We, Digital and Smart Grid Enterprises, offer the Hitachi COMBITEST System for Relay Testing, designed to support safe, efficient, and reliable testing of electrical protection systems. The COMBITEST system provides a convenient interface between primary equipment and protection relays, enabling secondary injection testing during commissioning, maintenance, and troubleshooting. It allows engineers to isolate protection relays from the primary circuit and perform testing without disturbing the existing wiring. Its safety features include automatic CT shorting during test handle insertion and interruption of trip circuits before CT shorting, helping ensure safe testing operations.
Our COMBITEST offering includes Hitachi Energy test switches such as RTXP 8, RTXP 12, RTXP 18, and RTXP 24, along with compatible test handles. These solutions support testing of protection relays, Intelligent Electronic Devices (IEDs), instrument circuits, and other substation protection applications. At Digital and Smart Grid Enterprises, we focus on providing reliable Hitachi COMBITEST solutions to meet the testing requirements of power utilities, industrial facilities, substations, and electrical infrastructure projects. We aim to help customers achieve accurate relay testing, improved operational safety, and dependable protection system performance.
