SIPROTEC 5 & DIGSI 5 Online Training

29 – 31 January 2026

Prerequisites:

When everyone starts around the same level, the class can learn together more smoothly. So, please complete all prerequisite training packages to be eligible for enrollment in this online training.

COURSE CONTENT
INTRODUCTION TO POWER SYSTEM PROTECTION
 Importance of this training
 References
 HV equipment
 Power System components
 Protection Single Line Diagram (PSLD)
 Protection Panel
 TCS Relay
 Trip Relay
 Lockout Relay
 What do we want to protect?
 Protection system elements
 How does the protection system work?

INTRODUCTION TO NUMERICAL RELAY IEDS
 Structure of Numerical Relay
 Architecture of the Numerical Relay Multifunction Protection Relays
 Example: Feeder Protection
 Block diagram for typical numerical relays
 Digital Phasor Measurement
 Numerical Relay Calculations
 Properties of SIPROTEC 5
 SIPROTEC 5 expansion modules
 Modular device concept, freely configurable
 Devices without Jumpers- no more opening of the device
 Sampling rate up to 16 kHz
 Draw out of the terminal blocks
 On-Site operation panel
 IEC61850 Certification
START WITH DIGSI 5

HARDWARE CONNECTIONS
 Power supply connections
 Current Transformer Terminals
 4 protection-class current transformers
 3 protection-class current transformers + 1 sensitive protection- class transformer
 4 instrument transformers.
 Connection Diagrams
 3 Phase + IN
 3 Phase
 3 Phase + IN separate
 Set test sequence & Monitor Current signals
 Phase sequence
 Neutral point in dir. Of object
Inverted phases
 Connection Examples of Voltage Transformers
 3-phase to ground voltages
 3-phase to ground volt. + VN
 2 ph-ph volt.
 2 ph-ph volt. +VN

RELAY MEASUREMENTS
 Operational Measured Values
 Fundamental Components
 Symmetrical Components
 Inject the three-phase values into the relay and monitor the relay measurements
 Monitor relay phasor values
 Relay binary inputs/outputs test
 Operational value in the relay
Check phasor values in the relay
WORKING ONLINE WITH THE RELAY
 Assign an online device to the project
 Copy the online device to the project
 Change Device mode
 SIPROTEC 5 Web browser
 Set date and time
 Monitor binary inputs, outputs, and LEDs
 Change parameters in the relays
 Reading Indications from the PC
 Operational Log
 Fault Log
 Ground-Fault Log
 Fault Recording
 Fault recorder settings
 Fault recorder config
 Download fault records
 Commissioning mode
 Binary Input and Output Test

FAULTS
 Normal Operation of Power System
 Abnormal Condition of power system
 Types of faults
 The cause of the fault in the power system equipment
 Short circuit type fault
 Short circuit with impedance
 Broken conductor fault
 Inter-circuit fault
 Cross-country fault
 Faults in overhead transmission lines
 Generator Stator Winding Faults
 Generator Rotor Circuit Faults
 Transformer faults
 Motor Thermal Failure
 Failure rate of power system equipment
FAULT SIMULATIONS
 Single-phase fault simulation
 Earth fault simulation
 Phase-to-phase fault simulation
 RMS and Instantaneous signals
 Ph-Ph-E fault simulation
 3-phase fault simulation
 3-phase-E fault simulation
 Fault Zero sequence values
 Fault Negative sequence values
 Fault impedance values
 Primary and secondary values

