ABB TVOC-2 Arc Guard System plug-in communication module

ABB has launched a plug-in communication module for its TVOC-2 Arc Guard System. The communication module provides operators with real-time status updates and instant information on the location of any arcs. It can also be connected with the ABB Emax 2 smart circuit breaker and its cloud-based services.

Arc flashes represent a serious risk to people and equipment. Temperatures can reach up to 20,000°C and arc blasts can produce dangerous shrapnel. Conventional short circuit measures are too slow to protect fully against such events and the systems built into older switchgear are not able to protect the installation.

The TVOC-2 Arc Guard System is suitable for equipment with 24–48 VDC ranges as well as 100–240 V AC/DC. The plug-in communication module replaces the standard TVOC-2 HMI, sending data via Modbus RTU to any remote station or other intelligent switchgear technologies, such as ABB’s Emax 2 smart circuit breaker.

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.