A typical sample for withstand voltage test capability verification

Abstract

This invention provides a typical withstand voltage test capability verification sample. One end of each of the first, second, and third branches is equipped with a first node, a second node, and a third node, respectively. The other ends of the first, second, and third branches are connected in parallel to a common node. The first branch includes a first resistor and a first capacitor connected in parallel. The second branch includes a second resistor and a second capacitor connected in parallel. The third branch includes a third resistor and a third capacitor connected in series. This simple combination of resistors and capacitors constitutes a typical withstand voltage test capability verification sample. The statistical analysis of the verification sample employs robust statistical techniques and can be used to evaluate the withstand capability of electrical equipment insulation materials under high voltage, verifying whether the insulation material can withstand a certain voltage without breakdown or damage, thereby ensuring the safety and reliability of electrical equipment.

Description

Technical Field

[0001] This utility model relates to the field of electrical product safety testing technology, and in particular to a typical withstand voltage test capability verification sample. Background Technology

[0002] Withstand voltage testing is a key testing item for electrical products, including audio-visual equipment, information electronic equipment, household appliances, lighting fixtures, and medical devices. The test principle of withstand voltage testing is to apply high voltage between the live parts of the equipment and the casing / ground for a period of time. The test voltage is usually much higher than the rated operating voltage of the equipment to simulate the insulation performance under extreme conditions. During the test, it is observed whether the insulation material can withstand the voltage without breakdown or whether the leakage current exceeds the standard.

[0003] The withstand voltage performance of equipment or products is relative to their operating voltage, insulation type, and environmental pollution level. Poor withstand voltage performance can cause equipment breakdown, electric shock to the human body, and serious product safety problems, endangering people's lives and property. Therefore, withstand voltage testing has always been a key focus of product supervision and quality control. Utility Model Content

[0004] The purpose of this invention is to provide a typical withstand voltage test capability verification sample with a simple structure that can accurately determine the insulation defects of the product under test.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows:

[0006] A typical withstand voltage test capability verification sample includes a first branch, a second branch, and a third branch. One end of the first branch, the second branch, and the third branch are respectively provided with a first node, a second node, and a third node. The other ends of the first branch, the second branch, and the third branch are connected in parallel to a common node. The first branch includes a first resistor and a first capacitor, which are connected in parallel. The second branch includes a second resistor and a second capacitor, which are connected in parallel. The third branch includes a third resistor and a third capacitor, which are connected in series.

[0007] Furthermore, the first resistor has a value of 400kΩ, the second resistor has a value of 210kΩ, and the third resistor has a value of 42kΩ.

[0008] The value of the first capacitor is 1.23 × 10⁻⁶. -8 F, the value of the second capacitor is 1.84 × 10 -8 F, the value of the third capacitor is 9.42 × 10⁻⁶. -8 F.

[0009] This invention uses a simple combination of resistors and capacitors to form a typical withstand voltage test capability verification sample. The statistical analysis of the verification sample is processed using robust statistical techniques, which can be used to evaluate the withstand capability of electrical equipment insulation materials under high voltage. It can quickly and accurately verify whether the insulation material can withstand a certain voltage without breakdown or damage, thereby ensuring the safety and reliability of electrical equipment. Attached Figure Description

[0010] Figure 1 This is a circuit diagram of the present invention.

[0011] Figure label:

[0012] 1. First branch road; 2. Second branch road; 3. Third branch road;

[0013] R1 is the first resistor, R2 is the second resistor, and R3 is the third resistor.

[0014] C1 is the first capacitor, C2 is the second capacitor, and C3 is the third capacitor.

[0015] A. First node, B. Second node, C. Third node, D. Common node. Detailed Implementation

[0016] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0017] This embodiment discloses a typical sample for verifying withstand voltage test capability, such as... Figure 1 As shown, it includes a first branch 1, a second branch 2 and a third branch 3. One end of the first branch 1, the second branch 2 and the third branch 3 are respectively provided with a first node A, a second node B and a third node C. The first branch 1, the second branch 2 and the third branch 3 are connected in parallel to a common node D.

[0018] The first branch 1 includes a first resistor R1 and a first capacitor C1, which are connected in parallel. The second branch 2 includes a second resistor R2 and a second capacitor C2, which are connected in parallel. The third branch 3 includes a third resistor R3 and a third capacitor C3, which are connected in series.

[0019] The first resistor R1 has a value of 400kΩ, the second resistor R2 has a value of 210kΩ, and the third resistor R3 has a value of 42kΩ; the first capacitor C1 has a value of 1.23×10-8F, the second capacitor C2 has a value of 1.84×10-8F, and the third capacitor C3 has a value of 9.42×10-8F.

[0020] The test in this embodiment was conducted at 50Hz / 60Hz / DC. When the specified leakage current was observed, the breakdown voltage was considered to have been reached.

[0021] Wait approximately 5 minutes between each test condition to allow the sample to fully discharge and cool, then increase the voltage according to the normal procedure of the test standard.

[0022] The first branch 1 is used to test the result of the first node A - common node D, the second branch 2 is used to test the result of the second node B - common node D, and the second branch 3 is used to test the result of the third node C - common node D.

[0023] The test conditions and test results are as follows:

[0024]

[0025] Robust statistical techniques were used for the statistical analysis of the validation samples. The values ​​reported by the laboratory were used as the laboratory test results, the median was used as the specified value, and the standardized interquartile range was used as the measure of variability (target standard deviation). The Z-score was calculated using the following formula for statistical evaluation:

[0026] Z=(xX) / σ

[0027] In the formula:

[0028] x - Participate in laboratory test results;

[0029] X - Specifies the value;

[0030] σ - A measure of variability (target standard deviation);

[0031] when The result was satisfactory.

[0032] when The result is questionable;

[0033] when The result was unsatisfactory.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A typical withstand voltage test proficiency testing sample, characterized by, The system includes a first branch (1), a second branch (2), and a third branch (3). One end of each of the first branch (1), the second branch (2), and the third branch (3) is provided with a first node (A), a second node (B), and a third node (C), respectively. The other ends of the first branch (1), the second branch (2), and the third branch (3) are connected in parallel to a common node (D). The first branch (1) includes a first resistor (R1) and a first capacitor (C1), which are connected in parallel. The second branch (2) includes a second resistor (R2) and a second capacitor (C2), which are connected in parallel. The third branch (3) includes a third resistor (R3) and a third capacitor (C3), which are connected in series.

2. The typical withstand voltage test capability verification sample according to claim 1, characterized in that, The first resistor (R1) has a value of 400kΩ, the second resistor (R2) has a value of 210kΩ, and the third resistor (R3) has a value of 42kΩ. The first capacitance (C1) is 1.23 x 10 -8 F, the second capacitance (C2) is 1.84 x 10 -8 F, and the third capacitance (C3) is 9.42 x 10 -8 F.

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