Design · Supply · Install · Test
High-voltage engineering, from specification to energisation.
Substation design, GIS installation, HV/EHV testing and equipment supply for utilities, EPCs and asset owners — 240 V to 500 kV.
Services
Engineering and field execution
All services →Substation Design
Primary and secondary design for AIS and GIS substations from 11 kV to 500 kV.
- —Single-line and layout design
- —Earthing and lightning protection design
- —Protection and control schematics
Technical Studies
Load flow, fault level, protection coordination, arc flash and insulation coordination studies.
- —Load flow and short-circuit studies
- —Protection grading and coordination
- —Arc flash hazard assessment
GIS Installation
Erection, gas handling and commissioning of gas-insulated switchgear up to 500 kV.
- —Bay assembly and alignment
- —SF6 / alternative gas handling and vacuum processing
- —Moisture, purity and leak testing
HV/EHV Testing & Commissioning
Routine, site acceptance and diagnostic testing for transformers, switchgear, cables and protection.
- —Power-frequency and VLF withstand
- —PD measurement and diagnostics
- —Transformer SFRA, tan delta and ratio
Cable Termination
Indoor and outdoor terminations and joints for AIS and GIS, MV through EHV.
- —GIS plug-in and dry-type terminations
- —Outdoor porcelain and composite terminations
- —Straight and transition joints
Civil & Cable Laying
Civil works, trenching, ducting and HV cable pulling for substation and line projects.
- —Foundations and cable trenches
- —Duct bank and pit installation
- —Cable pulling and cleating
Voltage coverage
Every network level, one partner
From single-phase supply to 500 kV EHV transmission, our services, products and rentals are organised by voltage class so you can match specification to capability quickly.
| Network level | System voltage |
|---|---|
| EHV | 500 kV |
| EHV | 330 kV |
| HV | 275 kV |
| HV | 220 kV |
| HV | 132 kV |
| Sub-transmission | 66 kV |
| Sub-transmission | 33 kV |
| Primary Distribution | 22 kV |
| Primary Distribution | 11 kV |
| Primary Distribution | 6.6 kV |
| Secondary Distribution | 415 V |
| Single Phase Supply | 240 V |
Projects
Proof of delivery
330 kV GIS Retrofit
All bays energised with zero PD defects detected at handover and no unplanned outages during the works.
132/33 kV Zone Substation
Design package accepted at first utility review with no rework of the earthing or protection studies.
Renewable Connection Testing
First-pass acceptance on all tested assets; the energisation date was met with no retesting required.
Have a specification or scope ready?
Send us voltage class, equipment type and project phase — we respond within one business day.