Como prevenir interrupções na produção e estragos nos produtos electrónicos, devido a sobretensões?

Schneider Electric

Como prevenir interrupções na produção e estragos nos produtos electrónicos, devido a sobretensões?

Publicado: 24 de fevereiro de 2014 · Categoria: Cadernos técnicos

Deste documento

Control Panel Technical Guide How to prevent machine malfunctions and electronic damage due to voltage surges? Contents Introduction 1 The Surge Protection Devices 2  The Surge Protection Devices 3 What does an SPD look like? How does an SPD work? 4-7 8-9 9 9 applications 10-13 AC power circuits Focus on cabling rules of AC SPD in a machine control panel Very low voltage circuits 11 12 13 Selection guides 14-15 To select the SPD according to circuit voltage To select contactors and suppressors for attenuation of switching surge 15 15 3 Machines face surges every In case of failure, is the righ Surges are hardly observable, they have multiple consequences on machines and process. Some are serious with risks of injury, others are only material. In many cases the users have difficulties to investigate the causes. Some relevant situations Unexpected stops Stops of ventilation, elevator, lighting causing risks for people. Stops of other equipments causing overheating, overcooling, flooding with damage to the installation, the building. Stops on machines causing production loss, etc. Strange behavior The appropriate machine controls are sometimes unpredictable causing erratic information on alphanumeric display, engine runaway with mechanical breakdown as worse consequences. Electrical and electronic breakdown Electronic devices are usually sensitive to surges conducted by supply lines, sensors and communication lines. Overvoltage can destroy electronic components or cause...