Page 362 - 3rd issue

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(Main unit (26 Quads) The required numbers of the quads are stranded together in one direction to form the main
(50 pairs) or (51 Quads) unit 50 or 100 pairs.
(100 pairs).

Unit identification. One binder of synthetic non-hygroscopic material wound helically around the main-unit.
Assembly The bin der colors will be: WHT,RED,YEL,GRN,BRN,BLU,ORA,BLK,(WHT/RED),
(WHT/GRN),(WHT/BLU),(WHT/BLK),(YEL/RED) WHT,RED,YEL,GRN,BR-
CORE FILLING N,BLU,ORA,BLK,(WHT/RED),(WHT/GRN),(WHT/BLU),(WHT/BLK),(YEL/RED),
CORE WRAPPING (YEL/GRN), (YEL/BLU), (YEL/BLK), (BRN/RED), (BRN/GRN), (BRN/BLU), (BRN/BLK).

The main unit are stranding together to form the cable core .the construction
of the cable core will be as shown in table (4):

Pair Cable Construction
Number
Center 1st Layer 2nd layer 3rd layer
2 1Q 21 Q
4 2Q 7Q 14 Q
6 3Q 8Q 16 Q
8 4Q 11 Q
10 5Q 9Q
16 1Q 10 Q
20 2Q
30 4Q 5 x 50"
50 3Q 6 x 50"
100 4Q 7 x 50"
150 5 x100"
200 3 x 50" 6 x 100"
250 4 x 50" 7 x 100"
300 5 x 50" 8 x 100"
400 1 x 50"
500 2 x 50"
600 3 x 50"
800 1 x 100"
1000 2 x 100"
1200 3 x 100"
4 x 100"

All interstices of the core are filled with a filling compound in order to block any possible
water ingress. The filling compound has homogenous, uniformly mixed, and contain
antioxidants. It has colorless and suitable for service in cable project to temperature
from 0 up to 70 OC.

Above the cable core, one non-hygroscopic dielectric (polyester) tape is longitudinally
applied with an overlap. The core wrapping provide sufficient heat barrier to prevent
visible evidence of the conductor insulation deformation or adhesion between
the conductors caused by the adverse heat transfer during jacketing operation.

SCREENING (SHIELD) A laminated aluminum tape is longitudinally applied over the core with suitable overlap.
AND MOISTURE The polyethylene coating side of aluminum tape will face the polyethylene sheath.
BARRIER And the aluminum face will be in contact with tinned copper drain wire which is used
to make termination easily and to ground electrostatic discharges.

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