Recently just completed a whitepaper on how a permently mounted voltage detector works.
http://graceport.com/voltage-indicator-how-does-it-work.cfm
If permanent electrical safety devices (PESD) are used as part of a Lock-out Tagout (LOTO) procedure, the requirements set forth in NFPA 70E 120.1/CSA Z462 4.2.1 ?Creating an Electrically Safe Work Condition? must be met. PESD?s allow for voltage verification without voltage exposure. PESD provide additional barriers in-between personnel and voltage and therefore decrease the opportunity for arc flash and shock incidents to occur. Understanding the application and the basic building blocks of permanently mounted electrical safety devices allows management to select and apply the right devices which will make their LOTO procedures safer and more productive.
A user of PESD needs to understand how a power system (high resistance ground, isolated ground systems, etc.) influence the functionality of these devices. The correct installation of PESD?s within an electrical enclosure also improves the reliability of the voltage testing equipment. Benefits include mechanical LOTO without voltage exposure and reduce PPE requirements for electrical LOTO.
http://graceport.com/voltage-indicator-how-does-it-work.cfm
If permanent electrical safety devices (PESD) are used as part of a Lock-out Tagout (LOTO) procedure, the requirements set forth in NFPA 70E 120.1/CSA Z462 4.2.1 ?Creating an Electrically Safe Work Condition? must be met. PESD?s allow for voltage verification without voltage exposure. PESD provide additional barriers in-between personnel and voltage and therefore decrease the opportunity for arc flash and shock incidents to occur. Understanding the application and the basic building blocks of permanently mounted electrical safety devices allows management to select and apply the right devices which will make their LOTO procedures safer and more productive.
A user of PESD needs to understand how a power system (high resistance ground, isolated ground systems, etc.) influence the functionality of these devices. The correct installation of PESD?s within an electrical enclosure also improves the reliability of the voltage testing equipment. Benefits include mechanical LOTO without voltage exposure and reduce PPE requirements for electrical LOTO.
