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QUANGANHCONS · AC & DC CHARGING · GRID CAPACITY · SITE INTEGRATION
EV Charging Infrastructure Contractor in Vietnam
Plan charging capacity around real vehicles, dwell time and available power.
What this service covers
QuangAnhcons supports the electrical infrastructure required for EV charging at factories, fleet depots, commercial premises and parking facilities in Vietnam. The package can include supply assessment, transformer and distribution interfaces, chargers, containment, grounding, load management and commissioning, subject to an agreed charger and operating-system specification.
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
Charging demand assessment
Define the number of vehicles, daily energy needs, arrival/departure patterns and required service level. Compare charger counts and power against actual dwell time and vehicle acceptance limits.
Electrical source and distribution
Assess incoming supply, transformer headroom, MSB capacity, feeders, protective devices and metering. Identify whether existing capacity, managed charging or a supply upgrade is appropriate.
Charger and site integration
Coordinate charger foundations, parking geometry, cable reach, bollards, accessibility, drainage, weather protection and equipment access. Confirm responsibility for communications, software and payment services.
Testing and operator handover
Verify electrical protective measures and demonstrate charging, stop functions, alarms, metering and agreed backend communications using the selected charger platform.
Engineering decisions that shape your project
Energy demand is different from charger nameplate power
A vehicle requiring 60 kWh over an eight-hour parking period has an average energy-delivery requirement of 7.5 kW before charging losses and interruptions. It may not require a high-power DC charger. Conversely, a short turnaround window can make DC charging necessary even if daily energy is modest.
Size the AC supply from the charger input
For a DC charger, grid input exceeds delivered DC power because of conversion losses and auxiliaries. In a hypothetical four-charger scheme at 120 kW DC each, 95% conversion efficiency and 10 kW of shared auxiliaries give about 515 kW AC. At assumed PF 0.98, the demand is approximately 526 kVA. Actual equipment input ratings and simultaneous operation govern the final design.
Load management must be enforceable
A diversity factor is only defensible when supported by operations or a verified control scheme. Dynamic load management can limit total site demand, but loss of communication, fallback limits, priority rules and minimum charging performance must be tested. Avoid promising the sum of charger ratings when the incoming power is deliberately constrained.
Safety, communications and compatibility
Confirm the manufacturer's residual-current and DC leakage provisions, protective earthing, disconnection, surge protection, enclosure rating and emergency arrangements. Verify vehicle connectors and communication/backend compatibility for the intended operating model. An advertised protocol label alone does not prove end-to-end interoperability or payment integration.
What belongs in the bill of quantities
| Work or material group | Measurement basis | What the offer should define |
|---|---|---|
| AC or DC charging equipment | Unit / connector | Output/input ratings, connectors and operating platform |
| Incoming supply and transformer works | Set / circuit | Included only where required by the confirmed capacity study |
| Charging distribution and feeders | Board / m / termination | Protection, metering, cables and containment |
| Civil and parking works | Foundation / bay / m² | Plinths, bollards, drainage and reinstatement |
| Controls and communications | Point / system | Demand control, network and backend integration scope |
| Testing and training | Package | Electrical verification, functional tests and operator handover |
From your brief to acceptance
- Define vehicles, energy demand, dwell time and the charging business model.
- Assess the existing supply and compare managed-demand and upgrade options.
- Select the charger platform and approve the electrical/civil interfaces.
- Agree equipment lead times, BOQ and site works programme.
- Install, configure and test the chargers and demand controls.
- Demonstrate operations and deliver documentation, training and warranty contacts.
Documents you should receive
- Demand assessment and staged capacity proposal
- Single-line diagram and charger/parking layout
- Cable/protection schedule and itemized BOQ
- Charger datasheets and platform responsibility matrix
- Electrical and functional commissioning records
- Operator instructions, account handover and warranty allocation
The quotation identifies included documents, review cycles, approvals, acceptance criteria, exclusions and warranty obligations.
Frequently asked questions
Does installing chargers always require a new transformer?
No. Check measured peak demand, spare source and distribution capacity, charging hours and the effect of load management. Some sites can use existing capacity; others require an upgrade.
Will every vehicle charge at the station's rated power?
No. Actual power depends on the vehicle, battery state, temperature, charger configuration, shared power allocation and site limits.
Can a project combine charging with solar and storage?
Yes, after a coordinated demand and controls study. Solar generation timing and storage dispatch must match the charging profile and the permitted electrical operating arrangement.
Does the package include billing software?
Only if specified. The offer should identify the backend provider, subscriptions, payment integration, data ownership, commissioning responsibilities and support arrangements.
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.
- Site location and parking/depot layout
- Vehicle types, quantities and daily charging energy
- Arrival, departure and target turnaround times
- Existing transformer, contracted capacity and electrical drawings
- Preferred charger brand, connectors and backend platform
- Number of initial bays, expansion target and delivery programme
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.