XHBB128B
Mandatory turns ratio/voltage ratio testing for power transformers is required during production (semi-finished/finished stages), pre-commissioning of new units, and per Ministry of Electric Power preventive test protocols. This test checks turns ratio correctness, tap changer condition, inter-turn short circuits, and parallel operation suitability. Traditional bridges have drawbacks: hard-to-read results and phase-by-phase testing. Our Turns Ratio Tester resolves these issues—featuring intuitive operation, a three-phase precision inverter power supply, fast testing speed, and high accuracy.
Technical parameters
| Test range |
0.9 ~ 10000 |
| Measurement accuracy |
± 0.1% + 2 words (0.9-500)
± 0.2% + 2 words (501-2000)
± 0.5% + 2 words (2001-10000)
|
| Resolution |
0.0001 min |
| Output voltage |
automatically adjust according to the load |
| Working power supply |
AC220V ± 10% 50 ± 1Hz |
| Ambient temperature |
- 10 ℃ ~ 40 ℃ |
| Relative humidity |
≤ 85%, no condensation |
Panel description
(1). Display screen: 7-inch high-definition color touch screen LCD, digital adjustment backlight, display operation menu and test results.
(2). High voltage terminal: connect the yellow, green, red and black terminals of the test line, and connect the three phases a, B, C and O on the high voltage side of the tested transformer.
(3). Low voltage terminal: yellow, green, red and black are connected to three phases a, B, C and o at the low voltage side of the tested transformer
(4). AC220V: power input port of the whole machine, connected to AC220V power frequency power supply.
(5). protective grounding post.
(6). Communication: serial communication
(7). USB: USB storage
(8). Printer: print test results after measurement.
List of attachments
|
Serial number
|
name
|
quantity
|
|
1
|
Transformation ratio tester
|
1 set
|
|
2
|
power cord
|
1
|
|
3
|
Test line
|
1 set
|
|
4
|
Serial port line
|
1
|
|
5
|
ground wire
|
1
|
|
6
|
Printing paper
|
1
|
|
7
|
Fuse (1A)
|
2
|
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