Joints - Sterlite

For FR, FRLS cables , in addition to tests mentioned above, following additional tests are done
Test Function Specification Specified Value
Applicable For
Critical Oxygen index To determine the
percentage of oxygen
required for supporting
combustion of sheathing
material at room temperature
ASTM- D- 2863 Min 29
FR and FRLS
Temperature Index To determine at what
temperature 21 % of Oxygen
will support combustion of
sheathing material
ASTM- D- 2863 Min 250° C
FR FR and FRLS
Smoke Density
To determine visibility (light
transmission) under fire of
sheath material
ASTM- D- 2843 Max 60%
FRLS
Acid Gas generation To measure the amount of
Hydrochloric gas evolved
IEC- 754- I
Max 20% by weight
FRLS
Flammability test
from PVC sheath under
construction
1. To determine ignition 1. Swedish
1. Min 300 mm
FRLS
on group of cables resistance and flame
standard SS unburnt portion from
propagation under specified 4241475
top of 850 mm
conditions
class F3
2. To determine ignition 2. IEC 332- I 2. min unburnt portion FR and FRLS
Flammability
test on group
of cables
Longer Packing Lengths
resistance and flame
propagation under specified
conditions
3. To determine ignition
resistance and flame
propagation especially for a
bunch of cable under
specified conditions
To determine flame
propagation in cable in
installed conditions
3. IEC 332- 3
50 mm from the top of
600+ 25 mm sample after
specified duration
3. min 2.5m unburnt
above burner after
specified duration in
3.5 m sample
FR and FRLS
IEEE- 383 In total burning of 20
minutes at 1500 F of 8 m
cable samples, burning
shall not go the top
FR and FRLS
Larger Take up capacities in Sterlite make it possible to give longer delivery lengths than those mentioned in the catalogue to minimize number of joints
which are a major cause in failures.
The dimensional details, weights and packing are mentioned in Tables 1 to 10.
Issued: June 2012 3