La perte de base de transformateur a une grande relation avec la fréquence, il doit donc être conçu et utilisé en fonction de la fréquence d'utilisation, à savoir la fréquence de travail.
2 Puissance nominale :
Under the specified frequency and voltage, the transformateur can work for a long time without exceeding the output power of the specified temperature rise.
3 Tension nominale :
It refers to the voltage allowed to be applied to the transformateur coil, which shall not be greater than the specified value during operation.
4 Rapport de tension :
It refers to the ratio of primary voltage to secondary voltage of transformateur, which is different from no-load voltage ratio and load voltage ratio.
5 Courant à vide :
When the secondary of the transformateur is open circuit, there is still a certain current in the primary, which is called no-load current. No load current consists of magnetizing current (magnetic flux generated) and iron loss current (caused by core loss). For a 50Hz power transformateur, the no-load current is basically equal to the magnetizing current.
6 Aucune perte de charge :
It refers to the power loss measured at the primary level when the secondary of the transformateur is open circuit. The main loss is the iron core loss, followed by the loss (copper loss) caused by the no-load current on the copper resistance of the primary coil, which is very small.
7 Efficacité :
It refers to the percentage of the ratio of secondary power supply P2 to primary power supply P1. Generally speaking, the higher the rated power of the transformateur, the higher the efficiency.
8 Résistance d'isolement :
It indicates the insulation performance between coils of transformateur and between coils and iron core. The insulation resistance is related to the performance, temperature and humidity of the insulating materials used.
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