Everyone wins when a maintenance worker is able to approach an electrical enclosure and obtain instant information on every voltage source feeding into that enclosure—without opening a panel door. This ability to identify arc flash ratings, verify voltage states and locate all voltage sources from outside an electrical panel greatly reduces electrical risks to employees, increases profits to employers and promotes compliance to NFPA 70E. Grace Engineered Products, offering thru-door electrical safety, has combined two of their electrical safety devices into one, easy-to-use, interactive, thru-door, functioning voltage label that accomplishes all three of those key objectives.
NFPA 70E requires voltage sources to be labeled on the outside of all electrical enclosures. In the past, these labels merely conveyed stagnant information that still required personnel to open panel doors to identify, verify and locate all voltage sources—thereby putting workers at risk. Now, the concept of an interactive, functioning voltage label provides personnel with the ability to both visualize and verify the state of each electrical energy source feeding the enclosure—with the panel doors closed.
The new R-1A0033W-NPLPH assembly, known as the Interactive Functioning Voltage Label, consists of a Voltage Vision R-3W voltage indicator, three ChekVolt R-1A voltage portals and a polycarbonate UV-rated nameplate. The panel mount assembly provides two independent means of checking for the absence or presence of voltage with the control panel still closed. Field retrofits are simple because the nameplate includes pilot hole drilling locators. The ChekVolt R-1A mounts in a 1/2 inch hole and the Voltage Vision R-3W mounts in a standard 30mm pushbutton hole. For disconnect enclosures, R-1A0033W-NPLPF is designed to mount on a flange rather than a door.
ChekVolt extends a voltage point to the outside of an electrical enclosure so that a non-contact voltage detector can be used to check for ac voltage without access to the inside of the enclosure.
Voltage Vision is a UL-listed device that functions like a permanently mounted voltmeter that monitors both ac and dc voltage between each phase and phase-to-ground. When a phase is lost, the LED's corresponding to that phase will go out—giving a visual indication of a problem outside of the panel.
Keeping the panel doors closed is the best way to prevent devastating electrical accidents. The Interactive Functioning Voltage Label provides a way to enhance compliance to NFPA 70E and increase employee productivity.