What Is The Difference Between Medical Isolation Transformers And Conventional Standard Transformers?

In order to ensure the safety of medical staff, patients, and medical equipment, the safety and reliability requirements of medical isolation transformers are higher than many conventional standard transformers. The main differences are reflected in: ① different execution standards, medical isolation transformers follow higher national industry standards (GB 9706.1-2007) and international standards (IEC 60601-1:1988); ② The leakage current of medical isolation transformers is lower; ③ The creepage distance and air gap of medical isolation transformers are smaller; ④ The temperature rise of medical isolation transformers is lower; ⑤ The built-in overheat protection device is a standard configuration for medical isolation transformers.

The main types of medical isolation transformers are:

Safe grounding medical isolation transformer: using the isolation method of conventional standard transformers, that is, the safety shielding layer between the primary and secondary coils and the insulation layer inside each coil, which can maintain a small leakage current. If isolation fails, the AC input current will immediately flow to the ground through the shielding layer, and the overcurrent device will trip immediately.

Double/reinforced insulation medical isolation transformer: This type of medical isolation transformer has double or multiple insulation layers. If one insulation layer fails, the other insulation layers will continue to function and remain isolated.

Thanks to the good safety and reliability of medical isolation transformers, the installation and use of medical grade isolation transformers in non-medical equipment is becoming increasingly popular. Its benefits are obvious: ① its higher safety and reliability can reduce product safety testing time, thereby shortening product launch time; ② The equipment can adopt a low leakage current design; ③ Helps devices achieve smaller size, lighter weight, and lower power consumption.