The DB-DL07 Power Automation and Relay Protection Experimental Device is a novel experimental device designed and developed by integrating teaching content from multiple professional courses in higher education institutions, including "Relay Protection," "Electrical Equipment,". The DB-DL07 Power Automation and Relay Protection Experimental Device is a novel experimental device designed and developed by integrating teaching content from multiple professional courses in higher education institutions, including "Relay Protection," "Electrical Equipment,". The DB-DL07 Power Automation and Relay Protection Experimental Device is a novel experimental device designed and developed by integrating teaching content from multiple professional courses in higher education institutions, including "Relay Protection," "Electrical Equipment," "Automatic Devices,". The Protection Relays product portfolio includes relay test equipment that are designed to test current pickup level, time-delay, and coordination of ground-fault protection. These ground-fault relay test units are used on substations, motor control centers, central distribution panels. Power System protection is crucial part of power station and substations safety which use protection relays and circuit breakers to isolate faulty parts or zones within the plant including Generator zone, Motor zone, Feeder zone, Bus zone, Transformer zone and Transmission Lines zone. Hence a. All 19 Engineering Science Kits are on Ex Stock meaning immediate dispatch to your labs For use with a selection of interchangeable relays units to allow students to investigate the theory and practice of electrical power system protection. If you have any questions or you'd like to discuss a. The following set of instructions will help you to operate the demonstration unit for AC Contactors and AC DC Relays with ease. Variable AC Voltage Source 0 - 250 V / 4 Amp. with Isolation Transformer having Tapping 0-50 V, 0-100 V, 0-250 V ( Tapping will be selected with switch). The power operation department uses microcomputer relay protection testers to regularly calibrate and maintain the.