Does anyone know anything about pressure resistance?
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Does anyone know anything about pressure resistance? For example, how to make 6000V equipment and what voltage should be applied? What voltage does a 400V device use? I think it's a multiple higher, but I've forgotten the exact number.
Please describe in detail what device it is. Power transformers, circuit breakers, and insulating tools are required to withstand AC voltage, and power cables are required to withstand DC voltage.
6000v dry transformer, high voltage inverter and power cable, what are the specific requirements for withstand voltage testing of these things?
The factory test of 6KV dry transformer withstand voltage is 20KV, and the handover test is 17KV. Just know this.
You can refer to the following GB 50150-2006
When we conduct experiments, it depends on the situation. Generally, the imported equipment will set the rate higher, and the domestic equipment will set the rate lower, but it must be at least 2 times or 3 times.
I used to sell withstand voltage testers, but now I only remember that the 220V withstand voltage test is twice the rated voltage plus 1000V. It seems to be some national standard 9706.1, haha, I have almost forgotten it!
Speaking of pressure resistance, we must talk about the principle of pressure resistance experiment: Withstand voltage testing refers to testing the withstand voltage capabilities of various electrical devices, insulating materials and insulating structures. The process of applying high voltage to insulating materials or insulating structures without destroying the performance of the insulating materials is called withstand voltage testing. Generally speaking, the main purpose of the withstand voltage test is to check the ability of the insulation to withstand working voltage or overvoltage, and then to check whether the insulation performance of the product equipment meets safety standards. Basic principles of withstand voltage testing: A higher than normal operating voltage is applied to the insulator of the equipment under test for a specified period of time. If the insulation is good enough, the applied voltage will only produce a small leakage current. If the leakage current of the insulator of a device under test remains within the specified range within a specified period of time, it can be determined that the device under test can operate safely under normal operating conditions. When performing a withstand voltage test, the test product has different technical specifications and different measurement standards. For general equipment under test, the withstand voltage test is to measure the leakage current value between the live wire and the chassis. The basic rule is: Use twice the working voltage of the object under test plus 1000V as the standard voltage for testing. The test voltage of some products may be higher than this specified value. According to the provisions of IEC61010, the test voltage must gradually rise to the required test voltage value (such as 5kV, etc.) within 5 seconds to ensure that the test voltage value is stably applied to the insulator under test for no less than 5 seconds. At this time, the leakage current value of the measured circuit is compared with the leakage current threshold specified in the standard, and it can be judged whether the insulation performance of the product under test meets the standard. After the test, the test voltage must gradually drop to zero within the specified time.