Voltage transformer vv wiring form features

The vv wiring method is suitable for systems where the neutral point is not grounded or grounded via the arc suppression coil. It has the advantage of saving one single-phase voltage transformer and reducing the grounding current in the system to avoid overvoltage. Two transformers are connected to the phase voltages Uab and Ubc, respectively. However, the primary winding cannot be grounded. For safety reasons, the secondary winding of phase B is grounded. This type of wiring can only obtain the line voltage and the phase voltage relative to the neutral point of the system, and the relative ground voltage cannot be obtained.

Outdoor LED Curtain Display

Specific features of Grille Curtain LED Display

What is grille curtain LED Display Screen? grille curtain LED Display screen is made up of several pieces single led strip. It is a LED screen which looks like a grille and now become more and more popular among the LED industry. It can be called like strip Led screen. Since it shows us a hollowed-out , meshy visual effect, so LED display experts also call it mesh LED screen. This type of outdoor led screen mainly apply for wall of outdoor, glass wall, top of buildings, Column ads and led Curtain and so on.

Cross-time design of grille curtain LED breaks the limitation of traditional LED display for buildings and walls, makes the assembly project easier and selective. Maybe that is the reason why it can be used widely among all the field. Now let`s CATA editor introduce some technical advantage and how it makes the led screen project easier.

Grille curtain LED Screen technical feature❶ Light weight and anti-wind

Grille curtain LED Screen technical feature❷ High energy efficiency and low consumption

Grille curtain LED Screen technical feature❸ High integrate design

Grille curtain LED Screen technical feature❹ IP67 protection level

Grille curtain LED Screen technical feature❺ easy assembly and maintenance



Led Video Curtain,Large Led Curtain Screen,Media Led Grid Display,Custom Curtain Led Display

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