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HV Testing​

Infrastructure HV Testing​

Specialised High Voltage Testing

At PLUS ES, we ensure the integrity and reliability of Australia’s most critical electrical assets. With NATA-accredited facilities, specialised HV testing equipment, and a team of expert engineers, we deliver confidence that your network will perform safely, efficiently, and in full compliance with international standards. From commissioning to fault diagnosis, we provide the assurance you need to energise projects on time and without compromise.​

40+​

Years Of Experience​

250+

Growing Team

100%

On Time Delivery

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Challenges we solve

Why Choose PLUS ES?

Dedicated and highly specialised advanced HV testing equipment

Dedicated engineering and testing team with extensive experience to predict and interpret testing results and provide feedback and advice during the testing to identify assembly and installation defects within the mains or apparatus undergoing testing.

Service operates Australia-wide

NATA accreditations

How you can start your journey with PLUS ES?

Click here to submit your enquiry and start your journey

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Frequently Asked Questions

Is PLUS ES having its own test equipment?
  • Network Test is a NATA-accredited section responsible for the high-voltage testing of switchgear, transformers, cables and primary equipment installed on the transmission and distribution network. The section is the custodian of specialised mobile testing equipment that enables field commissioning of major electrical infrastructure and fault identification of assets in their service position.
  • In addition to the high voltage field tests, the section also performs thermal surveys, corona surveys, electrolysis testing and cable scanning. Supporting the mobile testing capabilities, Network Test also operates a number of high-voltage laboratories to carry out equipment acceptance tests, regulatory and safety compliance tests. All testing is carried out as per the attached NATA scope, and NATA reports can be issued for all products listed in the document as per the nominated limitations and range. All Network Test staff are appropriately trained and perform testing according to strict safety procedures as per the local quality system and SWMS.
What accreditations do you hold?

NATA Accreditation No: 20351
Site No: 14568
Site Name: Network Test – the scope of accreditation is available on the NATA website.

Who We Partner With

PLUS ES partners with organisations ensuring the safety and reliability of NSW’s electrical infrastructure—delivering accredited high voltage testing for critical assets.

Electrical Project Managers

Comprehensive HV testing and commissioning services to guarantee safe, compliant project energisation.

Manufacturing and Development Engineers

Specialised testing, diagnostics, and certification for transformers, switchgear, and cables—supporting product quality and innovation.

TNSP & DNSP Electrical, Maintenance & Construction Engineers

On-site, NATA-accredited HV testing and fault location to maintain, upgrade, and energise transmission and distribution networks across NSW.