How Can We Help?

Distribution

Electricity distribution networks take high-voltage electricity from the national grid and distribute it at lower voltages to homes and businesses.

Delta designs, builds, repairs, tests and maintains electricity distribution networks across the South Island. This includes equipment such as substations, switchgear, transformers, cables, poles and overhead lines.

We have very experienced people ready to help you in the Tasman, Central Otago and Otago regions. Our range of services covers all aspects of distribution, including the ability to complete work using live line methods without turning the power off.

Design

Delta can provide a full design service for distribution networks that encompasses electricity and communications infrastructure, including new subdivisions reticulation.

We design:

Subdivision reticulation
Underground Services
Overhead Lines
Distribution Substations and Switching Stations
Secondary Systems – Protection and SCADA

Underground

Delta can provide you the full end-to-end service for your underground assets. We have extensive experience and capability in cable networks that covers a wide range of cable types up to 33kV. Our expertise extends to Oil and Gas filled cable technology, Paper-insulated lead covered, Polymeric cables, and more modern high voltage cable types. Our services include:

Design
Civil works
Cable installation
Cable jointing and termination
Cable testing and fault diagnostics
Cable preventative maintenance and fault repair
Cable location and Standover

Overhead

Delta can provide you the full end-to-end service for your overhead assets. We have extensive experience and capability in overhead networks up to 66kV.

Design
Construction
Preventative maintenance and fault repair
Glove and Barrier and Hot Stick live line techniques up to 33kV

Let’s talk electricity distribution. Contact us today.

The Difference We've Made

Cape Saunders, Otago Peninsula

Delta delivered 14km of new high voltage overhead lines to the Cape Saunders area on behalf of Aurora Energy. The project involved navigating steep terrain and had access difficulties for crews. A high level of coordination was required across multiple parties, including contractors, landowners, consumers and a helicopter provider. Delta managed to complete the project efficiently and without injury or complaint.

Delta delivered 14km of new high voltage overhead lines to the Cape Saunders area on behalf of Aurora Energy. The project involved navigating steep terrain and had access difficulties for crews.

A high level of coordination was required across multiple parties, including contractors, landowners, consumers and a helicopter provider. Delta managed to complete the project efficiently and without injury or complaint.

Substation Upgrade, Cromwell

Delta worked on the Cromwell substation upgrade throughout 2020. The project was on track to be completed in April 2020, however due to the effects of COVID-19, the project was delayed. During Alert Level 3, the site team were able to return to work and progress the project ensuring they kept within safe working bubbles and followed distancing measures.

Smith Street Project, Dunedin

Delta upgraded the 33kV cables in Dunedin to connect the Halfway Bush Transpower substation to the Aurora Energy Smith Street zone substation. The design-build project took 12 months to complete and was very successful, particularly given the significant disruption to Dunedin residents regarding road changes.

Delta upgraded the 33kV cables in Dunedin to connect the Halfway Bush Transpower substation to the Aurora Energy Smith Street zone substation.

The design-build project took 12 months to complete and was very successful, particularly given the significant disruption to Dunedin residents regarding road changes.

New Zone Substation, Carisbrook, Dunedin

Delta completed all electrical works for the new zone substation at Carisbrook. This project involved installation of new 33kV underground cables, power transformers, 33kV and 11kV switchgear, protection panels. local services and transformer neutral earthing resistors. The Carisbrook substation was delivered to a high standard and in accordance with Aurora Energy requirements.