1. Differential relay is the key protection for power transformer.

2. Especially on the failure causes due to voltage differential relay protection, reason and treatment methods leading to operation failure are introduce in detail.

3. An integrated - circuit transformer differential relay including secondary and fifth harmonics suppressor is designed.

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4. The paper also points out the direction of differential relay development.

5. The differential relay compares the currents and picks up when there is a difference in the two, which signifies a fault in the zone of protection.

6. Module components based current differential relay can eliminate the adverse effect of the distributed capacitive current.

7. Introduce function , Character of 7UT512 digital differential relay and applying it to differential protect on motor generator.

8. Differential Relay A differential relay is a protective device that is fed by current transformers located at two different series points in the electrical system.

9. Suggest a new - type line differential relay protection over multiplex fiber optic channel in real application.

10. A differential relay is a protective device that is fed by current transformers located at two different series points in the electrical system.

11. The sampling test results of the proposed scheme are presented and analyzed. The dynam ic simulation test results for the developed GPS based current differential relay are also introduced.

12. Large distributed capacitive current of Ultra-High-Voltage (UHV) transmission line depresses the sensitivity and reliability of traditional phase-segregated current differential relay.

13. This paper proposes the important of several questions of the current transformer (TA) and connect group of it's secondary circuit in the transformer differential relay.

14. This paper studies the performance of the module components based current differential relay with both theoretical analysis and EMTDC simulation.

15. According to the calculation result and features of low percentage interturn fault, the general characteristic selection for percentage differential relay of transformer is suggested.

16. So distinguishing between magnetizing inrush current and fault current correctly is the key to ensure transformer differential relay to operate credibly.

17. The uses, operating principle and main requirements of the current transformer for differential relay with high impedance were described.

18. The Model 24 Snap Acting Relay is a highly accurate differential relay with snap-acting switching.