In the manufacture of cables, intelligent efforts and standard laid down operating procedures at each and every stage are followed to achieve quality. For quality end products, control starts from proper design of the product. All raw material are selected carefully and only materials of high quality are used in production. Having done this, stagewise inspection is done to ensure conformity with the requirements of relevant Indian/International Standards where these apply.

Stage Wise Inspection :-

Wire Drawing

:

 Wire diameter
Surface
Shape
Quality of joints in the wire
Stranding of Wires : Quality of joints in the wire
Compaction of conductor
Shape of Conductor
Dimensions
Resistance of Conductor
Direction of Lay
Insulation : Dimension over Insulation
Thickness of Insulation
Surface defects
Curing : Hot set test, Tensile strength & elongation (for XLPE Insulation)
Laying Up : Sequence of Cores
Direction of lay
Diameter over laid up cores
Circularity
Inner Sheath : Thickness of Sheath
Diameter over Sheath
Surface Uniformity
Circularity
Porosity
Armouring : Diameter of Wires/
Dimensions of Strips
Direction of lay
Coverage
Quality of Joints of Wires
Outer Sheath : Thickness of Sheath
Diameter over Sheath
Tightness of Sheath
Ovality, Eccentricity, Porosity, Embossing

 

TESTS
The tests on cables have been classified broadly in four categories as follows:
Routine Tests:
Tests carried out on each Cable to check the requirements which are likely to vary during production.
Type Tests:
Tests carried out to prove conformity with the specification. These are intended to prove the general qualities and design of a given type of cable.
Acceptance Tests:
Tests carried out on samples taken from a lot for the purpose of acceptance of the lot.
Optional Tests:
Special tests to be carried out when required by agreement between the purchaser and the manufacturer.
Special tests required for FRLS Cables can also be carried out at our works i.e Halogen gas generation test to IEC-754 (Part-1), Smoke generation test to ASTMD-2843, Oxygen index test and Temperature index test to ASTMD-2863, Flammability test to (1) IEC-332-3, Flame resistance test to IEEE-383.