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PROVEN FIELD EXECUTION & COMMISSIONING

Cross-Border Electrical Power & Infrastructure Projects

A track record of successful engineering execution, turnkey substation construction, and high-voltage power deliveries across Tunisia, North Africa, and regional African corridors.

Total Capacity Facilitated
3.4 GW
Substation Bays Deployed
85+ Bays
BESS & Microgrid Assets
32+ MWh
Zero-Incident Safety Record
100%
MAGHREB UTILITY INTERTIERef 01 · North Africa / Maghreb Grid
Completed & Energized

225 kV / 90 kV Primary Transmission Substation Expansion

Comprehensive turnkey expansion and retrofitting of an essential high-voltage grid hub connecting primary regional industrial corridors with cross-border power transmission routes.

Client Authority
Regional Transmission System Operator
Voltage Level
225 kV / 90 kV Transmission
Nominal Capacity
2 × 120 MVA Autotransformers
Project Timeline
18 Months Turnkey

Engineering Challenge

The project required executing brownfield construction adjacent to live 225 kV transmission busbars with zero unplanned outages to surrounding industrial consumers, coupled with severe summer ambient temperatures exceeding 48°C.

T Afrik Executed Solution

T AFRIK engineered a staged modular cut-over sequence using pre-commissioned digital protection relays and temporary bypass feeders. We coordinated factory witness testing of dual 120 MVA autotransformers and oversaw heavy-haul transport from port to site.

Technical Scope & Commissioning Highlights

  • Gas-insulated switchgear (GIS) expansion with SF6 density telemetry
  • IEC 61850 substation automation architecture with redundant optical rings
  • High-voltage dielectric and partial discharge (PD) testing on site
  • Integration with national dispatch SCADA protocols

Validated Project Metrics

Installed Capacity
240 MVA Total
Availability Factor
99.98%
Unplanned Outages
Zero (0) Hours
MINING MICROGRIDRef 02 · West Africa Mining Corridor
In Active Operation

32 MWh Hybrid Microgrid & Utility BESS Setup

Design and integration of an industrial off-grid hybrid power system combining large-scale lithium iron phosphate (LFP) energy storage with utility solar arrays to power continuous 24/7 mineral processing mills.

Client Authority
Industrial Mining Consortium
Voltage Level
33 kV Medium Voltage Distribution
Nominal Capacity
32 MWh LFP BESS + 24 MWp Solar PV
Project Timeline
14 Months Turnkey

Engineering Challenge

The remote mine was wholly dependent on expensive, carbon-intensive diesel generators subject to volatile fuel convoy logistics. The electrical system suffered from large inductive motor starting surges causing frequent voltage sags.

T Afrik Executed Solution

Deployed 32 MWh of liquid-cooled containerized BESS with 4-quadrant power conversion inverters capable of millisecond virtual inertia and reactive power compensation, displacing over 65% of diesel consumption.

Technical Scope & Commissioning Highlights

  • Aerosol fire suppression and multi-layer battery management system (BMS)
  • Automated microgrid power plant controller (PPC) and spinning reserve optimization
  • 33 kV vacuum circuit breaker ring main units with arc-flash detection
  • Harsh tropical environmental hardening with C5 anti-corrosion marine coating

Validated Project Metrics

Diesel Displaced
65% Annual Reduction
Storage Capacity
32 MWh Utility LFP
Frequency Stability
±0.05 Hz Tolerance
URBAN INFRASTRUCTURERef 03 · Tunis Metropolitan Area
Completed & Energized

Metropolitan Financial District MV Ring Modernization

Fast-track modernization of urban medium-voltage distribution infrastructure serving premier commercial banking towers, stock exchange facilities, and mission-critical enterprise data centers.

Client Authority
Urban Development & Utilities Authority
Voltage Level
30 kV / 10 kV Underground Network
Nominal Capacity
45 MVA Redundant Ring Topology
Project Timeline
10 Months Fast-Track

Engineering Challenge

Underground substation footprints in central urban basements were strictly limited. Strict municipal noise and fire bylaws prohibited conventional flammable mineral oil transformers.

T Afrik Executed Solution

Supplied and integrated compact modular SF6-free ring main units and low-loss Class F cast resin dry-type transformers equipped with digital thermal sensors and automated motor mechanisms for remote SCADA switching.

Technical Scope & Commissioning Highlights

  • Class F cast resin dry-type transformers with PT100 temperature monitoring
  • Compact modular ring main units designed for tight urban basement substations
  • SCADA tele-control RTUs enabling automated feeder sectionalization under 500ms
  • Full coordination with Tunisian national grid regulations and safety bylaws

Validated Project Metrics

Feeder Redundancy
N-1 Dual Ring Architecture
Switching Time
< 500 ms Automated Transfer
Fire Safety Rating
Class F1 Self-Extinguishing
RURAL ELECTRIFICATIONRef 04 · Sub-Saharan Africa
Commissioned

Off-Grid Community Solar Clusters & Modular Sub-Stations

Turnkey supply and deployment of pre-assembled modular skid substations and decentralized microgrids powering regional medical dispensaries, water purification facilities, and agro-processing hubs.

Client Authority
Multilateral Electrification Program
Voltage Level
15 kV Mini-Grid Distribution
Nominal Capacity
12 Distributed Skid Substations
Project Timeline
12 Months Deployment

Engineering Challenge

Remote rural locations with minimal road infrastructure, absent skilled on-site electrical labor, and extreme dust conditions required pre-engineered, highly durable, self-contained units.

T Afrik Executed Solution

Manufactured containerized, skid-mounted mini-substations with factory-tested wiring, pre-integrated LV switchboards, surge arresters, and satellite-enabled telemetry for remote operations monitoring.

Technical Scope & Commissioning Highlights

  • Factory-wired modular skid substations ready for crane placement on compacted earth
  • Integrated distribution transformers with built-in surge protection and LV switchboards
  • GSM-based smart metering and remote asset performance telemetry
  • Localized operator training and preventive maintenance protocol handover

Validated Project Metrics

Skid Units Installed
12 Turnkey Substations
Remote Telemetry
100% Cellular/Satellite
Deployment Speed
3 Days per Substation Site

Engineering Desk

Have an Upcoming Transmission or Industrial Substation Project?

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