China Isolation Transformer Manufacturer

Zhejiang Yibaling Power Equipment Co., Ltd. is a professional manufacturer of transformers and voltage regulators. It can produce isolation transformers, power transformers, and automatic voltage regulators.

Company Profile

We have over 3 years of experience in manufacturing transformers and voltage regulators for export. Yibaling transformers enjoy a warranty period of at least 2 years. ODM and OEM services are also available.
Yibaling's factory has over 10 engineers and technicians and a staff of over 60 people. The factory covers a complete production line from winding, silicon steel sheet cutting to transformer manufacturing.

Why Choose Us？

1. High Quality

Our Yibaling factory is renowned for its diverse product lines and strict quality control throughout the entire process (from the selection of raw materials to the meticulous production procedures and to the delivery of high-quality products).

2. Professional Team

Our company also has a professional team consisting of over 10 engineers and technical personnel, as well as a basic force of over 60 employees, which can cover every aspect from design to production and delivery. We are committed to providing customized services that fully meet your unique requirements for our clients.

3. Support ODM/OEM

We fully support the in-depth cooperation between ODM and OEM. Whether you need to brand standard products that are compatible with existing systems, or conduct new design and development from concept to finished product, our professional team can work closely with you.

4. Support Customization

We fully understand that standard products may sometimes not fully meet the unique requirements of your project. We are more than willing to offer you a precise solution through customized methods.

What is an isolation transformer?

An isolation transformer is a static electrical energy conversion device based on the principle of electromagnetic induction, which achieves electrical isolation between the primary and secondary windings.
Its core feature lies in the absence of a direct electrical connection between the primary and secondary circuits. Energy is coupled and transferred through the magnetic circuit, that is, the iron core, thereby establishing a high-impedance insulation barrier between the two circuits.
In simple terms, an isolation transformer is like adding a "manual water pump" to a faucet. The primary coil is like connecting to a large river, and the secondary coil is like connecting to the faucet.
The power used by the equipment is drawn from an independent "small pool" and isolated from the "large river" (public power grid), significantly reducing the risk of electric shock. Moreover, various noise in the power grid is also difficult to pass through the magnetic circuit, just like the sand and garbage in the river are filtered out to become pure water, making the output power to the equipment more stable.
This type of product is not only a voltage conversion device, but also a key basic equipment for achieving circuit isolation and ensuring equipment safety. Its role is more prominent in harsh industrial, medical and scientific research environments, and it is an indispensable part of building a reliable electrical system.

How Does an Isolation Transformer Work?

An isolation transformer is a device that first converts alternating current into a magnetic field and then uses the magnetic field to convert it back into alternating current on the other side.
This "electricity-magnetism-electricity" transmission process is like a physical firewall, which isolates direct potential dangers and interferences and only allows filtered pure energy to pass through.
When alternating current (such as 220V household power) enters the primary winding of the isolation transformer, this winding instantly becomes a rapidly changing magnetic electromagnet.
This magnetic field is firmly captured and transmitted to the secondary winding by the "core" made of silicon steel sheets in the middle, while filtering out the noise interference in the power grid and outputting pure current.

Product Function

The primary and secondary windings of isolation transformers manufactured by Yibaling are completely electrically isolated, preventing the formation of a circuit between them. Furthermore, due to the high-frequency rejection characteristics of the transformer core, high-frequency noise entering the secondary winding is significantly reduced. The use of isolation transformers to float the secondary winding relative to ground limits their application scenarios. Simultaneously, the low capacitive current to ground in isolation transformers prevents harm to humans, ensuring high safety performance.
The minimal capacitive coupling between primary and secondary windings suppresses interference from natural phenomena or grid noise. These design features also confer protective functions on equipment.
Another function is voltage transformation. While transformers inherently convert voltage levels, isolation transformers critically separate the ground planes of input and output circuits. For example, if a person touches a neutral wire and then comes into contact with the ground, no current will flow. However, if the person directly touches a live wire and then touches the ground, it could be life-threatening. With an isolation transformer, for the same voltage conditions, as long as both wires remain isolated from the ground, touching either wire and then touching the ground will not pose a safety hazard.

Application Scenarios

The core functions are twofold: ensuring safety and eliminating interference.
First, regarding safety. In factory maintenance areas, laboratories, or damp and potentially hazardous environments like mines and swimming pools, people are prone to electric shock. It acts as an “electrical insulation shield,” separating circuits that people may touch from the main power grid, fundamentally eliminating the risk of electric shock. In hospital operating rooms and ICUs, it becomes the “lifeline” for life support equipment, forming an independent power supply system. Even if the grid experiences minor issues, it never affects critical devices like ventilators and monitors.
Next, interference suppression. Many precision devices—such as laboratory instruments, factory PLC control cabinets, and data center servers—are highly susceptible to grid noise. Mild cases result in data errors, while severe cases cause malfunctions or system crashes. An isolation transformer acts as a “power purifier,” filtering out these grid-borne disturbances. In professional audio and broadcasting systems, it also eliminates that annoying humming noise, delivering cleaner sound.
Beyond that, it serves as a practical “adapter” and “isolator.” Many imported devices operate on 110V. Connecting them directly to our 220V grid risks burnout, but adding an isolation transformer safely steps down the voltage. In factories, equipment like variable frequency drives generates harmonic “garbage” during operation, polluting the entire grid. Installing an isolation transformer upstream acts like a “firewall,” containing the pollution locally and preventing it from affecting other sensitive equipment.
Thus, from life-saving safety protection to ensuring stable equipment performance, and solving practical voltage matching and system compatibility issues, they quietly play a critical role in every corner of modern power systems.

Our Factory

Yibaling Company is rooted in Wenzhou Liushi Town, China's electrical appliance capital. Leveraging this uniquely advantageous industrial environment, we have grown steadily from our inception to the present day. Today, we boast a stable team of over 20 technically proficient engineers and more than 50 experienced employees, driving increasingly robust company growth.
Thanks to our comprehensive production lines and robust manufacturing capabilities, Yibaling has become one of China's leading manufacturers and suppliers of isolation transformers. Our extensive product portfolio covers power transformers, isolation transformers, oil-immersed and dry-type transformers, as well as complementary power equipment like voltage stabilizers, frequency converters, and soft starters.
To ensure our technology remains cutting-edge, we annually send engineers for training abroad. They bring back the latest industry designs and processes to enhance our products. We firmly believe that continuously integrating new technologies is the key to making our products more reliable.

Request a Quote for an Isolation Transformer for Your Business Today

At Yibaling Factory, we aim to help you save costs by providing the highest quality products and services. Our transformers are made of premium materials and have been enhanced in durability throughout all design processes. In the long run, maintenance costs are reduced.
If you encounter equipment damage, our after-sales team can respond promptly to get you back up and running. If you need a transformer to stabilize your circuit in order to optimize your business performance and efficiency, please call 13576354577 to contact us or send an email (lassie@cnybldy.com) to get in touch with us.