High Voltage Installations Specialists
With an unwavering commitment to safety, compliance, and precision, our solutions support the robust electrical infrastructure required by hospitals, schools, defence facilities, and government projects.
Backed by certified expertise and advanced testing protocols, GAP Industries ensures the integrity and reliability of every high voltage installation, from substations to terminations, and switching operations to equipment commissioning.
High Voltage Distribution Infrastructure
Our high voltage distribution infrastructure services are engineered to meet the energy demands of large-scale operations and mission-critical facilities. Whether it’s a government precinct, a medical research facility, or a secure defence base, we design and implement scalable distribution systems that ensure uninterrupted performance and operational continuity.
In Defence environments, reliability and resilience are paramount. GAP Industries has a proven track record delivering high voltage distribution networks across RAAF bases, army barracks, and multi-user depots, where electrical infrastructure must support sensitive communications, 24/7 operations, and elevated security standards. Our installations are tailored to withstand high-demand scenarios, integrating redundant power paths and secure switching frameworks that align with Defence-specific operational protocols.
Our team is experienced in the deployment of overhead and underground networks, ensuring compliance with Australian Defence electrical requirements, and seamless integration with existing low and medium voltage infrastructure.
Transformers and Substations
GAP Industries provides turnkey installation of transformers and substations, from initial site preparation to final commissioning. Our installations include:
- Indoor and outdoor substations up to 132kV
- Power and distribution transformers
- Ring Main Units (RMUs)
- Protection and control systems
We perform rigorous compliance checks throughout each phase, ensuring full adherence to industry regulations and client-specific requirements.
Termination and Joints
Specialising in termination and jointing for high voltage cables up to 132kV, GAP Industries uses certified jointers and advanced tooling to deliver secure, low-loss connections. Our services include:
- XLPE and PILC cable terminations
- Heat shrink, cold shrink, and resin jointing
- Underground and overhead line jointing
All jointing and terminations are verified with insulation resistance testing, partial discharge analysis, and detailed inspection protocols.
High Voltage Switching Operations
Safe and precise high voltage switching operations are essential to avoid downtime and equipment damage. Our technicians are fully authorised and trained to conduct:
- Planned switching sequences
- Isolation and tagging procedures
- Load and no-load switching
We follow strict operational guidelines and emergency switching protocols to minimise risk and ensure personnel safety.
Equipment Testing and Commissioning
Our equipment testing services ensure that every high voltage installation meets functional and safety specifications prior to energisation. Services include:
- VLF (Very Low Frequency) cable testing
- Primary and secondary injection testing
- Protection relay configuration and testing
- Circuit breaker timing tests
All results are documented and delivered in comprehensive reports, ensuring full transparency and compliance.
General Electric Maintenance
Post-installation, we offer general electric maintenance packages tailored to each client’s infrastructure and operational risk profile. This includes:
- Routine HV inspections and thermographic surveys
- Asset lifecycle reporting
- Fault response and emergency repairs
- Preventive maintenance for substations and transformers
Our maintenance schedules are aligned with AS/NZS 3003:2018 to support facilities operating in high-dependency environments such as hospitals and data centres.
High Voltage Solutions for Critical Sectors
We specialise in high voltage solutions for sectors where power continuity is non-negotiable. Backed by over 30 years of industry expertise and more than 30 successfully delivered tenders, GAP Industries brings deep operational insight and reliability to every project.
Defence
Design and implementation of resilient HV systems for secure Defence infrastructure, including base facilities and training compounds.
Health
Certified installations for hospitals and clinics requiring isolated power systems, ensuring critical care services remain unaffected by grid fluctuations.
Government
Deployment of energy-efficient and secure HV systems for public infrastructure and operational facilities.
Commercial
Scalable solutions for retail, corporate campuses, and service centres requiring stable and efficient high voltage infrastructure.
Industrial
Robust HV installations for manufacturing plants, processing facilities, and mining operations with high energy demands.
Our enduring partnerships across these sectors are a testament to our long-term commitment to quality, compliance, and customer satisfaction.
Certified Quality and Safety Standards
GAP Industries operates under a rigorous framework of certified quality and safety, including:
- ISO 9001: Ensures consistent quality management systems across all projects.
- AS/NZS 3000
- AS2067 – Substations and high voltage installations
- AS/NZS 3008
These certifications underpin our commitment to delivering reliable and safe high voltage infrastructure tailored for critical environments.
Partner with GAP Industries
When reliability, safety, and compliance are paramount, GAP Industries delivers unmatched expertise in high voltage installations. Our solutions are purpose-built for the most demanding sectors, ensuring power infrastructure that performs under pressure.
Reach out to our team today to discuss how our certified high voltage solutions can empower your next project.
Frequently Asked Questions
What qualifies as a high voltage installation in Queensland?
A high voltage installation in Queensland is defined as one operating above 1,000V AC RMS or 1,500V ripple-free DC. These installations require mandatory auditing by an accredited inspector following any electrical work, as stipulated by the Electrical Safety Regulation 2013.
What are the legal responsibilities of HV installation owners or operators in Queensland?
Operators must ensure that any installation, maintenance, or modification is carried out by authorised personnel, and the installation must not be reconnected without a certified audit. Detailed records of inspections and testing must be maintained as required by law.
What testing is required before energising a high voltage system in Queensland?
Before energisation, the system must be certified by an accredited auditor confirming all components have been tested and meet Queensland’s electrical safety standards.
What safety procedures apply to working on HV equipment in Queensland?
Work on high voltage equipment must follow the Queensland Electricity Entity Standard for Safe Access (SAHVEA), including full isolation, earthing, access permits, and verification of a de-energised state prior to work.
Which standards regulate HV maintenance in Queensland?
HV maintenance must comply with the Electrical Safety Act 2002, relevant codes of practice, and the Electrical Safety Regulation 2013. This includes scheduled inspections, safety audits, and proper documentation.
What voltages do you install and commission?
We handle installations up to 132kV, including RMUs, transformers, and underground HV networks.
Do you provide emergency switching services?
Yes, our teams are authorised and equipped for both planned and emergency high voltage switching operations.
Are your technicians certified for cable jointing?
Absolutely. Our cable jointers are fully certified and trained in both heat and cold shrink jointing methods for HV systems.
Can you assist with substation design as well?
Yes. We provide design, installation, and commissioning for substations tailored to each client’s requirements.
Is your work compliant with health sector standards?
Yes. All our installations meet AS/NZS 3003:2018 requirements and are suitable for use in patient care environments.
