Uzbekistan Lot 2 Shopping Mall brings retail units, common areas and a heavy HVAC load under one roof. Devpan supplied the main distribution, MCC, power factor correction and tenant boards for the project.
Electrical Profile of the Project
- LocationUzbekistan
- Building typeShopping mall
- 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
Shopping centres in Uzbekistan run a substantial HVAC load all year round, with summer temperatures regularly above 40 °C and cold continental winters. When chillers, air handling units, escalators and lifts start together, voltage drop and reactive power demand rise sharply. Voltage fluctuations and short interruptions that can occur on the regional 10 kV network are more than an inconvenience in a mall: they affect visitor safety, tenant trading and the operation of life-safety systems.
For a mall of this scale, a typical answer is a main distribution board rated 2 × 3,200 A, fed by four 1,600 kVA transformers and split into two sections by a bus coupler. Mechanical loads are grouped in DevControl motor control centres, while tenant and common-area loads are handled by DevBox sub-distribution boards. Two 1,250 kVA generators prioritise emergency lighting, smoke extraction and fire pumps, and DevComp panels keep the power factor within utility limits.
Devpan Scope and Switchboard Architecture
Devpan’s scope covers the whole low-voltage distribution chain, from transformer incomers down to tenant metering boards.
- Main distribution boards (DevPanel): 2 × 3,200 A, 65 kA / 1 s, Form 4a – Form 4b, with bus coupler and generator changeover.
- Motor control centres (DevControl): starters and drive feeders for chillers, AHUs, escalators and pump sets.
- Power factor correction (DevComp): detuned, stepped reactive power compensation.
- Sub-distribution boards (DevBox): metered supplies for retail units, the food court and parking levels.
- Lighting and power panels (DevPower): common-area, façade and emergency lighting circuits.
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
Tenant metering
Each retail unit is supplied from its own metered outgoing way, so consumption can be billed and a fault in one unit stays local.
HVAC load management
Chillers and air handling units are started in stages, keeping inrush currents from stressing the transformers.
Fire-mode supplies
Smoke extraction fans and fire pumps are fed from separate generator-backed sections through fire-resistant cabling.
Harmonic control
Drives, LED lighting and tenant electronics generate harmonics; detuned DevComp panels limit their effect on the network.
Frequently Asked Questions
What is the installed power for the Uzbekistan Lot 2 Shopping Mall?
For a shopping mall 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 planned at 2 × 3,200 A on a 10 kV MV supply, with standby power from 2 × 1,250 kVA generators.
Why is Form 4 separation used in mall switchboards?
Form 4a – Form 4b separation lets technicians work on one outgoing way while adjacent functional units stay live. Tenant fit-outs and maintenance can then proceed without closing the mall.
Which loads move to the generators during an outage?
Emergency lighting, fire and smoke control systems, lifts and security systems come first. As capacity allows, common-area lighting and selected tenant loads are reconnected in steps.
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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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