GE MiCOM P40 Agile Technical Manual page 8

Contents
Chapter 9 Current Transformer Requirements
1 Chapter Overview
2 CT requirements
2.1 Phase Overcurrent Protection
2.1.1 Directional Elements
2.1.2 Non-directional Elements
2.2 Earth Fault Protection
2.2.1 Directional Elements
2.2.2 Non-directional Elements
2.3 SEF Protection (Residually Connected)
2.3.1 Directional Elements
2.3.2 Non-directional Elements
2.4 SEF Protection (Core-Balanced CT)
2.4.1 Directional Elements
2.4.2 Non-directional Elements
2.5 Low Impedance REF Protection
2.6 High Impedance REF Protection
2.7 High Impedance Busbar Protection
2.8 Use of Metrosil Non-linear Resistors
2.9 Use of ANSI C-class CTs
Chapter 10 Voltage Protection Functions
1 Chapter Overview
2 Undervoltage Protection
2.1 Undervoltage Protection Implementation
2.2 Undervoltage Protection Logic
2.3 Application Notes
2.3.1 Undervoltage Setting Guidelines
3 Overvoltage Protection
3.1 Overvoltage Protection Implementation
3.2 Overvoltage Protection Logic
3.3 Application Notes
3.3.1 Overvoltage Setting Guidelines
4 Rate of Change of Voltage Protection
4.1 Rate of Change of Voltage Protection Implementation
4.2 Rate of Change of Voltage Logic
5 Residual Overvoltage Protection
5.1 Residual Overvoltage Protection Implementation
5.2 Residual Overvoltage Logic
5.3 Application Notes
5.3.1 Calculation for Solidly Earthed Systems
5.3.2 Calculation for Impedance Earthed Systems
5.3.3 Neutral Voltage Displacement (Nvd) Protection Applied To Condenser Bushings (Capacitor Cones)
5.3.4 Setting Guidelines
6 Negative Sequence Overvoltage Protection
6.1 Negative Sequence Overvoltage Implementation
6.2 Negative Sequence Overvoltage Logic
6.3 Application Notes
6.3.1 Setting Guidelines
7 Sensitive Overvoltage Supervision
7.1 Sensitive Overvoltage Implementation
7.1.1 Sensitive Overvoltage Filter Mode
7.2 Sensitive Overvoltage Logic
7.2.1 Sensitive Overvoltage Operation Logic
7.2.2 Sensitive Overvoltage Filter Mode Logic
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