Training Centre - High Voltage Courses - Basic Protection
Basic Protection     1 day Course
Module 1
Fundamentals of Protection
The purpose of Protection Schemes
The need of Protection Schemes
Development of Simple Distribution
Systems
Basic Formulas:
Impedance
Reactance
Power and Power Factor
Vectors
Fault Levels
Fault Ratings
Basic Requirements of Protection Scheme
Basic requirements of protection
Stability
Speed and Operation
Sensitivity
Reliability
Back up protection
Zones of Protection
Systems Earthing
Neutral earthing
Solid Earthing
Resistance Earthing (NER)
Reactance Earthing
ARC Suppression Coil
Earthing via Voltage Transformers (NEC)
Tertiary Winding Transformers
Module 2
Protection Equipment
Introduction
Fundamental Principles of Protection and Components
Employed
Principles of Operation of a Relay / Circuit Breaker
System
Components of a Protective Scheme
Instrument Transformers
Purpose
Magnetisation Curve
Knee-Point Voltage
Metering CT's
Protection CT's
Polarity
Open Circuit of CT's
Secondary Impedance
CT Specification
Class X Current Transformers
Connection of Current Transformers
Burden
Current Transformer Identification
CT Polarity
CT Saturation
Obtaining the CT Mag Curve
Voltage Transformers
Capacitor Voltage Transformers
Connection of Voltage Transformers
Accuracy of Voltage Transformers
Module 3
Protection Replays
Protection Relays
Introduction
Basic Types of relays
Basic Operating Principles
Relay Characteristics
Module 4
Basic Secondary Injection Testing
The purpose of Protection Testing
The need of Protection Testing
Testing Methods
Primary Injection Testing
Testing Equipment
Circuit Breaker Testing
Timing (Speed Testing)
Contact Resistance (Static & Dynamic)
Insulation (Pressure Test)
Opening and Closing Coils
Testing Equipment