What are the requirements for electromagnetic compatibility of New Energy Cables?
Publish Time: 2024-10-30
New Energy Cables have many strict requirements for electromagnetic compatibility, which are mainly reflected in the following aspects:1. Suppress the generation of electromagnetic interference (EMI):Reduce the radiation of the cable itself: When transmitting electric energy, New Energy Cables should minimize the radiation of the electromagnetic field generated by itself to the outside world. This requires that the conductor design, insulation structure and shielding structure of the cable should be carefully designed and optimized. For example, in the selection of the shape and size of the conductor, it is necessary to ensure that the current is evenly distributed to avoid the generation of a strong electromagnetic field due to current concentration.Control the integrity of the signal: For some New Energy Cables that transmit both electric energy and signals, it is necessary to ensure that the transmission of the signal in the cable is not affected by electromagnetic interference to ensure the integrity and accuracy of the signal. This requires the cable to have good anti-interference ability, such as using a suitable shielding layer structure and grounding method.2. Have good anti-electromagnetic interference (EMS) ability:Resist the influence of external electromagnetic fields: There are various electromagnetic sources in the new energy system, such as motors, transformers, inverters, etc., which will generate strong electromagnetic fields when working. New Energy Cables must be able to work normally in this complex electromagnetic environment without being disturbed by external electromagnetic fields. Therefore, the shielding layer of the cable must have sufficient shielding effectiveness to effectively block the intrusion of external electromagnetic fields.Meet the immunity requirements of relevant standards: New Energy Cables need to meet the immunity requirements of the corresponding electromagnetic compatibility standards, such as the requirements for electrostatic discharge, radio frequency electromagnetic field radiation, and electrical fast transient pulse groups. Under these test conditions, the cable should be able to maintain normal working performance without problems such as malfunction and data loss.3. Optimize the grounding design of the cable:Ensure the reliability of grounding: Good grounding is an important measure to ensure the electromagnetic compatibility of New Energy Cables. The shielding layer of the cable needs to be properly grounded to effectively conduct the absorbed electromagnetic interference current into the earth and avoid the accumulation of interference current inside the cable. The connection of the grounding terminal should be firm and reliable, and the grounding resistance should be as small as possible to ensure the grounding effect.Avoid the formation of grounding loops: In new energy systems, multiple devices may form grounding loops through the grounding connection of the cable. Grounding loops cause current to flow in the loop, generating additional electromagnetic interference. Therefore, in the wiring and grounding design of cables, the formation of ground loops should be avoided as much as possible, or measures should be taken to reduce the impact of ground loops.4. Matching with the electromagnetic compatibility of the system:Cooperation with other components: As part of the new energy system, the electromagnetic compatibility of New Energy Cables should match that of other components in the system. When designing the system, the electromagnetic compatibility between cables and other components should be comprehensively considered to ensure that the entire system can operate stably in an electromagnetic environment.Meet the layout requirements of the system: The laying path and layout of New Energy Cables will also affect their electromagnetic compatibility. Cables should be kept as far away from electromagnetic interference sources as possible and avoid being laid parallel to cables of other sensitive equipment. If parallel laying cannot be avoided, sufficient spacing should be maintained to reduce electromagnetic coupling between each other.
