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Precision AC Voltage Conversion

Step-Up / Step-Down Transformers

High quality single-phase and three-phase Step-Up and Step-Down Transformers designed to increase or decrease utility AC voltage for imported industrial machinery, specialized plant electrical loads, and export equipment.

Step-Up / Step-Down Transformer
Phase
1-Phase & 3-Phase
Winding
99.9% Copper
Insulation
Mylar / Nomex / Class F
Efficiency
> 97%
Cooling
Air / Oil Cooled
Duty Cycle
Continuous 24x7

What is a Step-Up / Step-Down Transformer?

A Step-Up or Step-Down Transformer is a voltage conversion transformer designed to adjust incoming utility supply voltage to match specific machinery operating requirements. A Step-Up transformer increases secondary output voltage relative to primary input voltage (e.g. stepping up 220V to 400V or 480V). Conversely, a Step-Down transformer reduces secondary output voltage (e.g. stepping down 415V to 200V, 110V, or 24V). These transformers feature heavy-duty copper windings, Mylar/Kraft paper/Nomex inter-turn insulation, and high-permeability CRGO steel cores for seamless voltage adaptation.

Applications

Imported Industrial Machinery
Matching US/Japanese/European machine voltage standards (e.g. 200V, 208V, 460V, 480V) to Indian 415V mains.
Export Equipment Testing
Stepping up/down factory testing power to verify machinery before overseas customer dispatch.
Commercial Facilities
Adapting internal building voltages for specialized HVAC, lighting, and kitchen equipment.
Renewable Energy Systems
Stepping up solar inverter AC outputs to plant or distribution grid voltage levels.

Technical Specifications

Parameter Specification Details
Configuration Type Delta / Star / Auto Transformer
Input Voltage Window 230V Single Phase / 400V–415V 3-Phase (Or custom as requested)
Output Voltage Range 110V–240V 1-Phase / 200V, 380V, 400V, 415V, 480V 3-Phase (Model dependent)
Winding Material 99.9% Electrolytic Grade Copper Winding
Insulation Materials Mylar, Kraft Paper, Nomex, Varnish (Class F / Class H)
Core Material High-grade CRGO (Cold Rolled Grain Oriented) Lamination
Losses at No Load Below 2%
Load Regulation < 4%
Insulation Resistance Minimum 1000 MΩ (@ 500V DC)
Breakdown Strength Withstands 2.5 kV for 1 minute
Cooling Options Air Cooled / Oil Cooled
Duty Cycle 100% Continuous 24x7 Duty Cycle

Engineered For Your Power Requirements

Hindustan Stabilizers custom builds Step-Up and Step-Down Transformers for any voltage ratio combination (such as 415V to 200V, 415V to 480V, 220V to 380V, or 110V step-downs). We manufacture both auto-transformer and double-wound isolation configurations in Air Cooled or Oil Cooled enclosures.

Why Hindustan Stabilizers

Industrial Engineering
Engineered turns-ratio calculation and high thermal insulation for continuous industrial operation.
Application-Focused Solutions
Custom designed to power imported Japanese, US, or European CNC and manufacturing lines.
Quality Components
100% electrolytic copper windings and Nomex/Mylar insulation for lowest operating heat.
Technical Support
Over 30 years of manufacturing experience assisting with voltage transformation calculations and installation.

Frequently Asked Questions

What is the difference between a Step-Up and a Step-Down Transformer?
A Step-Up Transformer increases secondary output voltage above primary input voltage. A Step-Down Transformer decreases secondary output voltage below primary input voltage.
Why do imported machines require a Step-Down or Step-Up transformer?
Machinery manufactured in the USA (480V/208V), Japan (200V), or Europe (380V) operates on different voltage standards than Indian 415V mains. A transformer converts Indian line voltage to match the machine's exact rating.
Can a Step-Up / Step-Down transformer be built with isolation?
Yes. We manufacture both standard auto-transformer models and double-wound isolation step-up/down models for complete electrical noise isolation.

Need the Right Transformer for Your Application?

Tell us your machine's required operating voltage, kVA load rating, input utility voltage, and phase. Our engineers will recommend the exact transformer.