Relays, wires, connectors, terminals and other components have their own corresponding performance requirements and test approvals. When these components are combined to form a high-voltage wiring harness assembly, assembly testing is still required.
This is because even if the performance of the parts is qualified, the test approval and the production certificate are obtained, there are many links in the entire production chain, and there will still be many uncertain factors in the links of incoming materials, transportation, storage, and final assembly. Therefore, for assembly The completed high-voltage wiring harness assembly still needs to be tested to verify whether its functional characteristics are qualified and whether it meets the final loading requirements.