Energizing the 320kVA kiosk transformer station

To meet the increasing demand for electricity, ensuring a stable and safe power supply is extremely important. QuangAnhcons, with its deep understanding of practical needs and electrical engineering, has constructed and completed a 320kVA kiosk transformer station at 600 Dien Bien Phu, Binh Thanh District, Ho Chi Minh City, to power the office building located there.

The construction process of QuangAnhcons’ 320kVA kiosk transformer station included the following key steps:

– Using a 3M50mm2 underground cable to connect the VCB compartment of the 24KV VRAC medium voltage cabinet with 6 compartments to the transformer station, providing a continuous and stable power supply to the city’s electrical grid.

The specifications of the 6-compartment RMU cabinet are as follows:

– KKT: A 3-function cabinet – 2 LBS 630A load break switches and 1 LBS 630 load break switch + fuse.
– KKV: A 3-function cabinet – 2 LBS 630A load break switches and 1 VCB circuit breaker.

The specifications of the 24KV VCB 1-compartment cabinet:

– SF6 insulation, DS 630A disconnector, VCB 200A breaker.
– Vacuum interruption environment and SF6 insulation environment.
– Relays 50/51; 50N/51N, external power source 24VDC, CTs 600/1A 5P20, 220VAC 50W heating unit.

The construction also included the installation of a new 3M50mm2 medium-voltage underground cable head, a 3P 5A-220/380V electricity meter; three low-voltage 500/5A TI for energy measurement at the transformer station, and the reuse of a 3P 500A 0.6KV MCCB for low-voltage switching.

The completion of the 320kVA transformer station, full testing of the transformer station before acceptance, and powering up the kiosk transformer station 320kVA to supply electricity to the building were also key components of the project.

The construction of the 320kVA kiosk transformer station at 600 Dien Bien Phu is not only a testament to QuangAnhcons’ capability in construction and project management but also marks a new step in meeting the needs for developing electrical infrastructure in modern cities. With the completion of this construction project, QuangAnhcons affirms its position as a leader in the construction and renovation of medium and low voltage electrical systems and transformer stations, as well as electric vehicle fast-charging stations up to 35kV, aiming towards sustainable community development. We are proud to offer optimal technical solutions that ensure safety and efficiency. For more detailed information about QuangAnhcons’ services and project consultancy, please contact us via the hotline: +84 9 1975 8191.

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Substation budget estimate

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01 Quick estimate

Substation type Capacity (kVA) Quotation packageIndicative pricing for the selected configuration, excluding VAT. Transformer Overhead MV route length (m)Enter only the overhead section of the route.

Cable and power-factor correction conditions

kVA utilisation before correction (%)Percentage of rated apparent power before correction. Cables and breakers are still selected at transformer rated capacity. Single-core LV cable Transformer-to-breaker installation Ambient temperature (°C)Underground: soil temperature. Above ground: air temperature. Target cosφ after correction cosφ before correctionKeep the suggested value if measured data is unavailable. Transformer impedance uk (%)Use the nameplate value when available.

Live-line connection, multiple transformers/MV feeders or special installation conditions

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Quotation package Contact name * Phone / Zalo * EmailOptional if you prefer a reply by phone. Company / investor Project location * Project name Transformer / total substation capacity (kVA) Substation type Number of transformers Utility supply voltage MV route type Overhead MV (m) Underground MV (m) Target schedule

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Quotation scope

Applies to one EVN-supplied substation with oil-immersed transformers at 22/0.4 kV (single-phase: 12.7/0.23 kV), with MV metering VTs/CTs supplied by EVN. The estimate includes the selected equipment, installation, earthing, transformer-to-main-breaker connections, design and connection documentation, and coordination of testing and utility acceptance.

Kiosk, integrated steel-pole and indoor substations include MV switchgear and the entered underground cable route. Other outdoor arrangements use the relevant protection configuration. The final diagram must meet the project connection requirements.

Excludes VAT, cables from the substation switchboard to the MSB/loads, live-line work, harmonic reactors, weak-ground treatment or special piling, land and special fire-protection provisions. Underground routes assume normal construction conditions and exclude road drilling and special reinstatement.

Prices are indicative investment budgets. A formal quotation follows site assessment and agreement on the configuration. Electrical selections are preliminary and require design verification before installation.

Capacity range and application conditions

The catalogue defines the enquiry range of this tool, not universal TCVN capacity limits. Single pole-mounted transformers: 15–100 kVA; three-unit banks: 3×15–3×100 kVA. Platform substations: 100–630 kVA. Steel-pole substations: 100–630 kVA; 750/800 kVA require design verification and local approval. Ground-mounted, kiosk and indoor configurations: 50–10,000 kVA. Not every configuration has a package price or the same structural design.

Reference: EVN Decision 1299/QD-EVN dated 3 November 2017, Volume 1, sections 3.3–3.4. Check the current requirements of the responsible utility before implementation. Kiosks must meet manufacturer ratings and testing requirements (IEC 62271-202); indoor and ground-mounted arrangements must meet project layout, ventilation, structural and fire-protection requirements. For multiple transformers, specify the quantity and capacity of each unit.

Dự án

Energizing the 320kVA kiosk transformer station – QuangAnhcons

The construction process of QuangAnhcons’ 320kVA kiosk transformer station included the following key steps:

The specifications of the 6-compartment RMU cabinet are as follows:

The specifications of the 24KV VCB 1-compartment cabinet:

Substation budget estimate

The construction process of QuangAnhcons’ 320kVA kiosk transformer station included the following key steps:

The specifications of the 6-compartment RMU cabinet are as follows:

The specifications of the 24KV VCB 1-compartment cabinet:

Substation budget estimate

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