Test Transformer Power Control Box



is essential equipment for power supply enterprises, large factories, metallurgy, power plants, railways, and other departments requiring power maintenance. It adopts advanced microelectronic processing technology, all processes can be set in advance, with a full Chinese interface, simple and clear operation. After setting all test items, the test is automatically conducted without manual intervention.



Fold Edit SectionFunctions



1. Monitoring functions: output current, instrument voltage



Zero position indication, open/close indication, timing indication



2. Protection functions: overcurrent protection time relay 3. Adopting a new type of time relay, the timing range is wider.



4. Adopting a new type of current relay, more accurate and reliable, ensuring personal and equipment safety.



5. Reasonable structure, small size, light weight. The test transformer power control console is used for voltage regulation control of 0.5~100KVA test transformers. Its working principle is: by adjusting the output voltage of the auto-transformer, the working voltage regulation within the rated voltage range of the test transformer is achieved. At the same time, the console is equipped with a high-voltage output voltmeter, low-voltage input ammeter, and overcurrent protection circuit. The test voltage value can be read conveniently, and the equipment can be reliably protected. Its principle is simple, structure is compact, and operation is reliable, making it an ideal device for withstand voltage tests. The test transformer power control console is divided into box type, desktop type, and electric type according to structure.



Fold Edit SectionBox Structure



The box structure is divided into two parts: the inner frame and the outer box. The inner frame integrates all electrical materials and the panel, and the outer shell is protective for easy maintenance. Its panel is shown in the figure. 1. Ammeter (-PA) 2. Voltmeter (-PV) 3. Time relay (-KT) 4. Current relay (-KA) 5. Overcurrent multiplier switch (-SA) 6. Start button (-1SB) 7. Stop button (-2SB) 8. Timing button (-1SB1) 9. Voltage regulator handwheel 10. Power indicator light (-HL1) 11. Zero position indicator light (-HL2) 12. Power transmission indicator light (-HL3) 13. Alarm indicator light (-HL5) 14. Power socket 15. Ground terminal 16. Instrument terminal 17. Output terminal



Fold Edit SectionCharacteristics



◆ Voltage, current, time, status information, and prompt information data are displayed on a 4.7-inch large LCD screen, with clear and intuitive readings;



◆ Full Chinese interface, simple and clear operation, adaptable to various application occasions;



◆ Touch-type key operation, all functions can be set via keys, improving product safety and reliability;



◆ Fully digital calibration method, abandoning the outdated potentiometer adjustment, extremely convenient for on-site use, and easy to control accuracy (this function is password protected);



◆ Keys directly set the test transformer ratio (this function is password protected), allowing flexible application when connecting testers of different voltage levels, truly achieving one control box compatible with multiple transformers;



◆ Status reminder function, full Chinese guided operation, can be skillfully operated even without the manual;



◆ During the test, a flashing high-voltage symbol is displayed on the screen, constantly reminding operators to pay attention to safety;



◆ Test result display function, can automatically judge the test result (test passed or failed), and reliably record the voltage during overcurrent, flashover, or breakdown of the test object;



◆ Test result audible alarm function, when the test passes or fails, the device emits different alarm sounds, and test personnel can directly identify the test result by the alarm sound;



◆ Pause function, in automatic control mode, this function can pause the voltage rise or fall at any point, and the pause time can be flexibly controlled by the test personnel, convenient for observing the state of the test object;



◆ Automatic timing function. In automatic control mode, when the voltage automatically rises to the set value, the device automatically starts timing, and when the timing time is up, the test result is displayed, and the device automatically returns to zero;



◆ Manual timing function, in manual control mode, the timer can be started manually, and when the withstand voltage time is up, the device automatically returns to zero (only desktop equipment has this function);



◆ Manual control mode, this mode is similar to the traditional electric rise/fall method, with rise/fall controlled by buttons, the device automatically judges the upper/lower limits, and has overvoltage protection;



◆ Intelligent control of voltage rise speed, when the voltage reaches 80% of the target voltage, the rise speed automatically slows down, and when it reaches 90% of the target voltage, the rise speed further slows down;



◆ Optional remote communication, door interlock alarm light and bell, external voltage divider calibration interface, etc.;



◆ Adopting a combination of hardware and software anti-interference technology, with stable performance and strong anti-interference capability.