IS 2993 BIS Certification for A.C. Motor Capacitors
A.C. Motor Capacitors made, imported or sold in India must be certified against IS 2993 under an ISI mark licence (Scheme-I). What the standard covers, how testing works and how to get the licence.
About IS 2993
| Standard | IS 2993 |
|---|---|
| Title | A.C. motor capacitors |
| Product covered | A.C. Motor Capacitors |
| Category | Capacitors |
| Scheme | ISI mark licence (Scheme-I) |
| Notified under | BIS notification, SO 2434(E), dated 01st August 2017 · Order PDF |
Editions and amendments of IS 2993
| Edition | Published | Status |
|---|---|---|
| IS 2993:1998 A.C. motor capacitors (Second Revision) | 31 Jul 1998 | Current, next review 31 Dec 2027 |
No amendments to the current edition are listed by BIS.
Marking fee for IS 2993
BIS charges an annual minimum marking fee for the ISI mark under IS 2993, set by unit size, plus a per-unit rate once production passes the minimum:
| Unit size | Minimum marking fee (per year) |
|---|---|
| Large | ₹46,000 |
| Medium | ₹37,000 |
| Small | ₹23,000 |
| Micro | ₹9,200 |
Unit rate: ₹0.9 per piece. Source: BIS marking fee schedule for Scheme-I products, September 2026.
Sampling and key tests for IS 2993
From the BIS product manual for IS 2993, which BIS officers and applicants follow for certification:
Tests BIS can carry out in a day during factory inspection:
- Sealing test
- Voltage tests between terminals
- Voltage tests between terminals and case
- Visual examination
- Capacitance Measurement
- Tangent of loss angle
The full type test covers every clause of IS 2993; the list above is what can be checked on site.
ISI licences under IS 2993
BIS records 72 operative licences (79 including deferred, cancelled or under stop marking). Most licensed factories are in Maharashtra (16), Uttar Pradesh (13), Telangana (9), Delhi (8), Haryana (7).
Testing against IS 2993
BIS inspects the factory and has samples tested to the full Indian Standard at a BIS or BIS-recognised laboratory. After grant, the factory keeps testing production under the Scheme of Inspection and Testing, and BIS draws factory and market samples.
The test report has to cover every clause of IS 2993 that applies to the product, in the edition current on the date of testing. When BIS revises IS 2993 or replaces it with a new edition, existing licence holders move to the new edition by the date BIS sets in its notification.
How to get an ISI mark licence under IS 2993
The licence is granted to the manufacturer for a specific factory and product. Indian factories apply under Scheme-I; overseas factories apply under the Foreign Manufacturers Certification Scheme (FMCS) and must nominate an Authorised Indian Representative.
- Confirm the exact Indian Standard and the varieties to cover
- Get the product tested at a BIS-recognised lab (simplified procedure) or arrange BIS sampling
- Apply on Manak Online with factory, quality-control and test documents
- BIS factory inspection and sample verification
- Grant of licence, then marking with the ISI mark and CM/L number
Timeline. BIS targets 30 days under the simplified procedure (applying with a recent lab test report) and 90 days under the normal procedure. Overseas factories under FMCS typically take around 6 months.
Fees. Application fee ₹1,000 and annual licence fee ₹1,000, inspection charges of ₹7,000 per man-day, testing charges, and an annual minimum marking fee set for each Indian Standard (with concessions for micro and small units).
Mark. Certified products carry the ISI Standard Mark with the IS number and the CM/L-XXXXXXXXXX licence number.
Frequently asked questions
What does IS 2993 cover?
IS 2993: A.C. motor capacitors. BIS has made certification against it compulsory for A.C. motor capacitors.
Is BIS certification under IS 2993 mandatory?
Yes, for A.C. motor capacitors, under the BIS notification, SO 2434(E). The product needs a valid BIS licence (ISI mark) and must carry the ISI Standard Mark with the IS number and the CM/L-XXXXXXXXXX licence number.
Where is a product tested for IS 2993?
BIS inspects the factory and has samples tested to the full Indian Standard at a BIS or BIS-recognised laboratory. After grant, the factory keeps testing production under the Scheme of Inspection and Testing, and BIS draws factory and market samples.
How long does IS 2993 BIS certification take?
BIS targets 30 days under the simplified procedure (applying with a recent lab test report) and 90 days under the normal procedure. Overseas factories under FMCS typically take around 6 months.
Other standards in Capacitors
- IS 13340 Power Capacitors of Self-healing Type for AC Power Systems Having Rated Voltage up to 650V
- IS 13585 Shunt Power Capacitors of the Non-Self-Healing Type for AC System Having a Rated Voltage up to and Including 1000V Part-1 General Performance, Testing Amd Rating Safety Requirements Guide for Installation and Operation
Source: BIS lists of products under compulsory certification (Scheme-I, Scheme-II), checked October 2026. See the full BIS product list or all Indian Standards.
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