Current Transformer (CT) Manufacturing

§1What this business is

A current transformer steps a large AC current down to a small, standard current so meters and protection relays can read it safely. You make cores from cold-rolled grain-oriented (CRGO) steel, wind the secondary coils, fit them in flame-retardant polycarbonate or ABS cases (wound, ring/toroidal or bar type), and test accuracy in a laboratory. Buyers are panel builders, electricity boards, meter makers, substations and industries. The profile covers low-tension CTs for bus bars up to 40 × 12 mm and round conductors up to 35 mm.

Capacity: Not printed in pieces; sales of ₹100.00 L a year at full capacity, starting at 60% (₹60.00 L).

§2Is it right for you?

Skills you need

• Transformer and core design
• Coil winding and insulation
• Accuracy and ratio testing
• Tendering with electricity boards and panel builders

Why difficulty 4/5: Technical product, long buyer approvals and three loss-making years in the profile.

§3Market

§4Raw material & machinery

From: SIDBI Stand-Up Mitra project profile — Current Transformer (2018) — private guide — confirm locally

• Cold-rolled grain-oriented (CRGO) steel, grades M-3 to M-6 and HI-Bimported from Japan, Korea, Russia, Germany, France, the UK, Brazil and the USA, as the profile states
• Copper winding wire and insulationfor primary and secondary windings
• Polycarbonate or ABS cases (flame retardant, UL 94 V-0)for moulded low-tension CTs

From: SIDBI Stand-Up Mitra project profile — Current Transformer (2018) — private guide — confirm locally

§5Licences & registration

1. Udyam registration
2. GST registration
3. BIS certification if a Quality Control Order covers your CT type — check with BIS
4. Type tests at an accredited laboratory (such as CPRI) for utility orders
5. Vendor registration with electricity boards
6. State Pollution Control Board consent where required

We can do this registration for you

§6Schemes & subsidies

• CGTMSECentralActiveNo collateral, up to ₹10 crore
• Stand-Up IndiaCentralClosed₹10 lakh – ₹1 crore loan

CGTMSE for a loan without collateral; Stand-Up India (₹10 L–₹1 crore) for SC/ST and women founders. The ₹77.37 L cost is above PMEGP's ₹50 L ceiling.

§7Money

How the investment is worked out: Land ₹10.00 L + building ₹18.00 L + plant and machinery ₹27.00 L + furniture and electrical installations ₹3.00 L + preliminary and pre-operative ₹2.70 L + working capital ₹16.67 L = ₹77.37 L.

Working capital: Working capital ₹16.67 L (stocks ₹8.33 L, receivables ₹4.17 L, overheads ₹4.17 L); margin ₹7.29 L, bank ₹9.38 L. Finance: owner ₹19.34 L, bank ₹58.03 L.

SIDBI Stand-Up Mitra profile, uploaded in 2018 (no year printed on it) — prices will be higher now; check current costs.

How to prepare a loan file

§8Export potential

§9Risks — where people fail

• CRGO steel and copper price swings
• Slow approval and payment by electricity boards
• Batch failures in accuracy tests
• Competition from large instrument-transformer makers

§1030 / 60 / 90-day plan

A general plan that applies to any business. A plan for this business will be added after research.

1. Days 1–30: Visit a working current transformer (ct) manufacturing unit, ask 10 buyers about price and quantity, and get quotations from 3 suppliers.
2. Days 31–60: Udyam and the licences you need (Udyam registration, GST registration), a project report (DPR), and the scheme or loan file.
3. Days 61–90: Space and machines, trial production, and first deliveries to 10 customers.

§11Who to connect with

§12Watch

There is no episode on this business yet. Shows are coming soon on the Podcast page.

¶Sources

1. SIDBI Stand-Up Mitra project profile — Current Transformer (2018)

Data review: 6 October 2026. Spotted a mistake? Report it. For information only — not legal or financial advice.