How to choose industrial switching power supply? What are the precautions during use?

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How to choose industrial switching power supply? What are the precautions during use?

Time of issue:2022-04-22
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How to choose industrial switching power supply? What are the precautions during use?

As the application of industrial switching power supply is more and more extensive, and large-scale equipment has high requirements for the selection of industrial switching power supply. How to choose industrial switching power supply? What are the precautions in the use process? Let's take a look today!

1. How to choose industrial switching power supply?

1. First, select the appropriate input voltage specification;

2. Select the appropriate power. In order to increase the working life of the power supply, a model with an output power rating of 30% more should be selected.

3. Consider the load characteristics. The added load is a motor, a light bulb or a capacitive load. When the power is turned on, the current is large. It is necessary to select a suitable power supply to avoid overload. If the load is a motor, the voltage inversion should be considered during shutdown.

4. In addition, it is necessary to consider the temperature of the working environment of the power supply, and whether there are additional auxiliary cooling equipment. The power supply needs to derate the output when the ambient temperature is too high, and the derating curve of the ambient temperature to the output power.

5. Select various functions according to the needs of the application:

Protection function: over voltage protection (OVP), over temperature protection (OTP), overload protection (OLP), etc.

Application functions: signal function (normal power supply, power supply failure), remote control function, telemetry function, parallel function, etc.

Special functions: power factor correction (PFC), uninterruptible power supply (UPS)

6. Select the required safety regulations and electromagnetic compatibility (EMC) certification.

2. Matters needing attention in the use of high-power switching power supply!

1. Before the power supply is used, we must first determine whether the specifications of the input and output voltage are consistent with the nominal value of the power supply used;

2. Before powering on, carefully check whether the input and output leads are connected correctly to prevent damage to the customer's equipment;

3. To install it firmly, carefully check whether there is contact between the installation screw and the power board device, and measure the insulation resistance of the casing and the input and output to prevent electric shock;

4. Carefully check whether the grounding terminal is grounded to prevent safety during use and reduce certain interference;

5. The multi-output power supply is generally divided into main and auxiliary outputs. The main output has better characteristics than the auxiliary output. Generally, the output with the largest output current is the main output. In order to ensure the output load adjustment rate and output dynamics and other indicators, generally each channel is required to carry at least 10% load. If the auxiliary circuit is used instead of the main circuit, the main circuit must be properly dummy load. For detailed parameters, please refer to the specifications of the relevant models;

6. Remember not to switch on and off frequently, which will affect the life of the power supply;

7. The working environment and load level of the power supply will also affect its life;

8. Let the power supply manufacturers help select the power supply products suitable for the user's equipment;

9. If there are conditions, it is recommended that the switching power supply manufacturer should conduct professional design according to the equipment itself and the environment where the equipment is located.

Above we have summarized the purchase of industrial switching power supply and the precautions in the use process. If you have anything unclear, you can contact us and we will give you a detailed introduction!

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