High voltage and utilities

Substations, transmission and distribution stations up to 145 kV, and the aerial and underground lines between them, plus rooftop solar.

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From the grid to the building

SECCO's utilities work covers the high-voltage side of a project, from substations to the lines between them.

The same scope reaches into power plants, generating and uninterruptible AC power systems, oil and gas infrastructure, waste-water treatment plants and telecommunications.

Our electrical and communication scope also covers high-, medium- and low-voltage systems, substation construction, HV transmission lines and underground systems.

What our utilities scope covers

Substations and stations

Conventional and GIS substations
Transmission and distribution stations up to 145 kV
Civil construction of substation buildings

Lines and underground networks

Transmission and distribution lines, aerial and underground
Duct banks, manholes and hand holes
Cable splicing and HV termination connections
LV and communication underground systems

Power and plant

Power plants
Generating and uninterruptible AC power systems
Waste-water treatment plants
Oil and gas infrastructure

Communications

HV data communication and fibre optic
Telecommunication

SECCO HV, our high-voltage specialist

SECCO HV Co., Ltd. is the SECCO group's specialist subsidiary for high-voltage and infrastructure projects. It shares SECCO's head office in Samut Prakan and has its own line on +66 (0) 2 361 8783.

It is one of two specialist subsidiaries in SECCO's management structure. The other, Grand Intersec, specialises in condominium building projects.

The SECCO group

Workers in hard hats fit out a grey electrical enclosure on a two-pole concrete platform beside a building, with ladders against it — Pole-mounted electrical equipment being fitted out

Panels and underground cable routes

Motor-control panels and underground cable routes from SECCO high-voltage work.

Grey motor-control and distribution panels with coloured indicator lamps, below cable trays and insulated ducts — Motor-control and distribution panels

Trench lined with timber formwork holding red cable conduits on spacers with rebar ties, with spoil heaps and a mobile crane beyond — Cable conduits in a lined trench

Deep excavated trench with conduits laid on white spacers between dark formwork panels, and a worker at the far end — Conduits laid on spacers in an excavated trench

Rooftop solar, from panel to inverter

Our rooftop solar scope covers PV module installation, the mounting structure on the roof, DC cable routing, the inverter installation area, and earthing and lightning protection.

The parts of a rooftop PV system in our scope, from modules to inverter. General illustration, not a specific installation.

Rooftop solar installations

Mounting posts set out on a flat roof, cabling under the panels, and finished arrays.

Workers set out mounting posts in small timber formwork boxes across a flat concrete roof, with trees and houses beyond — Mounting posts set out on a flat roof

Underside of a solar array: a mounting post on a concrete footing, with grey flexible conduit and red, black and green-yellow cables — Mounting post, conduit and DC cabling under the array

Top-down aerial view of factory roofs with rows of solar panels — Rows of panels on long metal roofs, seen from above

Where next

Electrical and communicationHigh-, medium- and low-voltage systems inside the building.Utilities and infrastructureOur project references in this sector.Energy and sustainabilityRooftop solar and energy retrofits.Testing and commissioningStart-up, testing and commissioning before handover.

Talk to an engineer about your next building.

Tell us about the project, the programme and the systems you need. A SECCO engineer will reply.

Send an enquiry Call +66 2 749 9311