Indian and IEC standards for cable accessories
Which document actually specifies the accessory, how to word the clause so the edition cannot drift, and what a certificate still leaves open.
The cable standard is not the accessory standard
Read your own scope line before you read a quotation. If the only standard in it is the cable's, the accessory is unspecified.
On the Indian side these are two documents with two scopes. IS 7098 governs XLPE-insulated cable, in parts split by voltage band. IS 13573 governs the joints and terminations that go onto it.
The IEC family works the same way. IEC 60502 is the extruded-cable document; only its Part 4 addresses accessories. A clause reading "accessories to IEC 60502" is therefore not answerable.
Write both. Cable standard against the cable, accessory standard against the accessory, and require the offer to state which document each line item is supplied under.
The families you will be asked to cite, by number
- IS 13573 — joints and terminations on polymeric insulated cable
- The number an Indian utility tender is most likely to name. Performance test requirements for accessories on polymeric-insulated cable in the 6.6 kV to 33 kV band, published in parts divided by voltage. Confirm the part and the edition in force against the BIS catalogue, rather than lifting the number out of an old tender.
- IEC 60502-4 — the accessory requirement document
- States what an accessory must withstand, for cable rated from 6 kV up to a 30 kV ceiling. Note the ceiling. Where an offer prints a 36 kV column under this reference, the column sits above the scope of the document beside it — ask which standard carries it.
- IEC 61442 — the matching test-method document
- Requirements and methods are split across two publications. One says what the accessory must survive, this one says how a laboratory applies it. Name only the requirement standard and the method is left to whoever does the testing.
- Above 30 kV — a different family, not a bigger number
- IEC 60840 covers cable and accessories above 30 kV to 150 kV; IEC 62067 continues above that. You cannot extend a 6-to-30 kV clause upward by writing a larger figure into it. The qualification regime changes, not just the voltage.
- IEC 60060 and IEC 60230 — how the voltage gets applied
- Laboratory procedure, not product performance. High-voltage test technique sits in the first, impulse testing on cable and its accessories in the second. Indian heat-shrink data commonly names them alongside IEC 60502 above a guaranteed-technical-particulars chart. They tell you how a figure was obtained.
- CENELEC HD 629.1, IEEE 404 and IEEE 48
- The documents you will be offered as equivalents. HD 629.1 addresses accessories for extruded-insulation cable; IEEE 404 is the joint standard and IEEE 48 the termination standard. Equivalence is a claim by the seller, not a property of the documents.
- ANSI C37.20.2 — application inside switchgear
- Cited when a cover, cap, boot or sleeve claims a place inside metal-clad switchgear. Indian PVC and polyolefin covers are commonly published as tested to it up to 36 kV. It qualifies where a part may be used, not the jointing of a cable.
Not published here — verify the edition yourself
Every reference above is a designation, not an edition. A clause citing a superseded edition is one a supplier can satisfy while still shipping the wrong thing. Confirm the current edition and amendment status of each against the issuing body — BIS for the IS numbers, IEC for the IEC numbers — before any of them reaches your document. No edition date is held on this site and none is guessed here. Then write the year into the clause, or use the floating-edition sentence below.
Type test, routine test, acceptance test: three obligations, three payers
All three collapse into the word "tested" on a quotation, then get argued about after the goods land. Separate them in the order.
A type test proves a design. One specimen, one laboratory, one occasion, and the manufacturer carries the cost. Nothing in it describes the batch on your delivery note.
A routine test happens in the factory on production, its cost already inside the price. Do not assume one exists. Ask which are performed, on what sampling basis, and require the record against your batch rather than the range.
An acceptance test happens on your delivery or your installed system, and you pay unless the order says otherwise. That is the negotiable one, set out on the acceptance tests page.
A supplier who replies "fully type tested" has answered one obligation out of three.
