
High Voltage (HV) and Low Voltage (LV) Testing & Commissioning
I2R, as a firm of Professional Engineers and Licensed Electrical Workers, is qualified under the Electricity Act to carry out all types of electrical testing and commissioning works to ensure that electrical apparatus are fit for power energization and safe for use and operation. We have all the required testing equipment and qualified testing engineers to carry out all the necessary tests you need. If you are unsure of the type of electrical testing required, you can contact us for a free consultation (click here). Please refer to the following list for the types of testing and commissioning we offer:
- High Voltage Power Frequency Testing for HV switchgear, transformers, and LV main switchboards
- Pilot Wire Protection Relay Testing
- Primary and Secondary Current Injection Testing for Protection Relays
- Transformer Ratio and Winding Resistance Test
- High Voltage Cable VLF Testing
- HV Switchgear Busbar and Circuit Breaker Contact Resistance Test
- LV Switchboard Busbar and Circuit Breaker Contact Resistance Test
- LV Air Circuit Breaker Trip Unit Testing
- LV Busduct Contact Resistance Testing
- Electrical Earthing System Testing
- Transformer Protection Function Test
- Cable Fault Identification Testing
- Tangent-Delta Test for HV Cables and Transformers
- High Voltage Electrical Apparatus Partial Discharge Test
- Infra-red Thermography Scanning
- Dissolved Gas Analysis and Oil Quality Test for Oil-filled Transformers
- Lightning Protection System Inspection, Testing, and Audit
Other Services

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Whether you’re planning a new build, require troubleshooting, or need expert consultation, we are here to guide you every step of the way. Trust in our expertise to bring your project to life with precision and integrity.