9.1 Asymmetrical faults are quickly Dynamic protection test method & Line Protection Test Wiring+ 9.2 Basic Working Principle of Asymmetric Fault Successive Quick Action Protection+ 9.3 Principle of Transformer Longitudinal Differential Protection+ 9.4 Wiring Diagram and Protection Scope of Transformer Longitudinal Differential Protection+ 10.1 Test Wiring of Transformer Ratio Longitudinal Differential Protection+ 10.2 Technical Solutions for Transformer Longitudinal Differential Protection+ 10.3 Braking Characteristic Test of Transformer Ratio Differential Protection+