ABB TVOC-2 Arc Guard System Communication Module

ABB has launched a plug-in communication module for its TVOC-2 Arc Guard System, providing operators with real-time status updates and instant information on the location of any arcs. By adding the communication module to the arc protection system, information regarding any trip and the status of the system travels faster, reaching the right people sooner.

Arc flashes represent a serious risk to people and equipment. Temperatures can reach up to 20,000°C, while arc blasts can produce dangerous shrapnel. Conventional short-circuit measures are often too slow to protect fully against such events and the systems built into older switchgear are not able to protect the installation. When connected with the ABB Emax 2 smart circuit breaker and its cloud-based services, the communications module is an enabling technology for the Internet of Things. This allows operators to take immediate action wherever they are, since time is a critical factor in minimising injury risks and property damage.

The guard system is suitable for equipment with 24–48 VDC ranges as well as 100–240 VAC/DC. The plug-in communication module replaces the standard TVOC-2 HMI, sending data via MODBUS RTU to remote station or other intelligent switchgear technologies. The TVOC-2 system can be equipped with up to 30 optical sensors, enabling a single unit to cover multiple switchboard cabinets. Once installed, the system is able to detect arc initiation and, in less than 1 ms, send a signal to an Emax 2 circuit breaker to open.