OVERCURRENT DEFINITE TIME ANSI 50
 Overcurrent DT 50
 How to configure OC protection
 How to test OC protection
OVERCURRENT INVERSE TIME ANSI 51
 How OC relay works
 Overcurrent IT 51
 Overcurrent curves
 How to configure OC protection
 How to test OC protection
EARTH FAULT PROTECTION
 IE calculation
 IE measurements
 Config earth fault protection
 Earth log config in DIGSI 5
TEST EARTH FAULT PROTECTION FUNCTION
 Earth fault protection (ANSI 50N/51N)
 Set test sequence
 Inject earth fault values into the relay
 Monitor the IE in the relay
 CT Connection Types
 Monitor earth fault current in the SIPROTEC 5 relays with different CT Connection types
 Simulate several earth faults and test the function in the relay
NEGATIVE SEQUENCE CONFIG
 Negative sequence protection function (ANSI 46)
 Config Neg Seq protection in SIPROEC 5
 Fault simulation and set test sequences
 Inject the values and monitor the Negative sequence signals
 Analyze relay logs and recorders
VOLTAGE PROTECTION
 Over/ under voltage protection function (ANSI 27/59)
 Config Overvoltage and under voltage
 Set test sequences
 Voltage protection testing
 Analyze fault logs and recorders
DIRECTIONAL OVERCURRENT PROTECTION
 Why Directional overcurrent protection
 How to configure Directional overcurrent protection ANSI 67 in SIPROTEC 5
 Simulate a fault in the forward direction
 Simulate a fault in the backward direction
 Create test sequences to test Direction OC Protection
 Playback the signals and monitor the 67 function signals
 Check relay fault logs and records
67N DIR. OVERCURRENT PROTECTION GROUND
 Why 67N?
 How does 67N work?
 How to configure 67N?
 Fault simulation to test 67N
 Create test sequences to test 67N
 Test 67N with simulated signals
 Analyze relay fault logs with 67N operation
 Analyze the fault record with the 67N operation

OVER EXCITATION PROTECTION
 Why overexcitation protection
 How to config over excitation protection in DIGSI5
 Set test sequences to test the overexcitation protection
 Check the relay fault logs for the overexcitation protection
FREQUENCY PROTECTION
 Why frequency protection
 How to configure frequency protection functions
 Set test sequences to test frequency protection functions
 Test the frequency protection function
 Check the relay logs and records for the frequency protection signals

COMTRADE VIEWER (SIGRA OR OTHER TOOLS)
 Comtrade format
 Import and configure the fault record in SIGRA
 Time signals
 Harmonic signals
 Binary signals
 RMS and Instantaneous values

RELAY CONFIGURATION
 SIPROTEC 5 config procedure
 Application templates
 7SJ8 Application Template
 7UM8 Application Template
 7UT8 Application Template
 7SA8 Application Template
 Export template

TRANSFORMER PROTECTION
 Why Transformer Protection
 Earth Fault on H.V. External Connections
 Phase-to-Phase Fault on H.V. External Connections, Internal Earth Fault on H.V. Windings
 Internal Phase-to-Phase Fault on H.V. Windings Short Circuit Between Turns H.V. Windings
 Earth Fault on L.V. External Connections
 Phase-to-Phase Fault on L.V. External Connection,s Internal Earth Fault on L.V. Windings
 Internal Phase-to-Phase Fault on L.V. Windings Short Circuit Between Turns L.V. Windings
 Transformer Protection Scheme
TRANSFORMER DIFFERENTIAL PROTECTION
 Transformer Differential Protection
 Config Transformer Differential Protection in DIGSI 5
 Differential protection basics
 Restraint Differential protection
 Internal fault
 Internal fault (high-set element)
 Magnetizing current and blocking by the 2nd harmonic
 External faults
 External faults with CT saturation
 Differential protection config in SIPROTEC 5 7UT
TRANSFORMER-RESTRICTED EARTH FAULT
 Why Restricted Earth Fault (ANSI 87N)?
 How does REF work?
 How to configure Transformer-REF
 In-zone and out-of-zone faults

LINE PROTECTION
 Transmission Line Faults
 Line protection functions
 Why Use Distance Protection?
 How Distance protection works
 Distance Protection
 Distance measurement (principle)
 phase- phase -loop
 phase- ground -loop
 Load and short-circuit impedances
 Distance characteristics
 Stepped Distance protection
DISTANCE PROTECTION IN SIPROTEC 7SA8
 General
 Pickup method
 Distance zones (quadrilateral characteristic curve preconfigured)
 1-pole/3-pole output logic
 Ground-fault detection
 Direction Determination
BUSBAR PROTECTION
 Busbar Protection Introduction
 Busbar Differential Protection
 Install the 7SS85 device driver
 Config single Busbar arrangement in DIGSI 5
 Config 1.5 busbar arrangement in DIGSI 5
 Disconnector image
 Config double busbar arrangement in DIGSI 5