As a crucial component of the power system, the long-term safety and stability of the small power distribution units (SPDU) are directly related to the normal operation of the entire lighting system. The following are the key points for identifying long-term operational hazards in small power distribution units (SPDU)es:

Appearance and identification: Firstly, check whether the appearance of the distribution box is intact, without rust, deformation or damage. At the same time, confirm whether there are prominent safety warning signs posted on the door of the distribution box to remind operators to pay attention to safety.

Safe passage and operating space: Ensure that there are sufficient safe passages and operating spaces around the distribution box, and no flammable, explosive, or corrosive materials are piled up to prevent safety hazards.

Sealing of inlet and outlet: Check whether the inlet and outlet of the distribution box are tightly sealed, and use fireproof adhesive or fire-resistant partitions to block them to prevent external substances from entering.

Grounding and cross connection: Verify whether the metal box door and metal box body of the distribution box have been effectively grounded and cross connected through braided soft copper wire, to avoid the electrical box shell being charged under fault conditions.

Electrical component inspection: Regularly check whether circuit breakers, contactors, and other electrical components are working properly, whether there are any abnormal sounds or odors, and ensure the reliability of the internal components of the distribution box.

Wires and terminal blocks: Check whether the wires in the distribution box are arranged neatly and there is no twisting phenomenon. At the same time, confirm whether the connection between the terminal blocks and the busbar is firm, without looseness or corrosion.

Environmental adaptability: The distribution box should be placed in a dry and well ventilated environment to avoid damage to the internal components of the distribution box caused by humidity and high temperature.

By conducting a detailed hazard investigation of the small power distribution units (SPDU), potential safety issues can be identified and addressed in a timely manner, ensuring the stable operation of the lighting system and providing safe and reliable power supply for people's daily lives.