Electrical Equipment Protection Safety Testing and Inspection Course

Course Overview:

The course aims at improving participants' skills with respect to the commissioning, testing and troubleshooting of electrical systems and equipment. The emphasis lies on understanding the commissioning processes, failure mechanisms and the operation of test tools, with consideration for safety. 

Topics include the equipment technologies, methods for pre-commissioning and testing, earthing systems, electrical drawings analysis and work scope development. Participants will also be able to recognize and rectify failures and carry out first time energizations. 

The course is intended for electrical engineers, technicians, managers and safety management personnel and is exercise oriented as regards electrical safety and commissioning testing and screwing in of energizing connectors.

Course Objectives:

Upon the successful completion of the workshop, each participant will be able to:-

·       A better understanding of commissioning procedures

·       A better understanding of troubleshooting procedures

·       An improved capability in the use of test equipment

·       A better understanding of failure modes and failure analysis

·       Understand the testing process

·       Plan and prepare for testing

·       Plan and carry out inspections

·       Perform primary and secondary injections

·       Plan the first energization

·       Perform phasing tests

·       Consider safety aspects during testing

·       A refreshed awareness of electrical safety concerns

Who Should Attend?

This training course is suitable for a wide range of professionals but will greatly benefit:

• Testing Engineers / Technicians
• Maintenance Engineers / Technicians
• Managers of Engineering departments
• Consulting Engineers / Technicians
• Project Engineers
• Safety Professionals
• Others who want a solid preparation in testing & commissioning

Course Outlines:

Importance of Start-Up, Commissioning, and Testing of Electrical Systems 

• Definition of Start-up, Commissioning, and Testing
• Pre-commissioning Procedures
• Reasons for Start-up, Commissioning, and Testing
• Substation Commissioning – Gas Insulated Substation
• Managing Commissioning with IEC 61850 and GOOSE
• Earthing System including Clean Earth, Intrinsic Safe Earth, and Planet Earth
• Major Components of GIS Substations
• GIS with Vacuum Interrupter

The Technology of Electrical Equipment

• Transformers – Power supplies (UPS) – Batteries
• Generators – Switchgear – Disconnect switches
• Neutral ground resistors (NGR)
• Motor control centers (MCC) – Variable frequency/speed drives (VFD/VSD)
• Programmable logic controllers (PLC) – Distributed control systems (DCS)
• Power monitoring
• Control relays/timers/switches – Motor/feeder protective devices
• Miscellaneous equipment – Heaters, solenoid valves, electric valve actuators, and signaling/alarm devices

Commissioning and Testing of Electrical Equipment

• Methods
• Principles – Special techniques
• NEC checklists

Commissioning Test Equipment (CPC 100, Omicron 356, CIBANO, ARCO, TESTRANO) and Circuit Breakers including Instrument Transformers

• Types of Tests and Equipment for Commissioning
• IR test, Primary Injection Test, Secondary Injection Test
• HV Test, AC Hipot Test, DC Hipot Test and Connections
• Infrared and Partial Discharge Monitoring
• Circuit Breaker Functional Tests
• Tests for SF6 Circuit Breaker
• SF6 Management
• Construction and Test for Current Transformer and Voltage Transformers

Troubleshooting of Electrical Equipment

• Methods – Terminology – Principles
• Special techniques
• Case studies/examples
• Single line drawings
• Group exercises

The Use of Test Equipment

• Digital voltmeter (DVM)
• Megger
• Frequency meter
• Temperature probes/pyrometers
• Ammeters, Power meters
• Load banks
• Digital hydrometers
• Cable fault locators

Commissioning Test for Earthing and Lightning Systems 

• Importance of Earthing
• Network Earthing
• Neutral Earthing Resistors
• Restricted Earth Fault
• Sensitive Earth Fault
• Lightning Protection Systems
• Commissioning Testing for Protection
• Numerical Relays Functionalities

The Interpretation and Use of Drawings

• Single-line electrical drawings
• Control schematics
• Wiring lists
• P&ID’s
• Logic and standard symbols

The Development of a Job Plan

• Identification of the troubleshooting step-by-step sequence
• Procedure preparation
• Follow-up
• Safety considerations and training

The Identification and Repair of Problems/Failures

• Common mode failures, Phase imbalance
• Electronic component failure, Fusing
• Fusing
• Motor windings/bearings/brushes
• Excitation circuits
• Battery cells, Inverters/rectifiers
• Inverters/rectifiers
• Bushings – Switches
• Control circuits
• Ground faults

First Energization and Commissioning Documentation

• Battery Charger Commissioning Tests
• Commissioning Switching Plans
• Managing the First Energisation
• Switching Plans
• Soak Tests and Phasing Tests

A review of Safety Requirements

• Area classifications
• NEC electrical codes, Safety Information