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What We Do

Power Engineering Services

Six full-scope service lines — from design, procurement, installation and testing through to ongoing maintenance of power and automation systems.

01 · SCADA & Substation Automation

SCADA & Substation Automation

Design, supply, install and commission SCADA and Substation Automation systems, with protocol testing to IEC 60870-5-101/104 and IEC 61850.

  • Design, Supply, Install & Testing/Commissioning
  • Protocol Testing: IEC 60870-5-101 / IEC 60870-5-104
  • IEC 61850 GOOSE / MMS Integration Testing
  • RTU & Substation Automation System Integration

Reference Standards

IEC 61850IEC 60870-5-101IEC 60870-5-104

Voltage Levels Covered

LVMVHVAC/DC
02 · Electrical Power System

Electrical Power System (LV/MV/HV)

AC and DC switchgear, power transformers, and AC/DC cabling — from design through to commissioning.

  • AC & DC Switchgear — design, supply, install
  • Power Transformer Testing & Commissioning
  • AC/DC Cabling
  • 750VDC Switchgear T&C for mass transit systems
03 · Protection Relay

Protection Relay Testing & Commissioning

Relay testing, setting and replacement, primary/secondary injection, and power supply test & commissioning (AC/DC).

  • Relay Testing, Setting & Replacement
  • Primary & Secondary Injection (CSCS) Testing
  • Power Supply Test & Commissioning (AC/DC)
  • VLF Testing of MV/HV power cables

Delivered with Omicron Test Universe, PCM600, DIGSI, SEPCOS and IEDScout, to IEC 60255 and IEEE C37.

Experienced with leading relay platforms including Siemens SIPROTEC, ABB Relion, GE Multilin, SEL, Schneider Electric MiCOM and Hitachi Energy Relion — covering both new installations and retrofit of existing schemes.

CNEXT Siemens SIPROTEC protection relay test panel
CNEXT team installing rooftop solar panels
04 · Solar & Renewable Energy

Solar & Renewable Energy

Authorized dealer and installer of Huawei FusionSolar — smart PV inverters, storage and EV chargers. EPC, testing, commissioning and O&M for solar and wind power plants.

  • Solar EPC: design, install, testing, commissioning
  • Rooftop & Ground-mount Solar PV Systems
  • Huawei FusionSolar Inverters, Smart String & Storage
  • O&M and protection for solar & wind power plants

Experience with Super Energy Group: Nong Khaem Solar 6MW · Huai Sakae 8MW · Ban Lam 1&2 (6MW each) · Bo Nok 5.95MW

05 · Construction Works

Construction Works (M&E)

Mechanical & electrical construction works that support power system installation from the ground up.

  • Cable Containment & Cable Laying
  • Foundation & Opening Works
  • Earthing & Bonding
  • Lightning Protection System

Cable Tray Installation

Cable tray installation for communication and SCADA systems on the Green Line Extension project.

GIS / AIS Substations

Scheduled maintenance for MRT/BTS substations and industrial plants.

06 · Maintenance

Preventive & Corrective Maintenance

Scheduled preventive maintenance (PM) and corrective maintenance (CM) of GIS/AIS substations and MV/LV switchgear, on-site.

  • Scheduled PM of GIS/AIS substations
  • MV/LV Switchgear Maintenance
  • Monthly E&M Preventive Maintenance for MRT/BTS
  • Corrective Maintenance & Emergency Callout
Core Expertise

Specialist Capabilities

Proven across rail transit, utility (PEA), industrial and renewable power projects.

  • Protection Relay Testing, Setting & Replacement
  • Primary & Secondary Injection (CSCS) Testing
  • Power Supply Test & Commissioning (AC/DC)
  • SCADA / RTU & IEC 61850 Integration Testing
  • Solar PV & Huawei FusionSolar Installation
  • Solar Farm & Wind Farm Electrical Service
  • VLF Testing of MV/HV power cables
  • Preventive Maintenance of GIS/AIS substations

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