Elektrik Kuvvetli Akım Tesisleri Yönetmeliği (Turkish Regulation on Power Installations)

Overview

The Regulation on Power (Strong-Current) Installations governs the construction, operation and maintenance of power installations for the safety of life and property. It was published in Official Gazette no. 24246 on 30.11.2000 by the Ministry of Energy and Natural Resources. It chiefly concerns MV substations, transformer rooms and cables. Installations falling under the Regulation on Electrical Internal Installations are excluded.

Data-centre MV rooms and client substations fall under it. Under Article 8(a), earthing of power installations follows the Regulation on Earthing in Electrical Installations. Article 10 requires apparatus to be type-tested to the applicable TS, otherwise to EN, HD, IEC or VDE, in that order. Under Article 39, each power transformer has breakers with secondary protection on its primary and secondary sides, rated for the short-circuit power of the LV busbar.

Article 40(a) sets the criteria for transformer protection: distribution transformers up to 400 kVA are protected by fused disconnectors on the input side; above 400 kVA protection is by a relay-operated circuit-breaker, or by a fused load-break switch up to 1,600 kVA. Under Article 37(a), distribution transformer rooms must be ventilated, with forced ventilation where natural ventilation cannot be achieved. These criteria feed directly into selecting the MV incoming cubicle and protection equipment by transformer rating. The ventilation article requires the effect of transformer losses on room temperature to be accounted for in design.

The information used here rests only on the record's article summaries; the full text of the regulation was not read. Current binding provisions should be checked in the official text at mevzuat.gov.tr. The regulation should therefore be used with article numbers and verified against the current text. Articles not in the record have not been interpreted here.

Key points

1. Covers construction, operation and maintenance of power installations for safety of life and property; installations under the Regulation on Electrical Internal Installations are excluded (Article 1).
2. Earthing of power installations follows the Regulation on Earthing in Electrical Installations (Article 8(a)).
3. Apparatus must be type-tested to applicable TS, otherwise EN, HD, IEC or VDE in that order (Article 10).
4. Distribution transformers up to 400 kVA are protected by fused disconnectors on the input side (Article 40(a)).
5. Above 400 kVA a relay-operated circuit-breaker is used, or a fused load-break switch up to 1,600 kVA (Article 40(a)).
6. Each power transformer has breakers on primary and secondary sides rated for the LV busbar short-circuit power (Article 39).
7. Distribution transformer rooms must be ventilated, with forced ventilation where natural ventilation is not achievable (Article 37(a)).

Using it in design

• In the MV module (TR profile), select transformer primary protection automatically: fused load-break switch up to 400 kVA, fused load-break switch or relay-operated breaker up to 1,600 kVA, relay-operated breaker above.
• Add a transformer-room ventilation calculation based on transformer losses, with forced ventilation where natural ventilation is not achievable.
• Use the LV busbar short-circuit power as the rating input when selecting breakers.
• Put the TS, EN, HD, IEC, VDE order into the checklist for type-test requirements when selecting apparatus.

Who should read it

Electrical engineers designing data centre MV rooms, transformer substations and cable installations in Turkey.

Related standards

• IEC 62271-200
• Elektrik Tesislerinde Topraklamalar Yönetmeliği
• TEDAŞ-MLZ/99-032.E

Publication details

Authors

T.C. Enerji ve Tabii Kaynaklar Bakanlığı

Publisher

T.C. Enerji ve Tabii Kaynaklar Bakanlığı

Year

2000

Document number

RG 24246 (30.11.2000)

Document language

Turkish

Source type

Turkish regulation

Access

Free to read

Licence

Bibliographic reference only — the document is not redistributed here; confirm reuse terms at the original source

Citation