1. Electromagnetically Sensitive Equipment
Devices sensitive to electromagnetic interference (such as high-frequency electronic equipment and precision instruments) may have their normal operation affected by electromagnetic interference from conventional surge protectors so conventional surge protectors are not suitable for them.
2. High-Frequency Circuit Equipment
For high-frequency circuit equipment like frequency converters and inverters conventional surge protectors cannot effectively handle transient overvoltages generated during operation and fail to provide effective protection. They need specially designed protection devices and should not use conventional surge protectors.
3. Switchgear with Limited Space or Poor Heat Dissipation
Switchgear with insufficient internal space or poor heat dissipation will have further space congestion and hindered heat dissipation when connected to a surge protector which may lead to overheating and even malfunction so surge protectors are not suitable for them.
4. High-Current Equipment
Large generators transformers and other high-current equipment generate high current peaks during operation. Conventional surge protectors cannot withstand these current peaks and cannot meet protection requirements. They need specialized protection solutions and should not use conventional surge protectors.
5. Equipment Subject to Strict Safety Regulations
Some industries have explicit regulations prohibiting the installation of additional electronic components inside equipment and such equipment must comply with specific safety standards. Surge protectors are additional electronic components that do not meet regulatory requirements so they should not be connected to such equipment.