Selection Of Waterproof Power Supply And Precautions When Using It

1. Matters needing attention when choosing a waterproof power supply

1) Select the appropriate input voltage specification;

2) Select the appropriate power. In order to increase the life of the power supply, you can choose a model with 30% more output power rating.

3) Consider the load characteristics. If the load is a motor, a light bulb or a capacitive load, the current will be relatively large when the power is turned on, and an appropriate power supply should be selected to avoid overload. If the load is a motor, the voltage backflow during shutdown should be considered.

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

5) Select various functions according to the application requirements:

Protection functions: Over Voltage Protection (OVP), Over Temperature Protection (OTP), Over Load 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) Consider the problem of installation space, and choose a waterproof power supply of appropriate size according to the actual installation space.

2. Precautions for using waterproof power supply

1) Before using the power supply, first determine whether the input and output voltage specifications are consistent with the nominal value of the power supply used;

2) Before powering on, check whether the input and output leads are connected correctly, so as not to damage the user equipment;

3) Check whether the installation is firm, whether the installation screws are in contact with the power board components, and measure the insulation resistance between the shell and the input and output to avoid electric shock;

4) In order to ensure the safety of use and reduce interference, please ensure that the ground terminal is reliably grounded;