Product Details

Instrument Features:

1. It is a low-voltage high-current dry-type transformer, suitable for current boosting and continuous load tests of switches, current transformers, or other electrical equipment at 50Hz frequency.

2. It adopts an integrated structure with high output voltage and strong load capacity. Equipped with a current transformer, it can conveniently monitor the test current. (Above 4000A, it can be made into a split structure.)

5000A High Current Generator Technical Parameters:

1. Rated capacity: 50KV

2. Output current: AC output 10000A (divided into 3000A, 5000A, and 10000A gears), with 3000A continuous operation; DC output 10000A for short-time operation, 3000A continuous operation; Voltage: AC output >5V; DC output >5V;

3. Input voltage: two-phase 380V, 50Hz; rated input current <132A;

4. Temperature treatment and overheat protection (when the winding or rectifier tube temperature of the high current generator is abnormal, the instrument will automatically stop working). The whole machine uses fan-forced cooling, and the core and coil temperature does not exceed 80°C during long-term rated current operation; the rectifier tube uses water cooling treatment, and automatically shuts down if the temperature is abnormal.

5. The current output setting uses an induction voltage regulator, which is easy to operate;

6. Electric current raising and lowering, all instruments use digital displays for accurate and intuitive readings;

7. Maximum impedance of the test object ≤0.5mΩ

8. High-precision sensor and high-performance 14-bit AD acquisition chip;

9. Optional automatic current rise test, manual current rise test, and impact quick-break test, with flexible and simple operation;

10. Real-time display of output current and time results, clear and intuitive display;

11. Complete overcurrent protection, with arbitrary setting of target output current value, current upper limit, and current withstand time;

12. Equipped with grounding detection function and zero-return detection function. The test can only be carried out after grounding and zero-return are confirmed, ensuring safety and reliability;

13. Approaching current rise algorithm, automatically starts current withstand timing after reaching the set target output current, and the motor automatically returns to zero after timing ends;

14. If the output current exceeds the set upper limit, the motor automatically returns to zero and an audible and visual alarm is issued;

15. Combines hardware and software anti-interference technology, with stable performance, strong anti-interference ability, and adaptability to harsh electromagnetic environments;

16. Automatic error diagnosis, making it easy to find and solve problems;

17. Optional remote communication, door interlock alarm light and bell, open-circuit voltage calibration interface, etc.;

 Usage Method:

1. According to the debugging requirements, connect the current booster and the test object, and connect the power supply.

2. Select the position of the current transfer switch according to the current required by the test object. Since the current transformer is not allowed to be open-circuited, the current transfer switch can only be set to "High" or "Low" position, not in the middle.

For equipment with higher power, adjust the short-circuit plate position through series/parallel connection to complete the high-current gear conversion.

3. Close the power supply, the green light turns on (if the green light does not turn on, turn the voltage regulator knob counterclockwise to zero until the green light turns on), press the start button, the green light turns off and the red light turns on, rotate the voltage regulator handle clockwise to raise the current to the required value.

4. Turn the voltage regulator handle counterclockwise to zero, press the stop button, the red light turns off and the green light turns on, and the test ends.

Precautions:

1. The single machine is heavy; pay attention to personal safety when moving for testing. Testing work must be carried out by at least two people, one operating and one supervising to ensure safety. Test personnel should maintain a corresponding safe distance from the test object. Test personnel should wear protective equipment and set up a warning area.

2. The shell must be grounded. Do not ignore personal safety accidents due to low voltage. The instrument must be well grounded. During use, the current booster transformer and the operating console must be reliably grounded to ensure safety.

3. The wire from the secondary side of the current booster to the test object should not be too long, and the cross-sectional area should be sufficient (current density can be considered at 6-8A/mm). The contact surface should be cleaned (can be polished with fine sandpaper), otherwise, the joint will heat up, and the current may not rise to the rated value.

4. Before work, check that the power supply has sufficient capacity; otherwise, the power cord will heat up and the voltage will drop, affecting normal operation.

5. There should be no flammable materials at the work site. For temperature rise tests, sufficient fire extinguishing equipment should be prepared.

6. For continuous (temperature rise) tests, someone should be on duty at the site. Regularly check the heating condition of the current boosting source equipment, wires, and joints, and make records. Due to grid voltage fluctuations, pay attention to adjusting the TD to maintain the rated test current. During the test, once any abnormal phenomenon is found, immediately cut off the air switch power supply, find out the cause, and then conduct the test again. After the test, the voltage regulator must be returned to zero, cut off the power supply with the air switch, cut off the working power, and then remove the test wiring to ensure safety.

7. Test work should comply with the relevant provisions of the electric power safety work regulations and formulate practical safety measures. The instrument is designed for short-time work, so it is not allowed to work under rated capacity for a long time, especially not allowed to exceed the rated current operation to prevent overheating.

8. If the LCD screen does not display and the printer does not work, it is forbidden to tap the panel, vibrate the machine, or disassemble it yourself. Contact the manufacturer for maintenance.



 

Note: The above information and technical parameters are compiled and released by Yangzhou Darui Electric Co., Ltd.