NF C 33-021 Testing: Pre-Insulated Joint Sleeves & Lugs

NABL accredited testing of pre-insulated joint sleeves & lugs to NF C 33-021: 12 tests, each against its clause.

Independent private consultancy. Aaditech is not BIS or any government department and is not affiliated with or endorsed by them. Licences are granted only by the authority, and you can apply directly on its portal. Our consultancy fees are separate from official fees.

Standard	NF C 33-021
Covers	Pre-insulated Joint Sleeves and Terminal Lugs
Accredited tests	12
Accreditation	NABL, ISO/IEC 17025:2017
Category	Overhead Line Hardware Testing

NF C 33-021 tests we offer

#	Test	Clause / method
1	Climatic Ageing Test	NFC 33-021 (Clause 6.6)/EN 50483-4 (Clause 8.2.5.2 & 8.3.5.1)
2	Corrosion Test	NFC 33-021 (Clause 6.7)/EN 50483-6 (Clause 8.4.1)
3	Crimping Ability Test	NFC 33-021 (Clause 6.3.1)
4	Dielectric Voltage Test	NFC 33-021 (Clause 6.4.1)/EN 50483-4 (Clause 8.2.3.1)
5	Electrical Ageing Test	NFC 33-021 (Clause 6.8)/BS EN 50483-4 (CIause 8.2.6 & 8.3.6)
6	Low Temperature Mounting Test	NFC 33-021 (Clause 6.5)/BS EN 50483-4 (Clause 8.2.4 & 8.3.4)
7	Marking	NFC 33-021 (Clause 7)
8	Tensile Test	NFC 33-021 (Clause 6.3.2)/EN 50483-4 (Clause 8.3.2)
9	Water Tightness Test	NFC 33-021 (Clause 6.4.2)/EN 50483-4 (Clause 8.3.3)
10	Endurance Test under Mechanical and Thermal Stresses	NFC 33-021 (Clause 6.9)/BS EN 50483-4 (CIause 8.2.7)
11	Salt Spray Corrosion Test	NFC 33-021 (Clause 6.7.1)
12	Sodium Hydroxide Corrosion Test	NFC 33-021 (Clause 6.7.2)

How NF C 33-021 testing works

Tell us the purpose. Export, 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 a regulator, a tender authority or your customer, and help if they raise a query.

Frequently asked questions

Which NF C 33-021 tests are NABL accredited?

All 12 tests listed on this page are within NABL accreditation (ISO/IEC 17025), each against the clause of NF C 33-021 shown next to it. The report carries the NABL accreditation mark for these tests.

Is the NF C 33-021 test report accepted outside India?

NABL is a signatory to the ILAC Mutual Recognition Arrangement, so its accredited reports are recognised by accreditation bodies in other member countries. Your buyer or regulator still decides what it accepts, so we confirm their requirement before testing.

How many samples are needed for NF C 33-021 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 NF C 33-021?

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 overhead line hardware testing

IS 2121 Conductor & Earthwire Accessories for Overhead Lines
IS 2486 Insulator Fittings for Overhead Lines
BS EN 50397 Covered Conductor Accessories
BS EN 50483 Aerial Bundled Cable Accessories
NF C 33-020 Insulation Piercing Connectors
NF C 33-041 Anchoring Clamps
NF C 33-040 Suspension Clamps

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

NF C 33-021 Testing: Pre-Insulated Joint Sleeves & Lugs

NF C 33-021 tests we offer

How NF C 33-021 testing works

Frequently asked questions

Other overhead line hardware testing

All NABL testing categories

Not sure which certification your product needs?