Isolation Transformers
A. Overview The isolation transformer is a safety transformer that isolates the output voltage from the grid voltage and has no risk of leakage and electric shock to the earth. B. FEATURES The toroidal transformer is used for isolated power supply, which has the characteristics of high power efficiency, small work loss, small Small voltage drop, small size, and transformer installation space can be designed according to requirements, and has good cost performance. C. Design Considerations 1. Low leakage current 2. High work efficiency 3. Low working loss 4. Small voltage drop 5. Thermal protection 6. Low vibration and noise 7. International Power Transformer Safety Standard 8. Power 10VA to 10KVA D. Temperature resistance level and product temperature rise Typically we design that over ambient of 25°C, product temperature rise is as follows: 1. Class A: 105°C, Temperature rise below 60°C 2. Class B 130°C, Temperature rise below 75°C 3. Class F 155°C, Temperature rise below 95°C 4. Class H 180°C, Temperature rise below 125°C 5. Or suitable temperature grade and suitable temperature rise E. Compliance Standard IEC61558 F. Design required parameters 1. Input voltage (V) 2. Working frequency (Hz) 3. Output voltage (V) 4. Output current (A) or output power (W) 5. Transformer installation space 6. Transformer installation and connection method 7. Requirements of temperature resistance level, efficiency, power consumption
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The Features of Single-Phase Isolation Low-Frequency Toroidal Transformer: (1) High efficiency. -It is product by high quality material and the type is compact. It can narrow the gap between the coil and the core. So the efficiency is above 95% (2) Low magnetic flux leakage. -The gap between core and coil is small and the coil is unformly. (3) Low noise and low temperature. -Due to the high quality material and the coil is unformly, the resistance loss and the fever is very low.
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Toroidal isolation transformer: Safety -- the secondary of the isolation transformer is not connected with the earth, and the toroidal isolation transformer's output is "floating ground". When people touch any line of the secondary of the isolation transformer, they will not get electric shock because they cannot form a current loop. Prevent power electronic devices from polluting the power grid - transformers have a great attenuation effect on high-frequency harmonics, so power electronic devices can avoid polluting the power grid.
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Toroidal isolation transformer: Safety -- the secondary of the isolation transformer is not connected with the earth, and the toroidal isolation transformer's output is "floating ground". When people touch any line of the secondary of the isolation transformer, they will not get electric shock because they cannot form a current loop. Prevent power electronic devices from polluting the power grid - transformers have a great attenuation effect on high-frequency harmonics, so power electronic devices can avoid polluting the power grid.
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Toroidal isolation transformer: Safety -- the secondary of the isolation transformer is not connected with the earth, and the toroidal isolation transformer's output is "floating ground". When people touch any line of the secondary of the isolation transformer, they will not get electric shock because they cannot form a current loop. Prevent power electronic devices from polluting the power grid - transformers have a great attenuation effect on high-frequency harmonics, so power electronic devices can avoid polluting the power grid.