Safety regulations test related instructions

The basic theory of pressure resistance testing is to expose a product to a very harsh environment. If the product can maintain its normal condition in this harsh environment, it can be determined that it will also maintain a normal condition in a normal environment. The most common use of pressure resistance testing is

Dielectric Withstand Voltage Test

The basic theory of dielectric withstand voltage test is to expose a product to a very harsh environment. If the product can maintain its normal condition under such harsh conditions, it can be determined that it will also maintain a normal condition under normal conditions.

Functional testing during design - Determine the conditions under which the designed product can meet its functional requirements.

Specification testing during production - Confirm that the manufactured product meets its specification requirements.

Confirmation testing during quality assurance - Confirm that the product quality meets safety standards.

Safety testing after maintenance - Confirm that the product after maintenance maintains compliance with safety standards.

 

Different products have different technical specifications. Basically, during the dielectric withstand voltage test, a voltage higher than the normal operating voltage is applied to the product for testing. This voltage must be maintained for a specified period of time. If the leakage current of a component remains within the specified range within the specified time, it can be determined that the component should be very safe when operating under normal conditions. Good design and the selection of good insulating materials can protect users from accidental electric shock.

The dielectric withstand voltage test performed by safety test instruments is generally called "high-voltage dielectric test", abbreviated as "dielectric withstand voltage test". The basic regulation is to use twice the working voltage of the tested object plus 1000 volts as the test voltage standard. The test voltage of some products may be higher than 2 X working voltage + 1000 V.

For example, some products have an operating voltage range from 100V to 240V. The test voltage of these products may be between 1000V and 4000V or higher. In general, products with a "double insulation" design may use a test voltage higher than the standard of 2 X operating voltage + 1000 V.

Dielectric withstand voltage testing is more precise during product design and sample production than during formal production, because the safety of the product is determined during the design testing phase. Although only a few samples are used for judgment during product design, online testing during production should strictly require that all products must pass safety standards to ensure that no defective products will flow out of the production line.

The output voltage of the dielectric withstand voltage tester must be maintained within 100% to 120% of the specified voltage. The output frequency of the AC dielectric withstand voltage tester must be maintained between 40 and 70 Hz, and the peak value must not be lower than 1.3 times the RMS voltage value, and the peak value must not be higher than 1.5 times the RMS voltage value.