When to use isolation transformer
Isolation transformer is a special transformer mainly used for electrical isolation and protection of equipment and personnel safety. It is widely used in many situations. The following are some typical situations where isolation transformers are needed.
1. Medical equipment

Medical equipment has extremely high electrical safety requirements, and isolation transformers can prevent leakage current from causing harm to patients, especially in critical areas such as operating rooms and ICUs.
2. Industrial control system
In industrial environments, isolation transformers can prevent ground loop interference and ensure the stable operation of sensitive equipment such as PLCs and frequency converters.
3. Laboratory and precision instruments
Precision instruments in the laboratory require pure power, and isolation transformers can effectively isolate harmonics and noise in the power grid.
4. Electrical renovation of old buildings
Older buildings may have problems with poor grounding, and an isolation transformer can provide additional safety protection.
5. Temporary power use occasions
In temporary electricity use situations such as construction sites and outdoor activities, isolation transformers can reduce the risk of electric shock.
| Application scenarios | Main function | Typical power range |
|---|---|---|
| medical equipment | Prevent leakage current | 1-10kVA |
| industrial control | Eliminate ground interference | 5-50kVA |
| laboratory | Purify power supply | 3-15kVA |
| Building renovation | safe isolation | 10-100kVA |
| temporary electricity use | Prevent electric shock | 5-30kVA |
Key points for selecting isolation transformers
The following factors need to be considered when selecting an isolation transformer:
| Considerations | Description |
|---|---|
| Power capacity | Need to be greater than 1.2 times the total load power |
| Input and output voltage | Must match existing power and load requirements |
| Insulation level | Medical equipment requires Class I or Class II |
| working environment | Waterproof and dustproof required for outdoor use |
| Certification standards | Must comply with international standards such as IEC/UL |
Hot recent technology trends
According to the technical hot spots in the past 10 days, there are the following new trends in the field of isolation transformers:
1.Intelligent isolation transformer: Integrated IoT technology to remotely monitor operating status
2.High frequency isolation technology: Smaller size and higher efficiency
3.Wide input voltage design: Adapt to unstable power grid environment
4.Green environmentally friendly materials: Made of recyclable insulation materials
5.Modular design: Easy to maintain and upgrade
Precautions for safe use
Things to note when using an isolation transformer:
1. Check insulation resistance regularly
2. Avoid overload operation
3. Maintain good ventilation
4. Professional installation and maintenance
5. Pay attention to moisture and dust prevention
Isolation transformers are an important guarantee for electrical safety. Correct selection and use of isolation transformers can effectively prevent electrical accidents and protect the safety of personnel and equipment. With the development of technology, isolation transformers are developing in a smarter and more efficient direction.
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