Purevolt manufactures single-phase isolation transformers for applications that require electrical separation between the incoming mains supply and connected equipment. An isolation transformer uses separate primary and secondary windings, transferring power magnetically while breaking the direct conductive connection between input and output. This separation can improve user safety in properly designed systems, help control common-mode electrical noise, and protect sensitive equipment from disturbances transmitted through the supply line.

The online range includes 1 KVA, 2 KVA, 3 KVA, 4 KVA, and 5 KVA single-phase isolation transformers with 230 V AC input and 230 V AC output. These models are suitable for laboratories, medical and diagnostic equipment, industrial control systems, communication devices, office electronics, test benches, audio-video equipment, and other loads that benefit from galvanic isolation.

What Is an Isolation Transformer?

A standard 1:1 isolation transformer keeps the nominal output voltage approximately equal to the input voltage while electrically isolating the secondary circuit from the primary circuit. Unlike an automatic voltage regulator or servo stabilizer, it is not intended to correct a continuously low or high supply voltage. Its primary function is isolation.

Because the input and output windings are physically separate, there is no direct electrical path between them. Depending on transformer design, earthing arrangement, shielding, installation quality, and the nature of the interference, this configuration can reduce the transfer of common-mode noise and provide an isolated supply for sensitive or service-related applications.

Available Single-Phase Isolation Transformer Ratings

1 KVA Isolation Transformer

A compact option for small electronic loads, laboratory instruments, communication equipment, desktop systems, audio devices, test setups, and low-capacity control circuits.

2 KVA Isolation Transformer

Suitable for medium electronic loads, small control panels, medical instruments, workstations, communication systems, and grouped devices whose combined requirement falls within the selected capacity.

3 KVA Isolation Transformer

Designed for applications such as diagnostic laboratories, IT equipment, audio-video processing, automation controls, scientific instruments, and other sensitive loads requiring higher capacity.

4 KVA Isolation Transformer

A practical choice for larger control systems, multiple instruments, commercial electronics, laboratory installations, and equipment groups requiring additional load margin.

5 KVA Isolation Transformer

Intended for small industrial systems, medical equipment, IT infrastructure, test facilities, office installations, and commercial applications with a higher combined load.

The final rating must be selected from the connected load, power factor, starting or inrush current, operating duty, and required spare capacity.

Key Features and Benefits

• Galvanic separation between input and output circuits
• Single-phase 230 V AC input and 230 V AC output models
• Separate primary and secondary windings
• Electrical-noise reduction for suitable applications
• Improved supply separation for sensitive equipment
• Durable construction for continuous operation
• Air-cooled, low-maintenance design
• Compact enclosed format for convenient installation
• Multiple KVA options for different load requirements
• Custom technical configurations available on enquiry

An isolation transformer should be used as part of a properly engineered electrical system. It does not replace earthing, circuit breakers, residual-current protection, surge-protection devices, or a voltage stabilizer where those are required.

Common Applications

Purevolt isolation transformers can be used with CNC control electronics, PLC panels, laboratory instruments, medical and diagnostic devices, telecom equipment, servers and network systems, printing-machine controls, packaging-machine electronics, audio recording systems, test benches, measuring equipment, security systems, and office electronics.

They are also useful during equipment servicing and testing, where an isolated source may be required to reduce direct reference to the incoming mains. The installation method and safety procedure must still be defined by a qualified electrical professional.

How to Select an Isolation Transformer

Start by listing every device connected to the transformer and calculating the total VA or KVA demand. Consider power factor, continuous load, startup current, transformer and power-supply inrush, future expansion, and the manufacturer’s recommended operating margin. Do not select capacity solely from the equipment’s watt rating when motors, compressors, large capacitors, rectifiers, or switch-mode power supplies are involved.

Confirm the required input and output voltage, frequency, phase, neutral and earthing arrangement, permissible voltage drop, ambient temperature, enclosure, cable termination, and whether an electrostatic shield or additional protection is needed.

Isolation Transformer Price in India

The category currently includes five single-phase models from 1 KVA to 5 KVA. Price varies according to capacity, winding and insulation specifications, enclosure, shielding, terminals, protection, taxes, delivery, and customization. Review the individual product page for the listed online price and specifications, or contact Purevolt for a technical quotation.

Choose the model that matches the real load and application rather than selecting only by price. Purevolt can assist with rating verification, voltage requirements, installation considerations, and custom isolation-transformer inquiries.