a. Cover: the cover should be easily opened for easy installation; it should be provided with an outlet device for fiber metal high voltage protective earthing;
b. Inner components as follows:
Bracket: supporting the inner structure.
Fiber Optic Splice Tray: storing fiber connectors (together with the protective components) and the spare fibers, with the length being about no less than 1.6m; the curve radius of the coiled spare fiber should be no less than 37.5mm; makes that are easily recognizable should be provided for reconnection of fibers; should have adequate room for convenient operation;
Fixing Device: used for the fixation of fiber protective tubes and the fixation of pigtails.
5. Heat shrink protective sleeves are used to protect fiber connectors.
All components of the box should be made of materials which are of excellent anti-corrosion performance, if not, then it should be static plastic sprayed; the physical and chemical capabilities of the material should be stable and should be compatible.
The melting temperature for the material used for the heat shrinkable protective sleeves and the stuffing should be no less than 120°C, the intenerate temperature should be higher than 90°C, and could be used under -25 - 40°C;
4.2 All material should be innocuous, none-corrosion, no side effects to human being or other equipments.
-25 - 55°C
<85%(when the temperature is below 30°C)
Under the effect of 15kv/DC/1min, non-puncture, and no arc-over.