TDK-LAMBDA Power Supply May Exist In Danger And Safety Operation Guide

This section will exploreTDK-Lubda's potential reasons for smoking and fire.Although these power supply attaches great importance to security during the design and manufacturing process, because they run under high voltage and large current conditions, they are wrong.It may cause abnormal heat and smoke, and even fire even under extreme circumstances.

Make sure to use within the design of the power supply

The service life of TDK-LAMBDA power is mainly affected by the life of electrolytic capacitors.When the electrolytic container aged, the internal resistance increased, resulting in abnormal heat and internal pressure accumulation, and eventually promoted the opening of the safety valve.This will cause the gaseous electrolyte to renew, and the liquid electrolyte leaks from the end area.

Typical case Long -term use leads to electrolytic capacitors denseThe seal is ineffective, the internal electrolyte leakage.This kind of leakage will beThe conductivity path between the circuit between the PCB board, which causes sparks and smoke.

Preventive advice Replace the power or maintain it before the electrolyte container reaches its service life.The expected life of our products can be on the websiteThe reliability data part is found.Preventing the use of high -temperature environments in high temperature environments will significantly shorten the life of electrolytic capacitors.When the ambient temperature increases by 10 ° C, the life expectancy of electrolytic capacitors will be reduced by about 50%.When the electro -electrocomputer is aging to a certain degree, abnormal fever may occur and trigger the safety valve opening (see before).Be sure to keep the working environment of the power supply appropriate.

Fault instance The air circulation around the power supply or the environmental temperature exceeds the specifications, resulting in an aging of electrolytic containers in advance.The electrolyte leaks andThe short -circuit path is formed on the PCB board, which produces smoke.

Preventive measures When designing the power supply structure, ensure that there are enough convection and cooperative cooling measures around the power supply.The power supply shall be used within the temperature range specified by its output reduction characteristic curve. Prevent conductive impurities and pollutants invade The conductive impurities and dust attached to high -voltage areas (hundreds of volts) may form an abnormal high -voltage path, which causes electro -sparks or electrical marks, causing abnormal fever, which causes fire or smoke. Fault case The mix of metal fragments, dust and liquid inside the power supply causes abnormal heat in high -voltage areas to burn the substrate.The accumulation of dust and electrical marks may causePCB board smoke or burns.

Preventive advice Choose the right installation environment to prevent impurities from entering the power supply.If the temperature difference between the installation environment is large, measures should be taken to prevent knotting.Even if it is a non -conductive substance, it may become conductive substances after absorbing the water in the air. Therefore, it is recommended to regularly repair and internal cleaning to prevent the fault of the electrical foreign body.