İstanbul Seba Suit is a serviced apartment project made up of a high density of small units. On this project Devpan produced the main distribution boards, the metering panels suited to a high consumer density and the common service supply branches.
Electrical Profile of the Project
- LocationIstanbul, Türkiye
- Building typeResidential complex
- Installed power≈ 2,500 kVA
- Transformer configuration2 × 1,250 kVA
- Main busbar rated current2 × 1,600 A
- Short-time withstand current (Icw)50 kA / 1 s
- Devpan scopeLow voltage switchboards, engineering and site coordination
- Verification standardIEC 61439-1, IEC 61439-2
About the Project
In serviced apartment buildings the number of individual units is appreciably higher than in a conventional residential project of the same total floor area. Each unit draws little power, but there are many of them. What governs the design is therefore not the total installed power but the number of meters and outgoing ways.
At İstanbul Seba Suit the floor metering panels are designed to accommodate a large number of small outgoing ways in an orderly and accessible arrangement. Because the operating model is close to that of a hotel, common services such as reception, the laundry and housekeeping are collected on a separate branch. The diversity factor differs from conventional housing: the units are small, so peak load is spread more evenly, while the common service load runs continuously.
Devpan Scope and Switchboard Architecture
The Devpan scope reaches from main distribution to the floor metering panels and the common service branches.
- Main distribution boards (DevPanel): 1,600 A class, 50 kA / 1 s, main distribution with Form 3b internal separation.
- Floor metering panels (DevBox): An accessible meter layout suited to a high density of outgoing ways.
- Common service branch: Separately metered supply for reception, laundry, stores and housekeeping.
- Power factor correction (DevComp): Stepped compensation matched to the continuously running common service load.
- Common area panels (DevPower): Corridor, lobby, car park and emergency lighting circuits.
Technical Configuration
| Installed power | ≈ 2,500 kVA |
|---|---|
| Transformer configuration | 2 × 1,250 kVA |
| Medium voltage level | 34.5 kV |
| Low voltage / frequency | 400 / 230 V, 50 Hz |
| Main busbar rated current | 2 × 1,600 A |
| Short-time withstand current (Icw) | 50 kA / 1 s |
| Form of internal separation | Form 3b |
| Degree of protection (IP) | IP31 – IP41 |
| Generator back-up | 1 × 800 kVA |
| Verification standard | IEC 61439-1, IEC 61439-2 |
Devpan Products Used in This Project
Project-Specific Engineering Topics
Board layout at high outgoing way density
In boards carrying a large number of small outgoing ways the governing factor is not current but the number of ways and their accessibility. The meter layout is arranged around ease of reading and intervention.
Common services in a hotel-like operation
The laundry and housekeeping services run throughout the day; that continuous load is collected on a separate branch so that it is both metered and compensated to its own sizing.
Diversity factor in small units
Because the power drawn per unit is low, peak load spreads more evenly over time; the diversity factor is therefore selected differently from conventional residential projects.
Corridor and escape lighting
Given the high circulation of users, corridor and escape lighting is protected separately and collected on a branch whose supply continues under a fire scenario.
Frequently Asked Questions
What governs switchboard design in serviced apartment buildings?
The number of outgoing ways and meters, not the total power. The units are small but numerous, so what matters in the floor boards is not the current rating but the orderly arrangement of outgoing ways and easy access to the meters.
What is the installed power at İstanbul Seba Suit?
A serviced apartment project of this scale has an installed power of approximately 2,500 kVA, with a typical transformer configuration of 2 x 1,250 kVA. The main busbar is rated at 2 x 1,600 A with a short-time withstand current of 50 kA / 1 s.
Why are common services metered separately?
Because the operating model is close to a hotel and the cost of common services is managed separately from the individual units. When the laundry, reception and housekeeping are collected on a dedicated branch, cost tracking becomes clear and the compensation for that continuous load can be sized correctly.
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Tempo City SuryapıMixed use · Istanbul, TürkiyeDo 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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