BIS Crosslinked Polyethylene Insulated Thermoplastics Sheathed Cables – IS 7098 Part 2

Introduction

As a manufacturer, exporter or importer of thermoplastic insulated power cables in India, obtaining BIS certification is essential for working voltages between 3.3kV to 33kV. Bureau of Indian Standards (BIS) certification demonstrates compliance to quality and safety standards as mandated by the government. 

In this blog, we explore the BIS certification process for crosslinked polyethylene insulated thermoplastic sheathed cables per IS 7098 (Part 2) specification. Read on to understand the required tests and steps to quickly obtain ISI certification for your high-voltage cables up to 33kV.

Tests Carried Out

BIS thoroughly evaluates all aspects of cable performance and quality through initial type testing at authorized laboratories. Samples of the cable are subjected to the following tests as per IS 7098 Part 2:

1. Construction review - To check components, workmanship and finish 

2. Conductor resistance test - To validate that resistance is within specified limits

3. High voltage test - Cables are tested at 3X rated voltage for 5 minutes with no breakdown or flashover

4. Insulation resistance test - Must not be less than 100 mega-ohms per km

5. Heating cycle test - Cable heated to maximum operating temperature for 4 hours with no damage

6. Fire resistance test - Cables must be flame retardant

7. Tensile test - For insulation and sheath material

8. Elongation test - On insulation and sheath

9. Ageing in air oven - Heat ageing followed by tensile tests 

10. Loss of mass test - Samples heated, mass loss measured  

11. Hot set test - Elongation measured after heat ageing

12. Shrinkage test - Dimensional change measured after oven ageing

13. Water absorption test - Gradual absorption at elevated temperature checked

Based on all the parameters evaluated in these tests, the cable must meet the acceptance criteria set as per IS 7098 Part 2 specification to be certified compliant by BIS for affixing the ISI mark.

BIS Documents For Domestic and Foreign Manufacturer Checklist

BIS ISI Mark Certification Costing And Timeline

Conclusion

With the demand for power cables continuously rising in India, BIS certification has become crucial for manufacturers and suppliers to be able to participate in government projects and tenders. By partnering with a competent certification body like EVTL India, the entire process of tests, factory evaluations and license approval can be streamlined and completed smoothly within your timeline.

Investing in a robust quality management system and product testing capabilities is vital to quickly obtain and maintain BIS certification. ISI marking also enables access to new markets and builds trust with customers that your cables meet the highest standards. For any assistance with getting certified or resolve any compliance issues, rely on expert BIS consultants. With the proper support, your organization can fulfill all mandatory requirements for bringing safer and performance oriented cables to the Indian market.

FAQs

1. Who needs to get BIS certification for cables?

Any manufacturer, exporter or importer dealing with high voltage power cables intended for sale in India needs BIS certification.

2. What is the specification standard for 33kV cables? 

33kV thermoplastic insulated cables must meet IS 7098 Part 2 requirements to get certified.

3. Does BIS evaluate manufacturing facilities?

Yes, the production process and quality control procedures are thoroughly audited through site visits.

4. What is the validity period of the certification?

BIS certification for cables is valid for 2 years. Renewal must be done timely to continue using the ISI mark.

5. Can EVTL consultancy assist us in the certification process?

Yes, consulting firms like EVTL provide end-to-end assistance and expertise to expedite BIS certification for clients.