1. The Aurora vulnerability is caused by the out-of-sync closing of the protective relays . 2. Protective relays can also be classified by the type of measurement they make.3. Behind the driver is case inside of which has an electric panel protective relays . 4. His work soon broadened to include transmission lines, distribution systems, and protective relays and switches. 5. A protective relay may respond to the magnitude of a quantity such as voltage or current. 6. A protective relay detects any imbalance in currents, and trips circuit breakers to isolate the device. 7. Systems for process control and protective relays used analog computation to perform control and protective functions. 8. Correct identification of terminals and wiring is essential for proper operation of metering and protective relay instrumentation. 9. Digital protective relays are primarily IEDs, using a microprocessor to perform several protective, control and similar functions. 10. In 1975, a 14-car Tait train ran between the Royal Park substations, to test a new protective relay device.
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