Author: Noyafa–CCTV Tester
Question: How to prevent problems during high current generator test? Answer: The high-current generator is a necessary equipment for the electric power and electrical industry in the debugging process of high-current places Do? Answer: The high-current generator is a necessary equipment for the power and electrical industries in the debugging process that requires high current Necessary equipment for high current places in electrical debugging, suitable for current load test and temperature rise test of frequency 50HZ switches, current transformers and other electrical equipment. During the use of high current test device, the current rises smoothly, the load variation range is large, and the work is reliable. It has the characteristics of easy operation and safety, and can also be used as a current source device for industrial and mining enterprises and power companies to conduct current or temperature rise tests. The built-in current transformer can easily read the test current value. It is not allowed to work under the rated capacity for a long time, especially it is not allowed to exceed the rated current to prevent overheating. Problem prevention during the high current generator test: 1. Connect the working circuit according to the electrical schematic diagram, and the transformer shell, console, etc. must be well grounded. 2. Turn on the power, the green indicator light on the console is on, press the start button, the red indicator light is on, and the current booster is waiting for the current to rise.
3. Rotate the voltage regulator evenly clockwise, pay attention to the output current indication on the console until the required high current, in order to ensure the test accuracy, a standard ammeter can be connected in series with the instrument terminal. 4. During the test, once an abnormal phenomenon is found, the power supply should be cut off immediately, and the test should be carried out after the cause is identified. 5. After the test, the voltage regulator must be reset to zero, the power supply must be cut off by pressing the stop button, and the working power supply can be cut off before the test wiring can be removed to ensure safety.
6. The high-current generator is designed for short-term work, so it is not allowed to work under the rated capacity for a long time, especially not to exceed the rated current to prevent overheating. Transformers that are newly installed and unused for a long time can only be used when the insulation resistance between the coils and the coil to the ground is measured with a 1500 megohmmeter before operation, and the resistance value is not less than 0.5 megohms. 7. During use, the step-up transformer and the console must be reliably grounded to ensure safety.
8. The flow should be raised slowly and evenly during use, and excessive vibration should be avoided during handling. 9. The contact surface of the voltage regulator and the brush should be kept clean, and wipe clean with 90% alcohol dipped in cotton yarn as appropriate.
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