In electrical systems, we often hear a transformer called an isolation transformer. This kind of transformer is widely used in the electronic industry, industrial and mining enterprises, machine tools, circuit control power supply, safety lighting and indicator light power supply, and can play a role in protection, lightning protection, filtering, etc. So, do you know what isolation means in isolation transformer?
An isolation transformer refers to a transformer with complete electrical isolation between the input end and the output end. Its isolation means electrical isolation. The main principle is to use the electromagnetic induction principle of the transformer to isolate the input and output circuits through magnetic field coupling. Because its secondary is not connected to the earth and has no potential difference, it plays the role of isolation and is a safe power supply.
In addition to serving as a safe power supply, the isolation transformer also plays a role in lightning protection and anti-interference:

During lightning weather, the power supply system is vulnerable to lightning strikes, causing voltage transients that may cause equipment damage or even failure to work properly. At this time, the input end and the output end can be completely isolated through an isolation transformer to prevent lightning from hitting the input end, thereby improving the lightning protection performance of the power supply system.

There is no electrical connection between the input and output circuits of an isolation transformer, and energy is transferred only through the magnetic field of the transformer. It can effectively isolate the electrical interference between the input terminal and the output terminal and ensure the stability of the voltage and current at the output terminal.

Isolation transformer selection and precautions

When selecting an isolation transformer in a power system, the following aspects need to be considered:

Rated power: The rated power of the isolation transformer should be greater than the rated power of the power supply system to ensure the normal operation of the power supply system;
Rated voltage ratio: The rated voltage ratio of the isolation transformer should match the voltage of the power system to ensure the voltage stability of the power system;
Insulation level: The insulation level of the isolation transformer should match the insulation level of the power system to ensure the safety performance of the power system;
Rated frequency: The rated frequency of the isolation transformer should match the frequency of the power system to ensure the normal operation of the power system;
Overall dimensions: The overall dimensions of the isolation transformer should be suitable for the space of the installation site to ensure the stability and reliability of the installation;
Usage environment: The usage environment of the isolation transformer should comply with the usage requirements of the product, such as temperature, humidity, altitude, etc.

When using it, the following precautions are required:

Installation location: The isolation transformer should be installed away from lightning-prone areas to avoid being affected by lightning;
Grounding: The isolation transformer should be properly grounded to ensure the safety performance of the power system;
Maintenance: The isolation transformer should be inspected and maintained regularly to ensure its normal operation and long life;
Protective measures: The isolation transformer should be equipped with corresponding protective measures, such as lightning protection devices, over-current protection, over-voltage protection, etc., to ensure the stability and safety performance of the power system;

Precautions for use: When using an isolation transformer, relevant instructions and operating procedures should be followed to ensure the normal operation and long life of the power system.

When buying an isolation transformer, choose Shanghai Leilang Electrical Appliances

Shanghai Leilang Electric has many years of experience in the design, production and manufacturing of isolation transformers. Relying on its rich experience in power equipment manufacturing, its own strong design capabilities, sophisticated manufacturing processes and advanced production management levels, the company is dedicated to providing excellent product quality and perfect after-sales service to my country's electric power industry and the majority of institutions. Its products are exported to the world. Nearly 50 major countries, we warmly welcome friends from all walks of life to visit the company and purchase related electrical products!