Can be used for testing three-phase transformers in power systems, especially suitable for testing Z-type winding transformers, rectifier transformers, and balance transformers. The instrument adopts a large screen LCD display, full Chinese menu and Chinese character printing output, user-friendly interface, complete functions, and easy operation. It is an ideal instrument for transformer ratio, group, polarity, and angle testing in power systems, transformer manufacturers, and railway electrical systems.
Suitable for testing single-phase or three-phase transformers, suitable for testing Z-type winding transformers, rectifier transformers, and Scott, inverse Scott, and balanced transformers in railway electrical systems.
1. The instrument comes with a lithium battery, which allows for variable ratio testing on site without the need for an external power source. At least 100 transformers can be tested on a single charge;
2. The instrument integrates single-phase and three-phase standard power supplies with stable amplitude and constant phase inside.
3. The internal standard power supply has a high output power, with a maximum output of 5A, which is particularly suitable for testing low-voltage transformers, as well as for testing the turns of semi-finished products in CT and PT manufacturing processes.
4. Accurately and quickly test the turn ratio, turn ratio error, and phase difference of current transformers (CT) and voltage transformers (PT).
5. High testing accuracy, the instrument adopts 16 bit high-precision AD and high-speed DSP processor, ensuring measurement accuracy and anti-interference ability.
6. The instrument adopts a non partial discharge voltage regulation output, with fast voltage regulation and measurement speed, and can complete voltage boosting and testing in just 5 seconds;
7. The instrument automatically determines the rated transformer ratio of the current tap:
8. 320x240 large screen, high brightness LCD display, full Chinese character menu and operation prompts achieve friendly human-machine dialogue.
9. Panel type thermal printer can quickly print test results on site.
Technical Parameter
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measuring range |
Variable ratio test range: 0.5-10000 Group testing scope: 1-12 Angle difference test range: 0-360 ° |
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precision |
Variable ratio measurement accuracy: +0.1%(0.5～1000) +0.2%(1001～2000) +0.5%(2001～4000) +1%(4001～10000) Angle difference measurement accuracy: 30` |
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Dielectric Strength |
The insulation resistance between the voltage and current input terminals and the casing is ≥ 100M Ω. The working power input terminal is subjected to a power frequency of 2kV (effective value) between the casing, The experiment lasted for 1 minute. |