MV line and connection works
Overhead or underground 22–35 kV intake, cable installation, terminations and protection interface, subject to approved design.
Medium voltage / Industrial substations
Transformer substation construction & grid connection interfaces up to 35 kV
From initial capacity and intake review through equipment installation, cable interfaces, testing and coordinated energisation. Deliverable boundaries are agreed with the employer, designer and electricity utility.
Technical scope, construction boundaries and commercial terms confirmed per project.
Build from the point of connection outward
A robust substation RFQ needs more than a transformer kVA figure. The scope should identify the utility connection point, MV protection and switching, transformer configuration, LV feeder arrangement, cable routes, civil interfaces and the responsibility for design approvals, inspection and energisation.
QuangAnhcons focuses on implementation and coordination of approved MV/LV work packages, working with the relevant qualified designers, suppliers and utility stakeholders as defined in the project.
Packages that can be defined and priced
Transformer station configurations
Pole-mounted, indoor, kiosk or outdoor substation arrangements according to power demand, land and utility requirements.
Transformer, RMU and LV interfaces
Equipment receiving, positioning, installation, interconnection and integration with protection and metering.
Foundations, trenches and access
Substation installation coordination with civil works, clearances, earthing layout and construction logistics.
Acceptance and commissioning support
Electrical testing and inspection records, vendor coordination, as-built documentation and energisation readiness.
Supply upgrade and transformer replacement
Planned changeover, operating constraints and outage interfaces for production sites.
Practical gates before energisation
Review demand, diversity, future reserve and transformer selection assumptions.
Agree the utility boundary, MV scheme, protection, metering and access.
Manage work fronts, interfaces, inspections and equipment documents.
Complete agreed tests, punch-list, as-builts and utility coordination.
Engineering details worth sharing
Technical inputs
- System voltage, transformer kVA and expected connected demand.
- SLD, utility point of connection, cable route and site layout.
- Short-circuit rating and approved protection arrangement.
- Indoor/outdoor and transformer type requirements.
Contractual inputs
- Equipment supply versus installation split.
- Civil works, foundations, shutdowns and utility interfaces.
- Inspection/test responsibilities, permits and approval scope.
- Schedule, delivery constraints and exclusions.
Electrical construction context
Substation RFQ questions
Questions often raised during a preliminary engineering and commercial review.
Can you assess 22/0.4 kV and 35/0.4 kV arrangements?
Yes, subject to project-specific utility and equipment requirements. Actual feasible arrangement must be established through the approved design and grid-connection review.
Does a quotation include utility approvals?
Only if explicitly included. Submission, design and utility approval responsibilities must be allocated in the scope matrix before pricing.
Is a preliminary transformer size enough for a final offer?
No. Ratings alone do not define switchgear, cabling, earthing, civil work, protection, testing and site constraints.
Can you work at an operating factory?
Project plans can consider shutdown windows, segregation, safety and access constraints, which must be reviewed at the specific site.
Request engineering and commercial review
Planning a transformer substation project?
Send the location, technical ratings, SLD or BOQ if available, target dates and expected supply/installation boundaries. The quotation will identify assumptions and exclusions.
Prepare a project RFQ →
Hotline: +84 919 758 191
This page describes potential project services and engineering review activities; it does not constitute a certified design, equipment specification, project reference endorsement or fixed-price offer. Requirements follow the approved project drawings, applicable IEC/TCVN provisions, local utility requirements and agreed contractual scope.