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Common tests for connectors

Common tests for connectors

Blog | Nov 18,2022

All products delivered by LHE need to go through strict testing. Especially, with the high technical requirements of connector terminals and the increasing functions, the connector structure becomes more and more complex and the testing increases gradually.

For example, connectors are becoming more sophisticated and smaller, making it much more complicated to measure dimensions and detect appearance defects, not to mention internal performance.

Therefore, the connectors produced by LHE must be automatically detected by sophisticated detection machines, so as to ensure the accuracy, efficiency, and accuracy of detection.

Common tests for connectors

At present, connector tests are mainly divided into three categories:

● Electrical performance testing
● Environmental performance testing
● Electrical performance test

a. Electrical performance testing

The main test items and introduction are as follows:

Voltage test:

The purpose of this test is to verify that the electrical connector can operate safely at its rated operating voltage and to verify its ability to withstand transient overvoltage due to conversion, surge, and other similar phenomena.

Insulation resistance:

The objective is to establish a method for determining the resistance of the insulation materials and seals of electrical connectors under the action of a DC voltage that causes a leakage current to occur on or through the surfaces of these components.

Contact resistance:

The purpose is to measure the resistance of the contact part of a plug-in electrical connector with a certain length of wire by measuring the millivolt voltage drop at both ends of the contact part with a specified current.

Electrical continuity between enclosures:

The purpose is to determine the electrical continuity of the enclosures of electrical connectors under simulated service conditions

Magnetic conductivity:

The purpose is to verify whether the magnetic conductivity of the sample is lower than the specified value.

b.Environmental performance testing

The main test items and introduction are as follows:

Salt spray:

The purpose is to determine the effect of exposure of the electrical connector to a controlled liquid salt spray atmosphere on the components, surface treatment layer, mechanical structure, and permissible electrical parameters of the electrical connector.

Wet heat test:

Determine the adaptability of electrical connectors in high temperature and high humidity environment conditions

Temperature cycle:

To determine the resistance of electrical connectors to extremely high temperature, extremely low temperature, and alternating high and low-temperature shocks when exposed to simulated storage, transportation, and use.

Low-pressure dipping:

Verify the ability of a pair of plug-in electrical connector assemblies to seal the connector to the wire and interface seals against simulated moisture condensation during and after rapid descent from high altitude.

Ozone exposure:

Determine the ability of electrical connectors to withstand a certain amount of ozone.

Fire prevention:

In order to determine the ability of flame resistance after a certain period of time under the flame temperature specified in the special standard, the wire is connected and the electrical connector is plugged in.

Liquid impregnation:

Determine the resistance of an electrical connector to deterioration when exposed to specific liquids to which it may be exposed over the course of its service life.

Low-temperature low pressure:

the simulation of low-temperature conditions under the actual use of working conditions, and in the simulation of high altitude to apply the test voltage situation.

c. Electrical performance test

The main test items and introduction are as follows:

Shock:

The purpose is to determine the suitability of electrical connectors and accessories to withstand shocks during rough operations, transportation and military operations.

Vibration:

The purpose is to determine the extent to which the electrical connector may be affected by vibration in the main frequency band or in the range of random vibration bands during its life

Cable pulling:

The purpose is to test the ability of a cable or electrical connector to withstand accidental axial tension load.

Constant acceleration:

The purpose is to verify the ability of the electrical connector to withstand the expected operating acceleration environment to ensure that the product structure and performance do not fail in this environment.

Impact:

The purpose is to determine the ability of the electrical connector to withstand the impact it may encounter when it separates and falls to the ground. This test is only applicable to electrical connectors designed to meet this requirement.

Mechanical life:

The purpose is to determine the electrical connector or contact is affected by the separation cycle of the plug. The separation of the plug is the mechanical life of the electrical connector during its service life.

Insulator mounting plate fixation:

The purpose is to determine the adaptability of the fixing mechanism of the insulator in the electrical connector and the strength of the insulator material, as well as to establish the ability of the electrical connector to withstand the axial load generated by the combination of contact insertion and separation forces.

Insulator mounting plate fixation:

The purpose is to determine the adaptability of the fixing mechanism of the insulator in the electrical connector and the strength of the insulator material, as well as to establish the ability of the electrical connector to withstand the axial load generated by the combination of contact insertion and separation forces.

Electrical performance

Our factory area is more than 50,000 square meters, and the production equipment and technology in the factory are at the advanced level of the industry, to provide a strong production guarantee for delivery.

At the same time, it is also equipped with a number of inspection rooms, inspectors use high-quality and professional testing methods to strictly test the quality of products, so as to ensure the quality of products.

Taking 5557&5559&5566&5569 as an example, we will show you the product performance test of Lianhe Electronics (including but not limited to the following tests).

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