What is the protection range of transformer overcurrent protection?

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The last edit to this post was made by It will be more tomorrow_bZzMU on 2020-2-14 at 21:22. The protection range of transformer overcurrent protection refers to the components that are protected by the overcurrent protection on each side. The backup protection of a transformer is primarily used to protect against external faults of the transformer. It can also serve as backup protection for internal faults of the main transformer, as well as backup protection for feeder distance protection. High-voltage side: High-voltage side overcurrent (low-voltage start), overload protection, voltage loss protection. Low-voltage side: Low-voltage side overcurrent (low-voltage start). Like all power systems, to protect electrical equipment and personnel, photovoltaic systems must also be equipped with overcurrent protection devices such as circuit breakers or fuses. They come in a wide variety of types and with complete specifications. When designing with overcurrent protection, it is essential to ensure that the rated current of the DC components meets the system’s operating conditions, particularly the maximum output current of the solar cells. Different overcurrent devices are suitable for various system designs and rated powers, which will not be discussed in detail here. However, a general design principle is to use high-fusing resistance wires or appropriate circuit breakers when wiring, in order to keep the current below the conductivity bottleneck at any point in the circuit, thereby preventing overload or short circuits. The overcurrent protection device for the battery should be installed as close as possible to prevent arcing in the circuit from igniting the hydrogen released from the battery. Each series-connected solar cell circuit should be equipped with independent overcurrent protection devices.