PURPOSE
 is to verify that all installed electrical
components and systems are functioning
correctly, safely, and according to design
specifications, ensuring optimal
performance and minimizing potential
faults before the system is fully
operational; essentially, it's a process to
guarantee the reliability and safety of the
electrical installation by identifying and
rectifying any issues before handover.
Electrical equipment used in
commissioning and testing
•
Circuit breakers: Tested as part of the commissioning process
•
Transformers: Current and voltage transformers
•
Cables: Tested for resistance, continuity, and other electrical
properties
•
Protection relays: Used to monitor faults in AC switchyards and
other AC apparatus
•
Isolators: Used in electrical systems
•
Switchgear: Used in electrical systems
•
Busbars: Used in electrical systems
Electrical testing methods
•
Insulation resistance test: Tests the integrity of electrical
insulation
•
Earth continuity test: Verifies that electrical paths are
grounded
•
Functional testing: Tests the operation and performance
of electrical equipment
•
Dielectric testing: Tests the insulating properties of
electrical equipment
•
Voltage testing: Ensures that a system's electrical circuits
operate safely
•
Low-resistance ohmmeters: Used to measure the
resistance of various types of equipment.