Description
Portable, three phase, Intelligent, ttr, Turn Ratio Tester
I. Main
functions and features:
1. Fully automatic transformation ratio
measurement function, which can automatically complete the measurement of
three-phase transformation ratio and group without setting any parameters. It
is easy to operate, just one click.
2. It can automatically measure the
transformation ratio of three-phase and single-phase transformers, and
calculate the transformation ratio error.
3. Built-in three-phase signal source, can
measure the transformation ratio of transformers of various connection groups
such as Y/y, Y/d, D/y, D/d, ZN/y, ZN/d, rectifier transformer, railway
transformer, etc. .
4. The label and polarity of the
transformer connection group can be measured. It also displays the primary and
secondary wiring vector diagram, which is intuitive and clear. The instrument
has a self-calibration function, which can determine the test line or
instrument failure according to the self-calibration result.
5. It can automatically track the position
of the on-load tap changer of the transformer, and automatically indicate the
current tap point.
6. It can display the primary and secondary
voltage waveform and phase relationship of the transformer, and can measure the
harmonics of the primary and secondary voltage of the transformer to facilitate
the analysis of transformer faults.
7. With CT, PT ratio and polarity test
functions.
8. Perfect and reliable automatic
protection function to ensure that the instrument is intact under various
abnormal conditions.
9. Small size, light weight, accurate
measurement and fast speed (testing is completed in about 3 seconds).
10. The instrument has a built-in 128M
memory (expandable 4G memory card), which can store all measurement results,
and can export the database with a USB flash drive. The database supports the
opening of excel spreadsheets.
11. Adopt 7-inch true color touch screen
operation, emwinGUI interface, support Chinese character input, simple and
convenient operation. No power down calendar, clock function, test time can be
stored at any time.
12. Can support Bluetooth or serial printer
to print records on site.
II. Main
technical indicators
1. Transformation ratio measurement range:
0.8-20,000
2. Transformation ratio measurement
accuracy: 0.2% (0.8-2000), 0.5% (2000-20000)
3. Input voltage: AC 40V output on the
high-voltage side.
4. Power supply: AC220V±15%
5. Working temperature: -10℃-40℃
6. Environmental humidity: 10%-85%
7. Volume: 270×190×70mm
8. Weight: 2kg (not including test wire)
The circuit design of the instrument is exquisite and the idea is
unique, which makes it superior in performance, powerful in function, small in
size and light in weight. The instrument uses a programmable signal source
inside, which can output single-phase, two-phase or three-phase standard sine
wave signals or high-frequency signals, and the output phase frequency can be
adjusted arbitrarily. It is especially suitable for the transformation ratio
test of special transformers, such as Z-type transformers, rectifier
transformers, Scott or reverse Scott transformers, etc. The instrument adopts
the new algorithm developed by our company to measure the transformation ratio
of the three-phase transformer without adjusting the balance of the three-phase
power supply and ensure the measurement accuracy. Therefore, the test speed is
fast, and the transformation ratio and wiring method can be measured in about 3
seconds.
