How to "Self-Make" a Simple High-Current Generator?
The daily "self-made" high-current generator has actually been put into use! Unbelievable, isn't it? The high-current generator not only solves the problem that relay protection of high-voltage equipment cannot be set, but also improves the safe operation of equipment and the accuracy of protection calculation parameters.
In some preventive and protective setting tests for power supply equipment, sometimes it is not only impossible to ensure the dynamic power supply equipment preventive and protective setting test needs, but also cannot effectively avoid the expansion of equipment fault range and losses caused by disasters. To solve this problem, combined with the actual needs of power supply safety management, based on the original iron core of a scrapped voltage regulator, using the principle of electromagnetic induction and the role of the circular iron core, a low voltage is applied to the primary side to generate a large current on the secondary side, successfully self-making a high-current generator. Its production is completed using the most common, universal equipment and the most practical technology to achieve the intended purpose. It has the characteristics of large load variation range, small size, reasonable design, and is easy to operate, safe and reliable.
At present, the high-current generator has been successfully tried out in substation equipment tests, playing a very important role in improving the safe operation of electrical equipment and analyzing and judging the causes of electrical faults; it can also be applied to other electrical equipment tests and protection settings of high and low voltage switchgear. This practice of solving big problems with small productions is very worthy of vigorous promotion.
Correct use of the high-current generator:
1. The instrument must be well grounded.
2. Connect the power supply, turn on the switch, the red indicator light is on, and the current generator is waiting to boost current.
3. Rotate the voltage regulator evenly clockwise, pay attention to the output current indicator on the operation panel until the required large current is reached.
4. During the test, once any abnormal phenomenon is found, cut off the power immediately, find out the cause, and then conduct the test again.
5. After the test, return the voltage regulator to zero, cut off the power with the air switch, cut off the working power, and remove the test wiring in the reverse direction to ensure safety.
