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HD-3A Energy-saving quota three-phase power supply protector

2016-09-24 11:52  
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HD-3A Energy-saving quota three-phase power supply protector
Current transformer H11-3 needs to be made by yourself. It can choose transformer core which is not less than 2W, and the secondary should be wound firstly. It uses Φ0.12mm enameled wire with around 1000 turns. Primary uses Φ1 ~ 4mm plastic wire with around 2-3 turns. It also can use finished CT. Finished current transformer has high induced voltage.