Fiber Optic Closure

Sequence Number

Inspection Item

Requirement

Inspection
Results

Conclusion

1

Appearance and configuration

Appearance

Shape integnity,
No defect,color uniform

Meets the requirements

Qualification

Optical Fibers Storage Set

Residual fiber length no less than 1.6m

1.6m

Residual fiber curvature Radius no less than 30mm

35mm

Electric Connecting Set

Electnic connecting or shut off section in the box,ground lead-out section on the externl shell.

Meets the requirements

2

Seal performance

Charged with air which pressure is 60KPa±5KPa+6520-40,2h10cycles,Allow air pressure change 5KPa,immersed in the water for 15min,no air bubbl escape

No air bubble escape,air pressure change is 4KPs

Qualification

Sequence Number

Inspection Item

Requirement

Inspection
Results

Conclusion

3

Insulated Resistance

After soaked into the water which is 1.5m deep for 24h,Insulated resistance≥2×10⁴MΩ

Between two metal sections

1×10⁶MΩ

Qualification

Betwwen metal section and ground

1×10⁶MΩ

Qualification

4

Voltage Resisting Strength

After soaked into the water which is 1.5m deep for 24h,DC 15KV holding 1min,No breakage,no electric arc

Between two metal sections

No breakage No electric arc

Qualification

Betwwen metal section and ground

No breakage No electric arc

Qualification

5

Seal performance

Charged with air which pressure is 100KPa±5KPaimmersed in the water for 15min,no air bubble escape;After remove for 24hr,air pressure keeps unchanged

No air bubble escape,air press keeps unchanged

Qualification

6

Re-Seal performance

Repeat Seal performance 3 times,no air bubble escape;After remove for 24hr,air pressure keeps unchanged

No air bubble escape,air press keeps unchanged

Qualification

Sequence Number

Inspection Item

Requirement

Inspection
Results

Conclusion

7

Axis Tensile

For 800N axis strength Charged with air which pressure is 60KPa±5KPa,last 1 min,air pressure keeps unchanged

Air press keeps unchanged

Qualification

8

Crush

For 2000N/100mm,crush force,Charged with air which pressure is 60KPa±5KPa,last 1 min,air pressure keeps unchanged

Air press keeps unchanged

Qualification

9

Impact

16N·m,Charged with air which pressure is 60KPa±5KPa,air pressure keeps unchanged

Air press keeps unchanged

Qualification

10

Bending

150N,±45°,10cycles,Charged with air which pressure is 60KPa±5KPa,air pressure keeps unchanged

Air press keeps unchanged

Qualification

11

Torsion

50N,±90°,10cycles,Charged with air which pressure is 60KPa±5KPa,air pressure keeps unchanged

Air press keeps unchanged

Qualification