7
Fiber storage
device
The fibers reserved are to be winded in fiber optic
splice tray (FOST), the length of fibers housed in
FOST is >1.6m, the curved radius is >30mm. During
the installation and maintenance, there should be
no attenuation on fibers.
At least 3 sets
sampled each time
Electrical
jointing
device
Inside FOSC: metallic components of fiber cables
has the functions of electrical putting through,
earthing connection and disconnecting. It is
possible to install earthing deriving device outside
the housing
Sealing
performance
After sealing according to the stipulated operation
procedures, the injected air pressure is
100KPa±5Kpa, when immersed in clean water of
normal temperature for 15 minutes, there should
be no air bubbles, then observed for 24 hours,
there should be no change of air pressure.
Re-sealing
performance
After reopening and resealing according to the
stipulated operation procedures, the injected air
pressure is 100KPa±5Kpa, when immersed in clean
water of normal temperature for 15 minutes, there
should be no air bubbles, then observed for 24
hours, there should be no change of air pressure.
Pull
Bearing pull is
≧
800N at axle orientation, there
should be no breakage on the housing.
Punching
Bearing pressure of 2000N/10cm for 1 minutes,
there should be no breakage on the housing
Impact
Bearing impact energy of 1
6N•m, 3
times of
impacts there should be not breakage on the
housing
Bending
The spot between the FOSC and seal fitting can
bear bending tension of 150N at bending angle of
±45
0
for 10 circles, there should be no breakage on
the housing
Torsion
Bearing
torsion 50N•m, 10 circle at torsion
angle±90
0,
There should be no breakage on the housing.
