This machine is to perform fire-protecting of insulator or sheathing. Test method is that fix the specimen to the position at which the tip of the test flame without any affects by breeze as well, and keep it there for 15seconds,then removed it for 15 seconds, then removed it for 15 seconds. To repeat the above actions for five times observes the burn-rate of the specimen. The SZ-6811A type is able to be set for test interval and times of the flame, and operated automatically.
