Auto Transformers for Efficient Voltage Conversion
As one of the established auto transformer manufacturers in India, Rishab Industries designs and manufactures auto transformers supporting power ratings up to 1500 kVA, suitable for operation at 50Hz and 60Hz. Built using CRGO or CRNGO cores with precision-wound copper or aluminium strip conductors, these transformers are available in open-type and cubicle-enclosed configurations and are manufactured at our ISO 9001-certified Pune facility, complying with CE and RoHS requirements.
Why Choose Rishab Industries?
With over three decades of experience, Rishab Industries stands among leading auto transformer manufacturers in India, supplying power and auto transformers to OEMs, EPC contractors, and industrial control panel manufacturers.
Our auto transformers are compact, easy to install, and deliver consistent reliability in applications where electrical isolation is not required but precise voltage conversion is essential.
- CE & RoHS Compliant Units
- ISO 9001:2015 Certified Manufacturing Plant
- Customizable Voltages, Ratings & Mounting Formats
- Copper or Aluminum Based on Application & Budget
- High Durability in Thermal and Vibrational Conditions
- Export-Ready Packaging & Documentation
Key Highlights:
- Used for Step-Up or Step-Down Applications
- Cost-Effective Compared to Isolation Transformers
- Compact, Lightweight & Space-Efficient Design
- Ideal for Industrial & Commercial Loads
- Fully Prewired & Factory Tested
- Can Be Supplied with Cubicle Enclosure
- Designed as per Customer’s Electrical Specs
- Available in Copper or Aluminium Windings
- RoHS & CE Compliant Designs
Technical Specifications:
| Parameter | Specification |
| Input & Output Voltage | As per the customer specification |
| Power Rating | Up to 1500 kVA |
| Phase Configuration | Single Phase / Three Phase |
| Frequency | 50Hz / 60Hz |
| Cooling Type | Dry Type / Air Natural Cooling |
| Insulation Class | Class H / R |
| Conductor | Strips/Foils of Copper/Aluminium |
| Core Type | CRGO / CRNGO |
| Certification | CE, RoHS Compliant |
Applications:
- UPS Input/Output Voltage Adjustment
- HVAC Control Panels
- CNC & Industrial Machinery
- Office and Commercial Voltage Stabilisation
- LED Lighting Systems
- Battery Chargers & Rectifiers
- Renewable Energy Setups (Solar / Hybrid Inverters)
Frequently Asked Questions (FAQs)
What is an auto transformer?
What is the key difference between an Auto Transformer and an Isolation Transformer?
Auto Transformers have a single winding for input and output, offering no galvanic isolation but higher efficiency and lower cost.
| Feature | Auto Transformer | Isolation Transformer |
|---|---|---|
| Electronics isolation | No | Yes |
| Cost | Lower | Higher |
| Size | Compact | Larger |
When should an auto transformer be used?
Do you offer both copper and aluminium winding options?
Absolutely. Both are available based on current ratings, budget, and thermal requirements.
Can Rishab supply enclosed Auto Transformers?
Yes. We offer open type as well as cubicle-enclosed versions based on your installation requirements.
What power range do you support?
Auto transformers are available in a wide range of voltage combinations and power ratings. From 1 KVA to 1000 KVA in 3-phase, and 1 KVA to 100 KVA in single-phase configurations, depending on application requirements.