Product upgrading is the law of industry development. People usually pay attention to the performance and quality of the product, and often ignore the time quality of the product, that is, reliability. The launch of any new product should provide users with product performance quality, time quality, and economic indicators. The main methods to improve SPD reliability include:
a. Manufacturers improve the design of MOV chips, adopt new materials and improved processes to produce products with low failure rates and improve inherent reliability.
b. Provide a good environment such as suitable temperature, humidity, and air pressure to maintain environmental reliability.
c. Screen and age SPD to shorten the early expiration period.
d. Replace the degraded SPD according to the situation or regularly.
e. Choose an intelligent SPD and monitoring system that can carry out life warning.
f. Derating design is the main method to improve the reliability of SPD.
The derating design is to reduce the electrical stress (surge) borne by the SPD. A reasonable derating can greatly reduce the failure rate of the SPD.