Aluminium Conductors- Galvanized Steel –Reinforced for Extra High Voltage (400 kV and above), for Overhead Transmission Purposes
IS code: IS 398 (Part 5):1992
Description
IS 398 (Part 5):1992 is an Indian Standard that provides specifications for aluminum conductors with galvanized steel reinforcement intended for extra high voltage (EHV) applications, particularly for overhead transmission purposes. These conductors are used in high-voltage electrical transmission and distribution systems, often at 400 kV and above.
Some of the key aspects covered by IS 398 (Part 5):1992 include:
1. Scope:
The standard defines the scope of its application, which is to provide requirements for aluminum conductors with galvanized steel reinforcement for EHV applications.
2. Classification:
It may classify conductors based on their design, construction, and intended use, such as size, design parameters, and voltage ratings.
3. Materials:
The standard specifies the materials used in the construction of these conductors, including the type of aluminum and the galvanized steel wire.
4. Design and Construction:
It outlines the design and construction requirements for the conductors, including the arrangement and stranding of aluminum and steel wires to meet the specified electrical and mechanical characteristics.
5. Dimensions and Tolerances:
The standard provides detailed dimensions and tolerances for the conductors, including the diameter, lay ratio, and other relevant parameters.
Test Required for IS 398 (Part 5):1992
Freedom from defects
Diameter
Breaking load
Wrapping test
Resistance
Ductility test
Galvanizing test
Ratio of nominal dia. of Al to Steel Wire
Lay Ratio
Joints in Wires
Surface condition test
Visual Examination
Breaking load test
Conclusions:
If a product falls within the purview of the BIS Conformity Assessment Scheme, it is mandatory for manufacturers, importers, and foreign entities to acquire BIS ISI Certification. The Bureau reserves the right to revoke the license in cases where the product does not meet the certification prerequisites.
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