Tested for Quality, Proven for Performance
Testing
Testing
1.Routine Testing
Routine tests are performed on every manufactured cable to verify its compliance with design requirements and detect variations that may occur during production. These tests include checking the diameter, shape, and surface of wires, compaction and shape of conductors, and tensile and elongation strength. Additional inspections cover insulation thickness, sheath diameter, and armour coverage to confirm uniformity. Parameters such as sequence of cores, embossing, and sheath tightness are also verified. Overall, routine testing ensures product reliability before cables are dispatched for use.
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2. Type Testing
Type tests are conducted to validate the overall design and construction of a cable type, ensuring it meets the specified standards and performance criteria. These tests confirm the cable’s capability to function effectively under rated voltage and operating conditions. They include tensile, wrapping, and annealing tests for conductors, as well as insulation thickness, resistance, and high-voltage verification. Flammability and hot set tests further assess the material’s thermal and fire resistance properties. Passing type tests certifies that the cable design conforms to IS specifications.
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Type Testing
3. Acceptance Testing
Acceptance tests are carried out on samples taken from a production lot to determine whether the entire batch meets quality and performance requirements. These tests serve as a final verification before the lot is approved for delivery. The evaluations typically include conductor tensile strength, wrapping, annealing, insulation and sheath thickness, insulation resistance, and high-voltage tests. Flammability and hot set tests may also be conducted to ensure safety standards are met. Acceptance testing guarantees that each batch consistently meets the buyer’s specifications.
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Acceptance Testing
4. Optional Testing
Optional tests are performed upon request or mutual agreement between the manufacturer and purchaser to assess special performance characteristics. For flame-retardant low-smoke (FRLS) cables, additional tests include flammability, oxygen index, temperature index, halogen acid gas generation, smoke density, and Swedish chimney testing. These evaluations are conducted in accordance with international standards such as IEC 60332, IEC 60754, and ASTM methods. Cold bend and cold impact tests may also be performed to assess low-temperature performance. Optional testing ensures enhanced safety, durability, and application-specific reliability.
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Optional Testing
5. Quality Control
When assessing the quality of power cables, several critical parameters must be considered to ensure optimal performance and safety. These include current carrying capacity, voltage rating, and flexibility, which determine the cable’s suitability for specific applications. The conductor quality, insulation properties, and overall durability directly impact the cable’s efficiency and lifespan. Strength and resistance to overheating are also key indicators of reliable performance. A combination of these factors ensures that the cable meets the desired electrical and mechanical standards.