Electrical Commissioning Services | TABCOMM Saudi Arabia

Electrical Commissioning

Electrical commissioning verifies that a building’s power distribution, emergency power and protection systems are safe, correctly set and ready to carry load before energisation and handover. It covers everything from the MV switchgear to the last emergency light.

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Power Has to Work the First Time, and Every Time After

A wrong relay setting, an untested ATS or a weak earth connection rarely shows up on a normal day. It shows up during a fault or a mains failure, when a hospital, data centre or operations room can least afford it. Electrical commissioning tests those moments on purpose, under controlled conditions.

Electrical Systems We Commission

System	Key tests
MV and LV switchgear, transformers	FAT and SAT witnessing, insulation resistance, HV withstand, oil testing, no load and full load tests
Protection relays	Settings verified against the coordination study, secondary injection testing
Busbars and terminations	Torque checks and post-energisation thermal imaging
Diesel generators and ATS	Mains failure simulation, start and transfer time, load bank testing up to 100% for 4 hours
UPS and batteries	Static switch transfer, full load discharge and autonomy testing
Distribution and wiring	Continuity, insulation resistance, loop impedance, PSCC, RCD testing
Earthing and bonding	Earth electrode resistance and bonding continuity
Lighting and emergency lighting	Circuit tests, illuminance levels, 3 hour battery endurance, DALI and KNX controls
Fire alarm and ELV	Cause and effect matrix, detector testing, sounder levels, CCTV, access control, PAVA, nurse call

How We Commission Electrical Systems

Document review. Single line diagrams, coordination study and as-installed drawings checked against the installation.
Factory acceptance. We witness FAT for switchgear, generators and UPS at the manufacturer’s works.
Installation verification. Cable terminations, earthing, labelling and fire stopping inspected on site.
Every test carried out with calibrated instruments and recorded on signed test sheets.
Energisation and load tests. Coordinated with the utility and the contractor under a permit to work.
Integrated testing. Electrical and mechanical interfaces tested together during mains failure and fire scenarios.
Handover. Completion certificates and O&M documentation for the client.

Standards We Follow

IEC 60364, BS 7671, IEC 60296, IEEE, NETA, BS EN 1838, BS 5839-1, NFPA 72, and Saudi Electricity Company requirements.

What You Receive

Electrical commissioning plan and method statements · Signed test sheets for every test · Relay test records and thermal imaging report · Load bank and UPS discharge test reports · Punch list register tracked to closure · Commissioning completion certificates

Recent Electrical Commissioning Projects

KAFD, Riyadh · Al Majid Tower, Riyadh · Saudi National Bank Main Branch, Dammam · Dr. Sulaiman Al Habib Al Hamra Hospital, Riyadh · KSIA Air Traffic Control Tower, Riyadh

Electrical Commissioning FAQ

Do you have any question?

1. What is electrical commissioning?

It is the independent testing and verification of a building’s electrical systems, including switchgear, transformers, generators, UPS, earthing and protection, to confirm they are safe and work as designed before handover.

2. What is a load bank test?

A load bank test runs a generator at set steps up to its full rated load using an artificial load. It proves the generator can carry the building’s demand with stable voltage and frequency.

3. Why are protection relay settings verified?

Relays decide which breaker trips during a fault. If settings do not match the coordination study, a small fault can black out a whole building. We check settings and test each relay by secondary injection.

4. Does electrical commissioning include low current systems?

Yes. We test fire alarm, CCTV, access control, PAVA, nurse call, BMS and structured cabling as part of the electrical and integrated testing scope.