Industries

HV Testing and Commissioning for Water and Wastewater Infrastructure

Talk to an engineer: 1300 730 499 or service@megavar.com.au

Megavar engineer commissioning HV switchgear at water treatment plant substation Australia

Megavar engineers commissioning a high voltage substation in Australia

Water and wastewater infrastructure operates around the clock to protect public health and the environment. Treatment plants, pump stations, desalination facilities, and recycled water systems all depend on reliable high-voltage power to drive large pump motors, variable speed drives, UV disinfection systems, and process control equipment. When HV systems fail at a water facility, the consequences extend beyond lost production to potential environmental discharge events and public health risks. Australian water utilities and their contractors face growing pressure to upgrade ageing electrical infrastructure while maintaining continuous service. New facilities are being designed with more complex power systems, including dual-feed substations, standby generation, and sophisticated SCADA integration. Megavar provides the specialist HV expertise that water sector clients need, from commissioning new treatment plant substations through to maintaining the protection and control systems that keep existing facilities running.

Services for Water and Wastewater

Treatment plant substation commissioning: Full commissioning of incoming supply substations, HV switchrooms, distribution transformers, and motor control centres at water and wastewater treatment plants. Our engineers commission assets from 11kV through to 66kV, ensuring protection schemes are correctly coordinated and SCADA integration is verified.
Pump station HV commissioning: Testing and commissioning of HV pump station substations, including variable speed drive (VSD) systems, motor protection, power factor correction equipment, and standby generator changeover systems. We work across both new installations and upgrade projects.
Protection relay testing and maintenance: Secondary injection testing of protection relays at water and wastewater facilities, including scheduled maintenance testing and relay replacement programmes. Our engineers test all major relay manufacturers and validate protection coordination across the facility's HV network.
SCADA and control system commissioning: Point-to-point SCADA verification, RTU testing, telemetry validation, and integration with utility SCADA master stations. Water facilities require highly reliable SCADA systems for remote monitoring and alarm management.
Earth grid testing: Comprehensive earthing system verification for treatment plants and pump stations, including grid resistance measurement, step and touch voltage assessment, and earth fault loop impedance testing to AS 2067:2016 and ENA EG-0 and EG-1 requirements, and AS/NZS 3000 where LV installation earthing is in scope.
Condition assessment and maintenance: Transformer oil analysis, insulation resistance testing, circuit breaker maintenance, and thermal imaging for water sector HV assets. We provide condition reports that support your asset management planning and capital works prioritisation.

Why Water Clients Choose Megavar

Water and wastewater facilities present unique challenges for HV service providers. Treatment plants are often in continuous operation, meaning testing must be carefully staged around process requirements. Pump stations may be in remote locations with limited access. Corrosive environments near chemical dosing and wastewater processes demand awareness of the operating conditions HV equipment faces.

Megavar's engineers understand these operational constraints. We plan our testing programmes around your process schedules, coordinate with plant operators to manage load transfers safely, and deliver comprehensive test documentation that meets the requirements of water utility asset management systems. Our experience across multiple water utilities means we understand the specific standards, procedures, and documentation expectations of the sector.

Equipment for Water Sector Projects

On water and wastewater projects, Megavar typically deploys Omicron CMC 356 relay test sets for protection testing, Omicron CPC 100 for transformer and CT verification, AEMC earth resistance testers for earthing system validation, and Megger insulation testers for cable and switchgear assessment. All equipment is available for hire if your team needs access to specialist gear for internal maintenance programmes.

Need High Voltage Testing or Equipment?

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Capability statement

All Megavar Services: Design, Testing, Commissioning and Maintenance

Every Megavar service line in one document: design, testing, commissioning, maintenance, resonant hipot, BESS, arc flash and power system studies, earthing, distribution design and test equipment hire.

FAQ

Frequently Asked Questions About Megavar

Does Megavar work on water treatment plants and pump stations?

Yes. Megavar provides HV commissioning, testing, and maintenance services for water treatment plants, wastewater treatment plants, pump stations, desalination facilities, and recycled water systems across Australia. Our experience covers both new-build commissioning and ongoing maintenance of existing facilities.

Can Megavar test HV equipment while the treatment plant remains operational?

Yes. Megavar has extensive experience staging HV testing around continuous plant operations. We work with your plant operators to plan load transfers, coordinate de-energisation of individual feeders, and sequence testing to minimise any impact on treatment processes.

Does Megavar commission variable speed drive systems?

Megavar commissions the HV infrastructure that powers VSD systems, including incoming supply switchgear, transformers, protection schemes, and motor control centres. We work alongside VSD suppliers to verify protection coordination and ensure safe integration with the facility's HV network.

Can Megavar provide ongoing maintenance for water sector HV assets?

Yes. Megavar provides scheduled maintenance programmes for water and wastewater facilities, covering protection relay testing, transformer condition assessment, circuit breaker maintenance, earth grid testing, and thermal imaging. Contact us on 1300 730 499 to discuss a maintenance agreement.

What earthing testing does Megavar perform at water facilities?

Megavar performs comprehensive earthing system testing including grid resistance measurement, step and touch voltage assessment, earth fault loop impedance testing, and earthing continuity verification. These tests confirm the HV earthing system complies with AS 2067:2016 and ENA EG-0 and EG-1 requirements and is safe for ongoing operation.

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