IS 398 Testing: Aluminium Conductors for Overhead Lines

Standard	IS 398
Covers	Aluminum Conductor For Overhead Transmission Purpose, Part-2 Galvanised Steel Reinforced; High conductivity aluminium alloy stranded conductors; Aluminium conductors for overhead transmission purposes (ACSR); Aluminium conductors for overhead transmission purposes (AAC); Aluminium conductors for overhead transmission purposes (AAAC)
Accredited tests	40
Accreditation	NABL, ISO/IEC 17025:2017
BIS-recognised testing	Ask us which laboratory your BIS scheme accepts
Category	Conductor & Insulating Mat Testing

IS 398 tests we offer

Aluminum Conductor For Overhead Transmission Purpose, Part-2 Galvanised Steel Reinforced

#	Test	Clause / method
1	Breaking test of individual wires	IS 398 (Pt 2):1996
2	Ductility test (Elongation)	IS 398 (Pt.2):1996
3	Ductility test (Torsion test)	IS 398 (Pt.2):1996
4	Galvanizing test b. weight of zinc coating	IS 398 (Pt.2):1996, IS 4826:1979, IS: 10810 (Pt 41)1984
5	Galvanizing test a. uniformity of zinc coating	IS 398 (Pt.2):1996, IS 4826:1979, IS:10810(Pt 40)1984
6	Measurement of diameter of individual aluminium and steel wires	IS 398 (Pt 2):1996
7	Measurement of lay ratio	IS 398 (Pt 2):1996
8	Resistance test	IS 398 (Pt.2):1996
9	Stress-strain test	IS 398 (P-2) Cl 13.11 & 14.1 c
10	Surface condition test	IS 398 (P-2) Cl 13.9 & 14.1 a
11	Test for ultimate breaking load on stranded conductor	IS 398 (P-2) Cl 13.10 & 14.1 b
12	Wrapping test	IS 398 (Pt.2):1996

High conductivity aluminium alloy stranded conductors

#	Test	Clause / method
1	DC resistance test	Cl. 14, Cl.16.10 and Table 3 of IS 398 (Pt. 6)
2	Breaking load test	Cl. 14, Cl.16.5 and Table 2 of IS 398 (Pt. 6)
3	Elongation test	Cl. 14, Cl.16.6 and Table 1 of IS 398 (Pt. 6)
4	Freedom From Defects	Cl. 8 of IS 398 (Pt. 6)
5	Measurement of diameter	Cl. 14, Cl.16.4 and Table 2 of IS 398 (Pt. 6)
6	Measurement of lay ratio	Cl. 14, Cl.16.3 and Table 4 of IS 398 (Pt. 6)
7	Resistivity test	Cl. 14 and Cl. 16.7 of IS 398 (Pt. 6)
8	Stress-strain test on conductor	IS 398 (Pt 6):2021
9	Test for ultimate Tensile Strength test	IS 398 (Pt 6):2021
10	Visual examination	Cl. 14, Cl.16.2 of IS 398 (Pt. 6)
11	Wrapping test	Cl. 14 and Cl. 16.8 of IS 398 (Pt. 6)

Aluminium conductors for overhead transmission purposes (ACSR)

#	Test	Clause / method
1	Ductility test- (Elongation)	Cl.14.1(g) Cl.13.4,13.4.2 of IS 398 (Pt-2)
2	Ductility test-(Torsion test)	Cl.14.1(g) Cl. 13.4,13.4.1 of IS 398 (Pt-2)
3	Galvanizing test- b.weight of zinc coating	Cl.14.1(k) Cl. 13.7of IS 398 (Pt-2)
4	Measurement of diameter of individual aluminium and steel wires	Cl.14.1(d) Cl.13.2(Table 1,2) of IS 398 (Pt-2)
5	Measurement of lay ratio	Cl.14.1(e) Cl. 13.8(Table 4) of IS 398 (Pt-2)
6	Resistance test	Cl.14.1(j) Cl. 13.6of IS 398 (Pt-2)
7	Wrapping test	Cl.14.1(h) Cl.13.5.1,13.5.2 of IS 398 (Pt-2)
8	Breaking test of individual wires	Cl.14.1(f) Cl.13.3(Table 1 & 2)of IS 398 (Pt-2)

Aluminium conductors for overhead transmission purposes (AAC)

#	Test	Clause / method
1	Wrapping test	Cl.13.1(c) Cl.12.4 of IS 398 (Pt-1)
2	Breaking test of individual wires	Cl.13.1(b) Cl.12.3, (Table -1,2) of IS 398 (Pt-1)
3	Measurement of lay ratio	Cl.13.1(e) Cl.12.6 &(Table -3) of IS 398 (Pt-1)
4	Resistance test	Cl.13.1(d) Cl.12.5 (Table -1,2) of IS 398(Pt-1)
5	Measurement of diameter of individual aluminium wires	Cl.13.1(a) Cl.12.2(Table -1,2) of IS 398 (Pt-1)

Aluminium conductors for overhead transmission purposes (AAAC)

#	Test	Clause / method
1	Breaking test of individual aluminium low wires	Cl. of IS 398 (Pt-4), 12.2, (Table-1,2),12.3
2	Elongation test of individual aluminium alloy wires	Cl. of IS 398(Pt- 4),12.2 (Table-1,2), 12.3
3	Measurement of diameter of individual aluminium alloy wires	Cl. of IS 398 (Pt- 4), 3.1.2,Table 1,2
4	Resistance test of individual aluminium alloy wires	Cl. IS 398 (Pt- 4),12.4, (Table-1,2)

How IS 398 testing works

Tell us the purpose. BIS certification, a tender, a customer requirement or a design check. The purpose decides which clauses and which laboratory.
Get the sample list and quote. We confirm the tests, the number of samples and the timeline for your product and its variants.
Send samples. We help with labels, the test request and any technical documents the tests need.
Testing and report. Tests are carried out under NABL accreditation and the report lists each clause, the requirement and the result.
Review and use. We check the report before you submit it to BIS, a tender authority or your customer, and help if they raise a query.

Frequently asked questions

Which IS 398 tests are NABL accredited?

All 40 tests listed on this page are within NABL accreditation (ISO/IEC 17025), each against the clause of IS 398 shown next to it. The report carries the NABL accreditation mark for these tests.

Can the IS 398 test report be used for BIS certification?

BIS accepts reports only from laboratories it has recognised for the standard. Before testing, we confirm which laboratory your BIS application needs, so you do not pay for a report BIS will not accept.

How many samples are needed for IS 398 testing?

It depends on the product, its variants and the tests you need. Share the product details and the purpose of the test (BIS, tender or customer) and we will send the sample list and a quote.

Can you test only some clauses of IS 398?

Yes. For a tender, a customer complaint or a design check, we can test selected clauses. For BIS certification or a type test, every applicable clause has to be covered.

Other conductor & insulating mat testing

IS 15652 Insulating Mats

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