Selection Criteria For High Temperature And Heavy Load Connectors For Industrial Electronic Equipment!

The stable operation of industrial electronic equipment in high temperature environment is inseparable from the key role of high temperature resistant heavy power connector. When selecting, it is necessary to comprehensively consider multiple indicators such as heavy duty wire connectors material properties, electrical performance, mechanical strength, etc. to ensure the reliability and safety of wire connector heavy duty under extreme working conditions. This article will analyze in detail the core selection factors of high temperature resistant heavy duty electric cable connectors.
1. heavy duty automotive electrical connectors temperature grade index:
1. Continuous working temperature range: Industrial grade heavy duty 12v connectors needs to meet the working range of -40℃ to +200℃, and the special application requirements of aerospace can reach +260℃
2. Peak tolerance temperature: The ability to withstand high temperatures for a short time (usually 15-30 minutes) should be examined, such as the instantaneous tolerance index of +300℃
3. Temperature cycle performance: It needs to be verified by at least 500 times of -40℃/+200℃ thermal shock tests
2. heavy duty 12 volt connectors material property requirements:
1. Insulating material:
o PTFE (polytetrafluoroethylene), PI (polyimide) and other high temperature resistant engineering plastics are preferred
o The glass transition temperature (Tg) should be higher than the working temperature by more than 30%
2. Metal contact material:
o Gold-plated nickel alloy is recommended (working temperature ≤200℃)
o Platinum-rhodium alloy or tungsten-copper composite material should be used for high temperature applications
3. 12v heavy duty connector electrical performance parameters:
1. Contact resistance: should be maintained at ≤5mΩ at 200℃ (at rated current)
2. Insulation resistance: should maintain ≥1000MΩ (500VDC test voltage) under high temperature conditions
3. Withstand voltage strength: withstand at least 1.5 times the rated voltage of the power frequency withstand voltage test
IV. heavy duty crimp connectors mechanical reliability indicators:
1. Plug-in life: ≥500 plug-in cycles must be guaranteed under high temperature environment (in accordance with IEC 60512 standard)
2. Vibration tolerance: pass 10-2000Hz random vibration test (3.13Grms)
3. Sealing level: protection level should reach IP67 or above (under high temperature conditions)
V. heavy duty waterproof electrical connectors special environment adaptability:
1. Chemical corrosion resistance: need to pass 96 hours salt spray test (ASTM B117 standard)
2. Thermal aging performance: mechanical performance decay ≤15% after 2000 hours of high temperature aging
3. EMI shielding effectiveness: shielding effect ≥60dB at 1GHz frequency
The above index system provides a systematic reference for the selection of industrial electronic equipment. In actual applications, parameter corrections need to be made in combination with specific working conditions. It is recommended to give priority to products that have passed international certifications such as UL and IEC, and pay attention to the need for differentiated material solutions in different temperature ranges.