The guide rail is used to install some electrical devices such as circuit breakers, contactors, and thermal relays to play a fixed role, while the DR-Din rail power supply plays a protective role by monitoring the voltage, current, and temperature of the equipment in real-time. DR-Din rail power supplies may sound unfamiliar to many people, but they are also very common in our daily lives, but they have not been noticed. Now let us introduce in detail how to choose the DR-Din rail power supply.
Here is the content list:
Check the power supply voltage
Choose the right environment
Power selection
Choose the right kind
Check the power supply voltage
The DR-Din rail power supply specifications that the rail power supply can use are 110VAC, 220VAC, and 380VAC. Therefore, before turning on the power supply, carefully check whether the connected voltage and the input voltage of the power supply are correct and consistent. Do not load before powering on for the first time. First, check whether the output voltage of the DR-Din rail power supply is the same as the power supply of the connected equipment to avoid damage to the connected equipment. Before using the power supply, please confirm whether the ground wire is properly connected, and mark the position of the specific power ground wire in the figure.
Choose the right environment
The power supply should be placed in a well-ventilated place with fast heat dissipation before and after use. The determination of the output current of the DR-Din rail power supply is closely related to the environment. It is determined based on the rated standard current of the rail power supply provided by the equipment or the average current value measured by a multimeter. And in the case of high ambient temperature, poor airflow conditions, and excessive inductive load, 20-30% more current margin must be prepared.
Power selection
The input power of the rail power supply is generally determined by the input power of the DR-Din rail power supply, which determines the rated power of the equipment supplied. However, when the specific rated power of the supplied equipment is not clear, certain modifications can be made, and the power can be obtained based on the product of the rated current and voltage of the supplied equipment, that is, current x voltage. It should be noted that when the user selects the power supply, it should be greater than 15-30% of the actual power and peak power.
Choose the right kind
The number of DC circuits output by the rail power supply is determined. The DR-Din rail power supply usually has the output of the S-single group, D-double group, T-three group, and Q-four group circuit. The DR-Din rail power supply has protection functions such as overcurrent, overheat protection, and fan heat dissipation, so it is necessary to select the most suitable one according to the actual usage, to enhance the reliability and stability of the system engineering. There are many types of DR-Din rail power supplies, including industrial iron shell type, rail type, LED outdoor rainproof type and waterproof type, etc. Please choose according to the actual daily application requirements.
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