Standards metal enclosed systems

Carrying power through metal-enclosed bus systems 28/901 Relevant Standards... 

The temperature of the guarded hot plate was kept at 35°C (ie, the temperature of the human skin) and for the determination of f th of the fabrics, the standard atmospheric conditions (65% relative humidity (R.H) and 20°C) were set. The test apparatus was enclosed in a climatic chamber, and the air speed, generated by the airflow hood, was set to 1.1 0.05 m/s. The test section was in the center of the plate, surrounded by the guard and lateral heater that prevented heat leakage. For the R test, the fabric sample was placed on the porous metal plate surface and the heat flux from the plate to the environment was measured. After the system reached steady state, total thermal resistance of the fabric was calculated using Eq. [19.6]. 

Must be equipped with a thermal protection system enclosed in a full metal Jacket all meeting specific performance standard requirements. Refer to 49CFR 179.101-1 and 179.105-4 [9j. 

---