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| Warranty: | 1 Years |
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I.Introduction:
The HZBB-10B transformer turns ratio tester is a fully automatic tester integrating turns ratio, voltage ratio, vector relationship, connection group, polarity, tap position, and excitation current testing functions . The tester features a 7- inch high-definition color touchscreen with a user-friendly interface and simple operation , allowing for full touchscreen operation without a keyboard . The instrument can be controlled entirely via a dedicated APP, and test data is stored and uploaded for easy retrieval. The tester overcomes the shortcomings of traditional turns ratio bridge tests by employing a three-phase precision inverter power supply, resulting in fast testing and high accuracy.
II. Main Functions
▪ It has a blind test function. When the connection group of a three-phase transformer is unknown, it can correctly measure the transformer's turns ratio, the phase relationship between the primary and secondary phases, and the group number, and list the possible connection groups of the transformer.
▪ It has the function of testing the ratio and polarity of CT and PT current transformers.
▪ It has a neutral (N) line measurement function, which can determine whether the neutral line is properly led out for transformers with a neutral (N) line.
It can automatically measure the turns ratio of three-phase and single-phase transformers and calculate the turns ratio error; it can measure the transformer connection group number and display the primary and secondary wiring vector diagrams, which are intuitive, clear, and concise.
▪ Features high and low voltage reverse connection protection, transformer inter-turn short circuit protection, tap changer incomplete opening/closing protection, and output full short circuit protection, increasing instrument stability.
▪ After inputting the rated parameters, it can automatically measure the transformer turns ratio, error value, and tap position. Especially for taps with asymmetrical taps, it can accurately measure the exact position of the transformer taps. It can measure up to 99 tap positions.
▪ Added tap sequence settings to accommodate transformers with high voltage at high tap positions and low voltage at high tap positions.
▪ Add low-voltage side tap settings to accommodate transformers with taps on the low-voltage side.
▪ The instrument has a printer output, a USB flash drive interface, and can also be equipped with an RS232 interface for easy paperless office work.
It can store 1000 sets of measurement results, and can export .csv files to a USB flash drive, which can be opened in Excel spreadsheets.
III.Parameter:
| Item | Specification |
| Test Range | Turns ratio: 0.9 ~ 40000 |
| Current: 0 ~ 2000 mA | |
| Phase angle: 0 ~ 360° | |
| Turns Ratio Accuracy | 160 V gear |
| 0.9-2.00:±0.05% | |
| 201-2000:±0.1% | |
| 2001-5000:±0.2% | |
| 5001-20000:±0.3% | |
| 20001-40000:±0.5% | |
| 40001-50000:±1% | |
| 80 V setting | |
| 0.9-200:±0.05% | |
| 201-2000:±0.1% | |
| 2001-5000:±0.2% | |
| 5001-20000:±0.3% | |
| 20001-40000:±0.5% | |
| 40 V setting | |
| 0.9-2000:±0.1% | |
| 2001-5000:±0.2% | |
| 5001-20000:±0.3% | |
| 20001-40000:±0.5% | |
| 12 V setting | |
| 0.9-2000:±0.1% | |
| 2001-5000:±0.3% | |
| 5001-20000:±0.5% | |
| Current Accuracy | ±(1% of reading + 0.5 mA) |
| Angle Accuracy | ±0.2° |
| Output Voltage | 160 V / 80 V / 40 V / 12 V (selectable) |
| Resolution | Turns ratio: min. 0.0001 |
| Current: 0.001 mA | |
| Phase angle: 0.01° | |
| Power Supply | 100-240 VAC, 50/60 Hz |
| Max. power: 60 W |
IV.Detailed Photos
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