Directory

Attachment Image