115 - Why do we need transformer protection
116 - Types of transformer faults
117 - Protection functions in transformer
118 - Corebalance leakage protection
119 - Combined Leakage and phase fault Protection
120 - Differential protection of transformers
121 - CT connections in transformer differential protection
122 - Problems and solutions with transformer differential protection
123 - Percentage Biased Differential relay
124 - Characteristics of biased relay
125 - Example 1 How to calculate CT ratios for differential protection
126 - Example 2 How to set differential relay settings
127 - Harmonic restraint relay
128 - Over fluxing protection VoltHertz relay
129 - Example 3 VF relay setting adjustment
130 - Over current Unrestricted earth fault relay
131 - Restricted earth fault protection
132 - Difference between REF and differential protection
133 - Oil temperature trip relay
134 - Winding temperature trip relay
135 - Pressure relief device PRD