Input parameter selection principle
The input quantity closely related to the user is the working voltage of the coil, the voltage applied at both ends of the coil of the DC relay, it is recommended to use the rated voltage of the coil ±5%; and the pull-in voltage (or current) is the sensitivity of the relay controlled by the relay manufacturer and adjusted. The parameters for its judgment and assessment.
Mechanical property requirements
The ambient temperature range required for installation in the cockpit: -40 to 85 °C; the required ambient temperature range for installation in the engine compartment: -40 to 125 °C. The general relay basically needs to meet the life of 1 million times. Sometimes the relay has to work in an environment with poor heat dissipation. In such an environment, the selection should pay special attention to the working temperature of the relay, and at the same time, enough tests should be done for verification.