Transformer Turns Ratio Tester

A: Usually we quote within 24 hours after we get your inquiry.

A: Our minimum order quantity is 1 set, and the sample shipping fee needs to be provided by you.

A: Most Of our tester has stock.You can contact us to make sure

A: Our products undergo factory testing and are accompanied by reports.

A: Yes we could offer different discount according to your order quantity. We also hold regular promotional activities every year.

A: We have more than 10 years of export experience. Please contact us to confirm if there is a local partner.

A: Usually we take door to door express delivery ,cause it's more convenient and fast.

A: A transformer turns ratio tester, often referred to as a TTR tester, is an essential tool used to measure the turns ratio between the windings of a transformer. It helps ensure the transformer is operating efficiently and identifies issues such as winding defects, incorrect tap positions, and faulty tap changer operations. Accurate testing with a transformer ratiometer is critical for maintaining the reliability of the transformer.

A: A phase transformer turns ratio tester works by applying a known voltage to the primary winding and measuring the resulting voltage on the secondary winding. It calculates the turns ratio by dividing the primary voltage by the secondary voltage, which helps in verifying the voltage ratio and ensuring the transformer’s accuracy and efficiency.

A: Key features of a TTR tester include the ability to test various transformer types, including single-phase and three-phase transformers, automatic vector group detection, tap changer position testing, and compatibility with different transformer configurations like phase shifting transformers.

A: Regular testing is essential during commissioning, routine maintenance, and after any event suspected to impact transformer integrity (e.g., faults, lightning strikes, or mechanical damage). Maintenance intervals vary but are typically recommended annually or semi-annually.

A: Warm-Up Period: Allow the TTR tester to warm up for the manufacturer-recommended duration, typically 15-30 minutes.
Connection Setup: Connect the TTR tester to the reference transformer using appropriately rated cables.
Apply Test Voltage: Set the TTR tester to the required test voltage, typically between 8-100 V depending on the transformer type.
Measurement Verification: Perform a test measurement and compare the tester’s output with the certified ratio of the reference transformer.
Adjustment (If Necessary): If deviations exceed the acceptable range, use the calibration controls (hardware or software) on the TTR tester to fine-tune the device until its readings match the reference transformer’s values within the specified accuracy range.
Final Verification: Repeat the test multiple times under identical conditions to verify the repeatability of results.

A: TTR testers ensure accuracy by providing precise measurements of the turns ratio, phase angle, and vector group detection. They help in identifying discrepancies between the actual and expected voltage ratios, allowing for timely maintenance and correction of issues such as tap misalignment or winding faults.

A: TTR testers can test a wide range of transformers, including single-phase transformers, three-phase transformers, voltage transformers, and current transformers. They are also suitable for testing specialized configurations like phase shifting transformers and transformers with on-load tap changers (OLTC).

A: When selecting a transformer turns ratio tester, consider factors such as the range of transformer types it can test, the accuracy and resolution of measurements, the ease of use, and additional features like automatic vector group detection and data logging capabilities.

A: To perform a test using a TTR tester, connect the test leads to the transformer’s primary and secondary windings, select the appropriate test set for single-phase or three-phase measurements, and initiate the test. The tester will apply a voltage, measure the resulting voltage, and calculate the turns ratio, displaying the results for analysis.

A: Yes, TTR testers are versatile tools that can be used for both diagnostic purposes and routine maintenance. They help in detecting faults, verifying transformer integrity, and ensuring optimal performance, making them essential for preventive maintenance and troubleshooting scenarios.