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QUANGANHCONS · 22–35 kV NETWORKS · ROUTES · TERMINATIONS
Medium Voltage Lines & Underground Cables in Vietnam
Build a verifiable connection route from the supply point to the substation.
What this service covers
QuangAnhcons provides overhead and underground medium-voltage electrical works for factory connections, industrial facilities and defined network relocation packages in Vietnam. A complete proposal addresses the route, cable or conductor system, structures, joints, terminations, protection interfaces, testing and reinstatement responsibilities.
Discuss your project in English with our team. Our priority delivery area is Southern Vietnam; project location, access and mobilization are confirmed during quotation.
A defined scope from design to handover
Route assessment and design
Review survey data, connection location, existing utilities, cable entries, road crossings, access and future expansion. Compare feasible route options with civil and electrical interfaces clearly identified.
Overhead distribution works
Coordinate poles, structures, foundations, conductors, insulators, hardware, earthing and protection equipment against the approved design and the local network operator's requirements.
Underground cable installation
Define trench or duct construction, drainage, pulling arrangements, cable drums, route markers, joint locations, sealing and reinstatement. Assess specialist trenchless crossings separately.
RMU and termination interfaces
Coordinate voltage class, cable construction, connector interfaces, screening, bonding and accessory compatibility. Prepare acceptance checks and agreed testing before energization.
Engineering decisions that shape your project
Match cable voltage ratings to the actual system
The nominal network voltage alone is not enough to select a cable. Confirm U₀/U(Um), system earthing, fault duration and the project specification. The scope of IEC 60502-2 is not a blanket approval for every 35 kV network; the cable system and accessories must meet the applicable rated-voltage and utility requirements.
Thermal and fault performance
Cable ampacity depends on installation arrangement, soil thermal resistivity, depth, ducts, grouping and ambient conditions. Check short-circuit thermal duty and screen/earth-fault duty against the clearing time. Verify the intended bonding arrangement and the manufacturer's installation limits.
Measure installed length and purchase length separately
A hypothetical three-core cable route of 300 m, two 8 m risers and 8 m of measured bends/termination allowance requires 324 m before any stated procurement reserve. Three single-core cables covering the same route require three conductor lengths, or 972 m in that example. Drum planning, joint positions and actual geometry may change these quantities.
Constructability and testing
A route that fits on a plan may still fail cable-pulling limits. Check bending radii, pulling tension, sidewall pressure, duct occupancy and access to joint bays. Specify the inspection and electrical tests appropriate to the installed cable and accessories. Test method, voltage and duration are selected by the responsible engineer and equipment guidance, not copied from a generic checklist.
What belongs in the bill of quantities
| Work or material group | Measurement basis | What the offer should define |
|---|---|---|
| MV cable or overhead conductor | m / phase / circuit | Voltage class, construction and installed/purchase lengths |
| Cable joints and terminations | Set / phase | Compatible accessory type and interface rating |
| Poles, foundations and hardware | Unit / set / m³ | Approved structural and civil design |
| Ducts, trenches and joint bays | m / unit / m³ | Route sections, depth, reinstatement and crossings |
| Switching, protection and earthing | Set / connection | RMU, LBS or protection interfaces as designed |
| Testing, logistics and reinstatement | Package | Drum handling, access, witnesses and civil boundaries |
From your brief to acceptance
- Confirm connection conditions and ownership boundaries.
- Review the route, constraints, permits and available survey information.
- Approve the electrical/civil design and coordinated cable schedule.
- Agree materials, drum lengths, installation method and inspection points.
- Complete construction, accessory installation and specified tests.
- Close records, coordinate authorized energization and deliver as-built route information.
Documents you should receive
- Approved route and typical installation sections
- Cable/conductor schedule and accessory register
- Cable-pulling and installation method documentation
- Material traceability and installation inspection records
- Electrical test reports and network interface records
- As-built route, joint locations, labels and handover dossier
The quotation identifies included documents, review cycles, approvals, acceptance criteria, exclusions and warranty obligations.
Frequently asked questions
Is underground installation always better than an overhead line?
No. Compare available corridors, network requirements, civil work, fault location/repair access, aesthetics, exposure and lifecycle cost. The preferred arrangement is project-specific.
Can an approximate route support a budget quotation?
Yes, provided route lengths and civil assumptions are stated. A firm offer needs the approved route, interface details and verified conditions affecting installation.
Are joints unavoidable?
No. Drum lengths and pulling sections can sometimes reduce them. The decision must also account for delivery logistics, permissible pulling loads, bends and future repair access.
Who authorizes energization?
Energization follows the responsible network operator's and asset owner's procedures. Construction completion alone does not authorize switching or connection.
Technical reference framework
Relevant engineering references are selected for the contracted equipment and installation. Applicable Vietnamese requirements, local network conditions, manufacturer instructions and the agreed design basis determine project compliance; listing a standard is not a certification claim.
Send the information needed for a useful quotation
Start with the drawings and data you already have. We can identify what can be priced now and which points require verification.
- Connection point and utility/network owner requirements
- Nominal voltage, circuit capacity and fault data if available
- Route plan with approximate overhead and underground lengths
- Road crossings, existing utilities and access constraints
- Substation/RMU cable entry and termination requirements
- Required energization date and responsibility for permits/reinstatement
Contact QuangAnhcons
+84 919 758 191
sales@quanganhcgte.com
The email button opens your mail app with a service-specific brief. Attach drawings or share a viewable document link before sending.