The Turkistan Project is a mixed-use urban development in Turkistan, Kazakhstan, combining residential, commercial and public spaces. Devpan supplied the low-voltage main and sub-distribution infrastructure.
Electrical Profile of the Project
- LocationTurkistan, Kazakhstan
- Building typeMixed use
- Installed power≈ 6,400 kVA
- Transformer configuration4 × 1,600 kVA
- Main busbar rated current2 × 3,200 A
- Short-time withstand current (Icw)65 kA / 1 s
- Devpan scopeLow voltage switchboards, engineering and site coordination
- Verification standardIEC 61439-1, IEC 61439-2
About the Project
In mixed-use developments, very different functions share one electrical backbone: shops and offices set the load profile by day, homes and outdoor lighting in the evening. Turkistan’s summer temperatures, often above 40 °C, add a substantial cooling load, while the dry, dusty climate makes switchroom ventilation and maintenance planning important. Buildings are usually energised in phases, so the distribution system has to be designed from the outset for later extension.
A typical solution at this scale uses approximately 4 × 1,600 kVA transformers fed from the 10 kV network and split into two independent main distribution groups. DevPanel boards with a 2 × 3,200 A main busbar and Form 4a-4b segregation allow one outgoing circuit to be maintained while the rest stay live. DevBox and DevPower boards handle distribution at block, floor and landscape lighting level, and DevComp panels balance the power factor of a cooling-heavy load. Generators of around 2 × 1,250 kVA back up life-safety and common-area loads.
Devpan Scope and Switchboard Architecture
Devpan’s scope covers low-voltage distribution from the transformer outputs to block and landscape lighting boards.
- Main distribution boards (DevPanel): 2 × 3,200 A main busbar, 65 kA / 1 s, Form 4a-4b, bus coupler and generator changeover.
- Sub-distribution boards (DevBox): floor and zone boards for residential blocks, retail units and common areas.
- Lighting and power panels (DevPower): timer and photocell-controlled circuits for street, plaza and landscape lighting.
- Power factor correction (DevComp): automatic stepped compensation for air-conditioning-dominated loads.
Technical Configuration
| Installed power | ≈ 6,400 kVA |
|---|---|
| Transformer configuration | 4 × 1,600 kVA |
| Medium voltage level | 10 kV |
| Low voltage / frequency | 400 / 230 V, 50 Hz |
| Main busbar rated current | 2 × 3,200 A |
| Short-time withstand current (Icw) | 65 kA / 1 s |
| Form of internal separation | Form 4a – Form 4b |
| Degree of protection (IP) | IP31 – IP41 |
| Generator back-up | 2 × 1,250 kVA |
| Verification standard | IEC 61439-1, IEC 61439-2 |
Devpan Products Used in This Project
Project-Specific Engineering Topics
Phased energisation
Spare outgoing ways in the main boards let new blocks be connected without shutting down the operating development.
Load diversity
Residential, retail and public areas peak at different times, so diversity factors allow the transformer capacity to be used efficiently.
Hot, dusty climate
Switchrooms use filtered ventilation, and busbar sizing applies derating factors for high ambient temperatures.
Outdoor lighting control
Landscape and street lighting is managed by astronomical timers and photocells to reduce energy consumption.
Frequently Asked Questions
What is the installed power of a mixed-use development on the scale of the Turkistan Project?
For a mixed-use urban development of this scale the installed power is approximately 6,400 kVA, with a typical transformer configuration of 4 × 1,600 kVA. The main busbar is typically rated 2 × 3,200 A with a withstand of 65 kA / 1 s, and the medium-voltage level is 10 kV.
Why choose Form 4a-4b segregation?
Form 4 separates each outgoing unit and its terminals into their own compartments, so work can be done on one tenant’s circuit while the other sections remain energised.
Which loads do the generators supply?
Typically generators of around 2 × 1,250 kVA feed lifts, fire pumps, emergency lighting, security systems and common-area services.
Similar Reference Projects
SKP Daho ProjectMixed use · Uzbekistan
Skopje Multi-Purpose Development ProjectMixed use · Skopje, North Macedonia
ENKA Palmiye ProjectMixed use · Do you have a project of a similar scale?
Send us your single-line diagram, your transformer rating or simply your load list. Our engineering team runs the short-circuit and discrimination study and defines the form of separation and busbar cross-section with you.
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