The methods index: what each cited method actually measures
| Property as a specification writes it | Method cited | What it actually measures | What to watch |
|---|---|---|---|
| Tensile strength and ultimate elongation | ASTM D638 | Force to break a moulded specimen, and how far it stretches first | Quoted in N/mm² and per cent, as a minimum rather than a typical value |
| Dielectric strength | ASTM D149 | Volts per millimetre at which a material sample punctures | A material property in kV/mm. Not the withstand rating of the assembly |
| Volume resistivity | ASTM D257 | Bulk resistance through the material, in ohm·cm | The figure separating an insulating component from a semi-conductive one |
| Dielectric constant | ASTM D150 | Relative permittivity of the compound | Appears on tubing and clip data. Rarely earns a tender clause |
| Density | ASTM D792 | Mass per unit volume of the moulded compound | Identifies the formulation. Two parts that look alike can read differently |
| Hardness | ASTM D2240 | Indentation hardness, on the Shore A or the Shore D scale | Two scales. Never read a Shore A figure against a Shore D one |
| Water absorption | ASTM D570 | Mass gained after immersion, as a percentage | Decisive only where the item is buried, immersed or in a flooded pit |
| Tracking and erosion resistance | ASTM D2303 | Surface tracking under wet contamination on an inclined plane | Published limit on non-tracking parts: 3.25 kV, 20 minutes, no failure |
| Behaviour of shrinkable tubing | ASTM D2671 | A method set covering several tests — among them 500 hours at 120°C, and flexibility at −40°C | One designation, many tests. Ask which were actually run |
| Heat shock | ESI 09-11 | A short severe overheat: 30 minutes at 250°C without cracking or flow | The margin between a shrink gun used correctly and an installer running late |
| Flammability | ASTM D876 and UL 94 | Self-extinguishing behaviour. UL 94-V0 is a rating awarded, not a value measured | A UL 94-V0 line and a UL file number are different claims |
| Continuous temperature limit | IEC 216 | Thermal endurance — the temperature the material holds in service | Published as a range. Check the lower end if the goods go somewhere cold |
| Application inside switchgear | ANSI C37.20.2 | The metal-clad switchgear standard covers are qualified against for enclosure use | Qualifies an application. Not a joint or termination standard |
Each method here appears on published Indian heat-shrink and moulded-accessory data. Individual product figures belong to individual datasheets and are not reproduced on this page.
CE marking, and why a medium-voltage accessory usually carries none
This comes up on nearly every European enquiry. The Low Voltage Directive, which puts a CE mark on most electrical goods sold into the EU, applies to equipment rated between 50 and 1000 V AC. A 12, 24 or 36 kV accessory sits well above that band, so the directive does not reach it and there is nothing to declare conformity against.
An absent CE mark on an MV accessory is not a hole in the vendor file. Insisting on one produces a refusal or a meaningless certificate.
What replaces it is the type test report against the accessory standard, plus the declaration your importer must make on entry. Confirm the applicable directives with a compliance adviser or a notified body — the liability sits with the importer, not with this page.
Watch the boundary rather than the label. The ceiling is 1000 V AC, and several ratings everyone calls low voltage sit just above it.
A management-system certificate is not a product qualification
ISO 9001 certifies a quality management system. ISO 14001 certifies environmental management. ISO 45001 certifies occupational health and safety management. None is a test on the accessory, and none belongs in a technical-qualification clause — they belong in vendor registration, where they do real work. When one is offered in place of a type test, send this: "Thank you — the ISO certificates are recorded against vendor registration. For technical qualification we need the type test report for the part code quoted: report number, issuing laboratory, date of issue, the standard and edition tested against, and the part code carried by the test specimen. Please confirm whether that report covers the construction and voltage class on this enquiry."
Clause wording you can paste into the purchase order
Six sentences. The first two stop the argument at inspection, the third stops a substitution, the fourth stops a report for another part code being passed off as yours.
- Governing standard. Accessories shall comply with [standard number and part], and the offer shall state the edition against which compliance is claimed.
- Edition date. Where a standard is cited in this order without a year, the edition and the amendments in force at the date of this order shall govern.
- Equivalence. An equivalent national or international standard may be offered only with a clause-by-clause comparison against the standard named above, accepted by the purchaser in writing before despatch.
- Type test evidence. The supplier shall submit type test reports from an independent laboratory, against the standard named above, for the exact part code supplied. A report issued against a different construction, voltage class or part code shall not be accepted.
- Management-system certificates. ISO 9001, ISO 14001 and ISO 45001 certificates shall be submitted for vendor registration only, and shall not be offered in place of type test evidence.
- Marking. Each kit shall be marked with the part code, the manufacturing batch and the standard it is supplied against, and the packing list shall repeat all three.
What a correctly cited standard still does not settle
Naming the right document is necessary and nowhere near sufficient. Four things stay open after the clause is signed.
It does not name a laboratory. An independent report and an in-house one can both be offered against the same wording, so state which you accept.
It does not reach the installation. Every published figure was recorded on an accessory fitted properly, by someone unhurried. Workmanship is a separate clause.
It does not fix the construction. A report covering a three-core PILC kit does not cover a single-core XLPE one at the same voltage, and a series-level certificate does not cover every code in the series.
And it does not survive a mixed kit. Swap one sleeve, one mastic or one ferrule for another maker's and the report no longer describes what went into the ground.
For a worked example of how one Indian supplier's certificates read against these families — which document, which voltage class, which date, and where coverage stops — see the manufacturer this site sources from.
Turn this into an enquiry that gets one answer
A standards clause is half an RFQ. The other half is the data that makes quotes comparable: construction, cores and cross-section, voltage class, mounting, quantity and destination. Both halves go in the same email.