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The purchase of DC conversion power supply should be cautious(2)


(3) Before the installation is completed and the power is turned on, the wiring on each terminal should be checked and checked again to ensure that the input and output, AC and DC, single-phase and multi-phase, positive and negative, voltage and current values are correct. Prevent the occurrence of reverse and wrong connections.
(4) For high-power power supplies, there are generally two or more "+" output terminals and "-" output terminals. In fact, they belong to the same output electrode, but for the convenience of user wiring, they are connected together internally.
(5) The module power supply is not allowed to work at full load for a long time. The utilization rate of linear power supply should be controlled within 60%; the utilization rate of switching power supply should be controlled within 80%, otherwise it may cause early artificial failure of module power supply.

1. Flame retardant properties can not be ignored

Mechanical equipment will generate a lot of heat energy during use, especially in the current market competition is intensifying, in order to improve their market competitiveness, many companies continue to strengthen production, 24-hour production has become the norm, if the flame retardant power module Insufficient performance, long-term work may cause the spontaneous combustion of the power module, which may bring huge losses to the enterprise. Therefore, the flame retardant performance must not be ignored when purchasing a DC conversion power supply otherwise it is very likely that the gain will outweigh the gain.

2. Insulation needs to be considered

power module

The advent of the era of intelligence has led to more and more electrical equipment. In order to protect the reputation of the company and ensure the safety of consumers, the insulation problem must be considered when purchasing power modules. If the insulation of the power module is insufficient, it will be used for a long time. There may be leakage of electricity. Once a consumer is injured, it will have a serious impact on the brand image of the company, and it may even make a company slump and disappear from the market completely.