Commissioning, Testing and Startup Of Electrical Systems

Introduction:

The safe and efficient operation of modern electrical equipment and control systems requires the successful testing, start-up and commissioning of this equipment, or system, to ensure correct operation, plus;

• Accurate troubleshooting
• Subsequent repair of this equipment, or system
• Ensuring continued productivity

Objectives:

• 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
• A refreshed awareness of electrical safety concerns

The Course:

 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 signalling/alarm devices

Commissioning and Testing of Electrical Equipment

• Methods
• Principles – Special techniques
• NEC check lists

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

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

A review of Safety Requirements

• Area classifications
• NEC electrical codes, Safety Information