EV cable | Proof of performance test results of high voltage harness

 On the road, the electric vehicle seems to be simple in wiring structure, and the battery connection harness is formed. But in fact, the application environment of electric vehicle is bad, and the high-voltage cable of electric vehicle has very important performance requirements. Therefore, the cables for electric vehicles should be located in places with small wiring space, large current, high voltage, high and low temperature environment and poor heat dissipation, especially in northern China. The low temperature environment affects the transmission of power by high-voltage harness, so cables with high performance requirements must be provided. In addition, the driving environment of vehicles is poor, including salt fog and electromagnetic field, oil and chemicals, low smoke halogen-free flame retardant and other environmental protection and safety requirements. The following are the test requirements and results of Omega for high voltage harness, which can be used for reference.


Item: low temperature winding test requirements: - 40 ℃ / 4H winding without cracking / voltage resistance without breakdown


Objective: put the wound high-voltage cable into the - 40 degree incubator for four hours, and the surface of the product after taking out will not crack.


Item: short term aging test

Objective: in order to simulate the changes of insulation properties of running insulating materials under long-term work by using laboratory equipment in the shortest time. Specifically, the experiment can be accelerated by artificially accelerating the aging of insulating materials. A better accelerated experimental method can have equivalence, typicality and repeatability, of which equivalence is often the most important, because equivalence can truly reflect the aging process of insulating materials.


Item: insulation volume resistivity test

Purpose: the basic characteristic of insulating material is high insulation resistance. The higher the rated voltage of electrical equipment, the higher the required insulation resistance. However, if the insulation is damp, the surface is dirty or deteriorated, its characteristics will decline. If the above conditions are found on the cable, contact professional personnel to replace it.

Item: tensile and tear resistance test of products

Objective: to test the tensile and tear resistance of high voltage wire of electric vehicle


Item: flame retardant test of product performance

Objective: under the specified test conditions, the sample is burned. After the test fire source is scattered, the flame spread is only within the limited range, and the cable can extinguish itself within the limited time of residual flame or residual burning. Its characteristic is that it may be burned out and cannot run under the condition of combustion, but it can organize the fire and spread. Jane learned that in case of fire, the cable can limit the combustion to a local range without spreading, and effectively isolate other equipment to avoid greater losses.

To learn more about EV cable and EV Charging  cable, please visit OMG's official website: https://www.omgevcable.com/







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