차단 용량 의 퓨즈 필요 to be greater than the expected short-circuit current in the protect circuit. The expected short-circuit current can be calculated simply by passing the power battery voltage and the wire resistance of the load circuit, the internal resistance of the power supply, and the number of connecting terminals or transfer points. Line resistance and power supply internal resistance can be obtained through 계산 또는 측정. The 연결 터미널 is 일반적으로 3~5mΩ.
보통, there is still a difference between the calculated expected short-circuit current and the actual short-circuit current value. when the calculated expected short-circuit current is close to the breaking capacity of the fuse, it needs to be verified through testing.
이전 테스트 및 검증, 그것 이 필요 to 평가 위치 where 단락 회로 is 가능성 to 발생 in the 전체 load loop, then set a short circuit point at that location, connect the corresponding equipment, and measure the voltage waveform at both ends of the fuse during the short circuit process, the actual short circuit current of the entire load loop, and other parameters.
