Testing & Commissioning of Switchgear and Switchyard Equipment Service

NISSI specialize in the testing and commissioning of switchgear and switchyard equipment.

We specialize in the testing and commissioning of GIS up to 400kV and AIS up to 765kV voltage levels. Our expertise extends to both High Tension (HT) and Low Tension (LT) equipment, ensuring optimal performance and compliance with industry standards.

The process begins with precondition checks, including a thorough visual inspection to ensure the electrical installation is correctly executed. We also verify the system design to confirm compliance with specifications.

Once verification is complete, we proceed with equipment testing as per approved protocols. This includes:

Functional testing to validate the operational characteristics of electrical equipment.

Operational checks to ensure the system functions as intended.

Following individual equipment testing, we conduct integration testing to confirm interoperability and seamless coordination within the system.

During the commissioning phase, we perform final inspections to verify that all equipment meets the required specifications.

Comprehensive documentation is prepared, including test reports, certifications, and manuals for future reference.

Scope of Testing & Commissioning:

✔ Switchgear & Substation Equipment:

Isolators, disconnectors 

Circuit Breakers

Current Transformers (CT), 

Capacitor Voltage Transformers (CVT)

Power Transformers

Busbar Systems

Surge arrester

Reactors 

✔ Auxiliary & Protection Systems:

DC Systems

Earthing Systems