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Contact: Andy Zhang
Company: Chongqing Junsun Mechanical & Electrical Ltd
No. 33 Xijiao Road, Jiulongpo District
Chongqing 400050
Phone: +86 23 88529890
Fax: +86 23 88529890
E-Mail: Send Inquiry
Date/Time:  3/8/19 2:37 GMT

JSTR-901 Series Fully Automatic Transformer Turn Ratio Tester

Contact: Andy Zhang
Skype: zxy.export
Tel: +86 23 88529890
Mobile (WhatsApp): +86 13696443439

JSTR-901 Series Fully Automatic Transformer Turn Ratio Tester is specially
designed and applied to measure the voltage ratio of three or single phase
transformer. All the data and test results are shown on a 320×240 LCD. All the
test results could be printed by the micro printer or saved on the storage of
the tester. The tester has a good performance on auto protection and anti-

1. The voltage ratio measurement of three or singe phase transformer
2. The group vector measurement of three phase transformer.
3. The polarity measurement of single phase transformer or CT/PT (CT that knee-
point voltage should be more than 80V).
4. Voltage ratio error calculation.
5. Voltage ratio range calculation of three phase transformer.
6. Current transformer ratio measurement.
7. Excitation current measurement in ratio testing.
8. Reproduction the AC test voltage from power source to reduce the effects of
bad power source.
9. Save the test results in the memory internal the tester.
10. Print the test results by micro printer.
11. Reverse connection detect unit to prevent the high voltage injected to the
12. Over current protection unit integrated in software and hardware.
13. Upload the test results to PC by RS232 and make word report by software.

Minimum Order: 1 sets

JSTR-901 Series Fully Automatic Transformer Turn Ratio Tester
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SOURCE: Import-Export Bulletin Board (
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