Today, I saw a factory dedicated transformer to the DC screen, is this necessary?It's high voltage distribution.
Generally speaking, since there is a high voltage room, there should be a low voltage room. If this is not the case, there will be a dedicated transformer to supply the DC screen. In most cases, the output will be 380V.
Is it power or communication?The power of the DC screen is introduced from the rectifier and battery.
Just go straight from the low pressure! The double circuit is to provide an alternate power supply to the DC screen, preferably two to the DC screen,You said the transformer is actually not necessary, DC screen is 380 input, go directly to it!
It comes from the low voltage cabinet, through an AC screen to the rectifier power supply, and then output DC to DC screen power supply.Low voltage cabinet output switch capacity is generally larger, need to be through the exchange screen redistribution.Double circuit mainly consider two road electricity, or all the city electricity, all the way oil machine input. Is the main communication security concerns. The power of the power supply, I think it will be considered.Low voltage cabinet is AC cabinet, direct inlet and DC screen... Frightful!
