The rail-mounted power supply is a type of power supply that uses modern power electronics and the time ratio of the switching tube’s on and off states to maintain a stable output voltage. With the development of power electronics, it is also constantly evolving. Currently, rail-mounted power supplies, characterized by their small size, light weight, and high efficiency, are applied to almost all electronic devices. It is a power supply mode that is developing rapidly in today’s electronic information industry. This kind of power supply, which has many advantages such as miniaturization, light weight, a wide input voltage range, and less heat consumption, has developed rapidly in recent years and is also developing rapidly in the electronics industry. So, how should we use the rail-mounted power supply correctly?
1. Before powering on the power supply, check whether the connected voltage is consistent with the input voltage of the power supply.
2. Before the first power-on, do not connect the load first. Check whether the output voltage of the power supply is consistent with the power supply of the connected device to avoid damaging the connected device.
3. Connect the ground wire properly before using this power supply. The grounding position of this type of power supply is indicated in the diagram.
4. Place the power supply in a well-ventilated area during use.
5. Determination of the output current: Determine it according to the rated current of the powered device or the average current value measured by a multimeter. In situations such as an ambient temperature, poor air circulation, or inductive loads, reserve an additional current margin of 20% to 30%.
6. Determination of the input power: The rated input power depends on the rated marked power of the powered device. When the rated power of the powered device is unknown, it can be obtained by multiplying the rated current and voltage of the powered device (current × voltage = power). When users select the power of the power supply, it should be 15% to 30% greater than the actual power consumption and the peak power.
7. Determination of the number of output DC circuits: Conventional ones have up to four output circuits, which should be determined according to the powered device.
8. It has protection functions such as over/under voltage protection, overcurrent protection, overheat protection, and fan cooling. Please make selections according to the actual usage situation to enhance the stability of the system project.