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NABL accredited testing

Conductor & Insulating Mat Testing

NABL-accredited testing of AAC, AAAC and ACSR overhead conductors, covered conductors, stay wire, earthing strand and insulating mats.

Transmission and distribution utilities buy conductors against IS 398 and expect an accredited report for every lot. We test strand diameter and lay, breaking load, resistance, elongation, wrapping, torsion and zinc coating, along with the BS and EN standards used for export orders.

Insulating mats for substations and panels are tested to IS 15652 for dielectric strength, ageing, flame and dimensional requirements.

Indian Standards we test to

StandardCoversTestsBIS-recognised
IS 398 Aluminium Conductors for Overhead Lines 40 —
IS 15652 Insulating Mats 19 Yes

International and other standards

StandardProductsTests
BS EN 50397Covered Conductors For Overhead Lines And Related Accessorioes For Rated Voltages Above 1kV AC and not exceeding 36 kV AC -Covered Conductors26
BS 215Aluminium Conductors, Steel Reinforced for overhead power transmission; Aluminium stranded conductors for overhead power transmission15
BS EN 50182Conductors For Overhead Lines Round Wire Concentric lay Stranded Conductors8

Who it's for

  • Conductor manufacturers supplying utilities
  • Electrical contractors and substation builders
  • Buyers of insulating mats for panels and substations

How it works

  1. Share the product and the purpose: BIS certification, a tender, a customer or export.
  2. Get the test plan. We list the standard, clauses, number of samples, cost and timeline.
  3. Send samples with the test request and technical documents.
  4. Receive the NABL accredited report, reviewed by us before you submit it.

Frequently asked questions

Which conductor types can be tested?

AAC, AAAC and ACSR conductors to IS 398, high-conductivity aluminium alloy conductors, covered conductors to BS EN 50397, concentric-lay conductors to BS EN 50182 and BS 215, hot-dip galvanised stay strand and earthing strand.

Is insulating mat testing to IS 15652 NABL accredited?

Yes. Dielectric, ageing, flame and dimensional tests to IS 15652 are within NABL accreditation, and testing is available at a BIS-recognised laboratory.

Other NABL testing categories

See the NABL testing service for how we work. Tests listed are within NABL accreditation (ISO/IEC 17025).

Not sure which certification your product needs?

Talk to a team led by former BIS Directors. We'll map every approval your product needs before you spend on testing.

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