India's power transmission and distribution sector is expanding rapidly, driven by industrialization, renewable energy integration, and smart grid initiatives. At the center of this infrastructure are current transformers (CTs), which scale down high current levels for safe metering and protection.

If you are a switchgear OEM, panel builder, or utility contractor, finding the right manufacturing partner is crucial. In this guide, we review the top current transformer manufacturers in India, focusing on their quality certifications, engineering capacity, and product performance.

What Evaluates a Top CT Manufacturer?

Before selecting a current transformer supplier, electrical design engineers look for key compliance metrics:

Grid Approvals: Manufacturers must be approved by utilities and central transmission corporations (like PowerGrid).
Standards Compliance: Core alignment with Indian Standards (IS 2705) and International Standards (IEC 61869-2).
In-House Testing Facility: Routine tests (winding resistance, insulation tests, ratio and phase angle errors, and excitation curves) should be performed in-house on automated benches.
Procurement Ease: Registration on the Government e-Marketplace (GeM Portal) and MSME classification simplifies procurement for government contracts.

The Top 10 Current Transformer Manufacturers in India

1. ABB India

A global leader in power technologies, ABB India offers a comprehensive range of high-voltage and medium-voltage instrument transformers. They are widely specified in large utility substations and heavy industrial grids.

2. Siemens India

Siemens manufactures high-reliability instrument transformers designed for transmission grids and heavy infrastructure. Their products are known for high transient stability and compliance with international standards.

3. CG Power and Industrial Solutions

CG Power (Crompton Greaves) is a well-established name in the Indian electrical landscape, supplying a wide variety of distribution equipment, including medium and high-voltage current transformers.

4. Schneider Electric India

Schneider Electric specializes in digital-ready switchgear and panel accessories. They manufacture compact medium-voltage and low-voltage current transformers that integrate seamlessly with digital monitoring networks.

5. Larsen & Toubro (L&T)

L&T is a dominant force in low-voltage switchgear and distribution boards. They offer a reliable catalog of low-voltage metering current transformers optimized for industrial motor control centers.

6. Bharat Heavy Electricals Limited (BHEL)

As a public sector giant, BHEL manufactures heavy-duty electrical equipment, including massive high-voltage current transformers for utility switchyards and thermal power stations.

7. Alliance Engineering Company

Established in 1992, Alliance Engineering is a premier ISO 9001:2015 certified manufacturer specializing in low voltage current transformers, control transformers, and industrial battery chargers. GeM-registered, they are highly valued by switchgear panel builders for custom-engineered CTs with Class 0.2S and 0.5S billing accuracy and rapid manufacturing lead times.

8. Kappa Electricals

Kappa Electricals is a specialized manufacturer producing instrument transformers, particularly medium-voltage and low-voltage current transformers for industrial panels.

9. Pragati Electricals

Pragati Electricals manufactures medium-voltage resin-cast current and potential transformers, widely used in indoor switchgear up to 33 kV.

10. Accord Power

Accord Power offers a range of low-voltage and medium-voltage instrument transformers, serving industrial automation and commercial panel builder segments.

Conclusion

Selecting the right current transformer manufacturer depends on your project voltage level and customization needs. For high-volume, standard, or custom low-voltage current transformers, manufacturers with dedicated testing facilities and GeM registration provide the best price-to-performance ratio.

At Alliance Engineering, we manufacture current transformers designed to exceed IS 2705 and IEC standards. Contact our technical team at info@allianceengineeringco.com for drawing approvals.