These cables can be used on DC systems for rated voltage up to and including volts to earth. As copper has got higher affinity for sulphur, it corrodes in the atmosphere where sulphur fumes are present. In these conditions tinned copper should be used. Aluminium oxide film which is always present on Aluminium conductor surface acts as barrier and it protects the Aluminium conductor from corrosion in fumes laden atmosphere. As the area of conductor increase, solid conductor becomes more stiff and hence difficult to handle. In this case stranded construction is adopted.
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Made of These cables are insulated with high quality PVC, which is capable of handling external temperature above 85 degree Celsius.
These cables have multiple protective barriers that protect it from high temperatures. Formed by firmly twisting a bunch of cables together, these cables are enveloped with translucent non-gyroscopic polyester tape, also known as Mylar tape. The inner sheath of these cables are made of PVC and its thickness varies depending upon the size of the cable. However, the minimum thickness of the inner sheath is about 0.
Constructed with Galvanized Iron, the robust armour used in these cables protect it from technical and mechanical damage. Mostly used for industrial applications where power generation and distribution play a major role, Instrumentation cables are designed to cater to engineering and micro-processing segments.
4. POLYCAB Cable &Wires Catalogue
POLYCAB INSTRUMENTATION CABLES
POLYCAB LT XLPE CABLES