İstanbul Suryapı Topkapı is a residential project set in a dense urban fabric close to the historic peninsula. On this project Devpan manufactured the main distribution and block boards with the enclosures split to suit restricted transport and installation conditions.
Electrical Profile of the Project
- LocationIstanbul, Türkiye
- Building typeResidential complex
- Installed power≈ 4,800 kVA
- Transformer configuration3 × 1,600 kVA
- Main busbar rated current2 × 2,500 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
On inner-city projects switchboard design is governed not only by electrical requirements but by access to the site. Narrow streets, limited crane access and restricted working hours usually make it impossible to bring a large board down to the switchroom in one piece.
At Suryapı Topkapı the main distribution board is manufactured in sections sized for transport and for the lift and stair dimensions. The busbar connection points to be joined on site are planned so that the installation sequence is completed with the least possible labour. The block boards are resolved with the standard residential architecture; rising mains and the meter layout are sized for the high number of consumers.
Devpan Scope and Switchboard Architecture
The Devpan scope reaches from sectionalised main distribution to the block and floor boards. Site logistics is a governing input to the design.
- Main distribution boards (DevPanel): 2,500 A class, 65 kA / 1 s, main distribution manufactured in sections sized for transport.
- Site jointing details: Busbar connection points and enclosure joining components prepared during manufacture.
- Block and floor metering panels (DevBox): Sub-distribution suited to a dense consumer structure.
- Power factor correction (DevComp): Automatic stepped compensation with detuned reactors.
- Common area and car park panels (DevPower): Lighting, jet fan and emergency lighting circuits.
Technical Configuration
| Installed power | ≈ 4,800 kVA |
|---|---|
| Transformer configuration | 3 × 1,600 kVA |
| Medium voltage level | 34.5 kV |
| Low voltage / frequency | 400 / 230 V, 50 Hz |
| Main busbar rated current | 2 × 2,500 A |
| Short-time withstand current (Icw) | 65 kA / 1 s |
| Form of internal separation | Form 3b – Form 4a |
| Degree of protection (IP) | IP31 – IP41 |
| Generator back-up | 2 × 1,000 kVA |
| Verification standard | IEC 61439-1, IEC 61439-2 |
Devpan Products Used in This Project
Project-Specific Engineering Topics
Sectionalising the enclosure for transport
The board is divided into sections against the narrowest point of the access route to site. Because the division is made during manufacture, no cutting or adaptation is needed on site.
Site jointing and busbar continuity
Busbar connections between sections are designed to limit contact resistance and temperature rise; tightening torques and jointing surfaces are defined in the manufacturing instruction.
Installation plan under restricted working hours
On inner-city projects deliveries and installation are usually confined to set hours. The installation sequence is planned so that one section can be completed in each working window.
Meter layout for a dense consumer structure
Meter positions in the floor boards are arranged to speed up readings and changes of occupancy; labelling is tied to a single standard across the whole development.
Frequently Asked Questions
How are large switchboards moved into restricted sites?
The board is divided into sections during manufacture, against the narrowest point of the transport route. Busbar connection points and enclosure joining components are prepared in the factory, so only assembly and tightening take place on site, and no cutting or adaptation is needed there.
Is there a risk of overheating at busbar joints made on site?
There is if they are not designed properly. The cleanliness of the jointing surface, its surface treatment and the tightening torque determine contact resistance, and a high contact resistance leads to local heating. That is why joint details and tightening values are defined in the manufacturing instruction and verified on site.
What is the installed power at Suryapı Topkapı?
A residential project of this scale has an installed power of approximately 4,800 kVA, with a typical transformer configuration of 3 x 1,600 kVA. The main busbar is rated at 2 x 2,500 A.
Similar Reference Projects
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Tempo City SuryapıMixed use · Istanbul, Türkiye
İstanbul Yamanevler Avrupa KonutlarıResidential complex · 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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