Skopje Limak Hotel is a city hotel in Skopje operated to international standards. On this project Devpan supplied the main distribution boards, the guest room floor boards and the verification file compliant with European standards.
Electrical Profile of the Project
- LocationSkopje, North Macedonia
- Building typeHotel and hospitality
- 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
On projects carried out in the Balkans the technical specifications are based on European norms; the boards are expected to be verified to the EN 61439 series and handed over with a CE declaration of conformity. That is not merely a question of paperwork: the verification method shapes the switchboard design itself.
At Skopje Limak Hotel the design is built around a verification chain based on a type-tested reference. The busbar cross-section, the support spacing and the temperature rise calculation are kept within the limits of the reference design. On the electrical side the guest room blocks, the kitchen, the meeting rooms and the technical areas are fed from separate branches, and the medium voltage level within the facility is 10 kV.
Devpan Scope and Switchboard Architecture
The Devpan scope reaches from low voltage main distribution to the guest room floor boards and the technical area supplies.
- Main distribution boards (DevPanel): 1,600 A class, 50 kA / 1 s, main distribution with Form 3b internal separation.
- Guest room floor boards (DevBox): Separately protected supply and local metering for each room group.
- Kitchen, laundry and meeting room branches: Separately metered supply and stage lighting outgoing ways.
- Power factor correction (DevComp): Automatic stepped compensation with detuned reactors.
- Verification file: Design verification references to the EN 61439 series together with the declaration of conformity.
Technical Configuration
| Installed power | ≈ 2,500 kVA |
|---|---|
| Transformer configuration | 2 × 1,250 kVA |
| Medium voltage level | 10 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
The EN 61439 verification chain
The board rests on a verification chain in which the type-tested reference and the design rules are used together; the file shows which clause is satisfied by which method.
Temperature rise verification
The temperature rise calculation, made from the power losses and the enclosure surface area, is checked so that it stays within the verified limits of the reference design.
Separating guest rooms from public areas
Guest room blocks and the lobby, restaurant and meeting rooms are fed from separate branches, so work in a public area does not affect the guest rooms.
Meeting room lighting
Dimmer-controlled room lighting generates harmonics; this branch is protected separately and the compensation is selected with detuned reactors.
Frequently Asked Questions
What does EN 61439 verification change in practice?
It changes the design itself. Verification requires showing that the board is derived from a type-tested reference within the permitted limits, which means that decisions such as busbar cross-section, support spacing, enclosure ventilation and component layout must stay tied to the reference design.
What is the installed power at Skopje Limak Hotel?
A city hotel 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 and the medium voltage level within the facility is 10 kV.
Which documents are requested on projects abroad?
Three groups of documents are usually asked for: the design verification file with the type test references, the declaration of conformity and the site test reports. In addition, the material list and component certificates may be requested, which is why the documentation is prepared in parallel with manufacture.
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