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13 2023-07

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　　① Single direct starting motor melt rated current=(1.5-2.5) × Rated current of the motor.

　　② Total protection melt rated current of multiple direct starting motors=(1.5-2.5) × The sum of the currents of each motor.

　　③ Reduced voltage starting motor melt rated current=(1.5-2) × Rated current of the motor.

　　④ Rated current of winding motor melt=(1.2-1.5) × Rated current of the motor.

　　⑶ Rated current of low-voltage side melt of distribution transformer=(1.0~1.5) × Rated current on the low-voltage side of the transformer.

　　(4) Rated current of parallel capacitor bank melt=(1.43-1.55) × Rated current of capacitor bank.

　　(5) Rated current of welding machine melt=(1.5-2.5) × Load current.

　　Rated current of electronic rectifier element melt ≥ 1.57 × Rated current of rectifier components.

　　Explanation: The numerical range of the rated current of the melt is to adapt to the standard component rating of the melt.

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