Charging pile charging cable test experiment
China [CN] As the main charging equipment for electric vehicles, the safety and reliability of charging piles are directly related to the operation and comprehensive promotion of electric vehicles. High-quality charging pile cables are an important guarantee for the safe and efficient operation of charging piles. In the current electric vehicle market, it is necessary to test the charging pile cable before leaving the factory.
1. Charging pile cable insulation and sheath test experiment
Including thermal weight loss, thermal shock, high temperature pressure, low temperature bending, low temperature tensile, low temperature impact, flame retardant and other functions, this is to test the performance of plastic insulation materials and sheathing, such as thermal shock test to determine the insulation surface after special winding Whether it is cracked at 150 for 1h, the high temperature pressure test insulation data is the elastic continuity after high temperature re-cooling; all low temperature experiments are to test whether the cable data becomes brittle, easy to crack or easy to crack in low temperature environment.
Flame retardant test: The product cable installed according to the specification is ignited with a special flame within a certain period of time. After the flame is extinguished by itself, check whether the cable is burned. The test result shows that the flame retardant is poor, and the flame retardant is better, the safer.
2. Charging pile cable inspection and marking method
According to the specification, a label or sign should be attached to the cable package, indicating the product model, specification, specification number, factory name and place of origin. The specification includes additional voltage, number of cores and rated cross-section of the conductor, etc. Marking of product model and additional voltage, the marking distance is required to be 200mm or 500mm (insulation surface) or 500mm (sheath surface), the cable surface should be marked with the manufacturer's name, product model and additional voltage, and the gauge distance is required to be 200mm (insulation surface) or 500mm (sheath surface) should be complete, clear, scratch-resistant and pressure-resistant. In addition, the insulated core wire of the wire should preferably choose the color recommended by the specification, especially the yellow/green two-color core wire, which is generally used in electrical products. This special two-color wire is specially used for grounding. For the yellow/green matching code, there are also the following regulations: For each insulated wire core with a length of 15mm, one color should cover at least the surface of the insulated wire core 30% and no more than 70%, the other color should be basically balanced.
3. Structure and dimension inspection of charging pile cables
Including thickness, thin wall, external dimensions, etc. Insulation and sheath Insulation layer and sheath play a very important role in the voltage strength and mechanical properties that the cable can withstand, so for cables of different specifications, the thickness of the specifications has strict specifications. It is stipulated that it cannot be lower than the specification value. If the insulation thickness of the cable is too thin, it will seriously affect the safety of the cable and bring about potential safety hazards such as cable breakdown and exposed conductor leakage.
To learn more about EV cables and charging pile cables, please visit OMG's official website: https://www.omgevcable.com/
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