5000A High Current Generator
Instrument Features:
1. It is a low-voltage, high-current dry-type transformer, suitable for current boosting and continuous load testing of 50Hz switches, current transformers, or other electrical equipment.
2. It adopts an integrated structure with high output voltage and strong load capacity. It is equipped with a current transformer for convenient monitoring of 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 gear; 5000A gear; 10000A gear), and 3000A can work continuously; DC output 10000A for short-time work, 3000A for continuous work; 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 a fan for forced cooling, and the iron core and coil temperature do not exceed 80°C during long-term rated current operation; the rectifier tube uses water cooling treatment, and it automatically stops when the temperature is abnormal.
5. The current output setting adopts an induction voltage regulator, which is convenient to operate;
6. Electric current rise and fall, all instruments use digital displays, with 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, time results, and intuitive display;
11. Perfect overcurrent protection, with arbitrary setting of target output current value, current upper limit, and current withstand time;
12. It has grounding detection function and zero-return detection function. The test can only be carried out after grounding and zero-return are confirmed, which is safe and reliable;
13. Approaching current rise algorithm, after reaching the set target output current, the current withstand timing starts automatically, and the motor automatically returns to zero after timing ends;
14. If the set output current upper limit is exceeded, the motor automatically returns to zero and an audible and visual alarm is issued;
15. It adopts a combination of hardware and software anti-interference technology, with stable performance, strong anti-interference, 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 properly, 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 the "high" or "low" position, and cannot be placed in the middle position.
For equipment with higher power, adjust the short-circuit plate position through series or parallel connection to complete the high current gear conversion.
3. Close the power supply, the green light is on (if the green light is not on, turn the voltage regulator knob counterclockwise to zero until the green light is on), press the start button, the green light goes off and the red light is on, turn the voltage regulator handle clockwise to increase the current to the required value.
4. Turn the voltage regulator handle counterclockwise to zero, press the stop button, the red light goes off and the green light is on, and the test ends.
Precautions:
1. The single machine equipment is heavy; when moving for testing, pay attention to personal safety. The test work must not be less than two people, one operates, one supervises the operation to ensure safety. Test personnel and the test object should maintain a corresponding safe distance. 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 have good grounding. During use, the current booster transformer and the operation 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-section should be sufficient (current density can be considered as 6-8A/mm). The contact surface should be cleaned (can be polished with fine sandpaper), otherwise the joint will heat up, and even the current cannot 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 source equipment, wires, and joints, and make records. Due to fluctuations in the grid voltage, pay attention to adjusting the TD to maintain the rated test current. Once any abnormal phenomenon is found during the test, 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 remove the test wiring in the reverse direction to ensure safety.
7. The test work should comply with the relevant regulations 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 at rated capacity for a long time, especially not allowed to run above the rated current to prevent overheating.
8. If the LCD screen does not display and the printer does not work, do not pat the panel, vibrate the body, or disassemble it yourself; contact the manufacturer for maintenance.
