TEDAŞ-MLZ/2006-052.B Prefabrik Dağıtım Merkezi ve YG/AG Dağıtım Transformatör Merkezi Binaları Teknik Şartnamesi

Overview

This technical specification covers the design, manufacture and test of empty precast concrete buildings for MV distribution centres and MV/LV distribution transformer centres up to 36 kV (Clause 1, Scope). It was issued by Turkiye Elektrik Dagitim A.S. (TEDAS); the first issue dates from April 2006 and the current revision from September 2020.

The specification ties building design to the power installations, earthing, seismic and fire-protection regulations. It gives detailed rules on cable entries: modular cable entries must achieve IP 68 (24 h at 0.1 bar) to IEC 60529, proven by accredited test reports (5.4.12). On internal arc, if an operator-accessible space exists behind the switchgear, it is closed with 2 mm sheet up to switchgear height, and the switchgear rear must be at most 100 mm from the wall.

The document was written for TEDAS grid distribution buildings; whether it applies directly to a data centre's own MV substation depends on the project specification and the authority concerned. Even so, its cable-entry, internal-arc and operating-corridor details are a useful reference for data centre MV transformer buildings. Related standards are IEC 62271-200 and IEC 62271-202.

Key points

1. Covers design, manufacture and test of empty precast concrete buildings for MV distribution and MV/LV transformer centres up to 36 kV.
2. Design must comply with the power installations, earthing, seismic and fire-protection regulations.
3. Modular cable entries must achieve IP 68 (24 h at 0.1 bar) to IEC 60529, proven by accredited test reports.
4. If an operator-accessible space exists behind switchgear, it is closed with 2 mm sheet up to switchgear height against internal arc.
5. Switchgear rear to wall is at most 100 mm.
6. The current revision is dated September 2020; first issue April 2006.
7. Related: IEC 62271-200, IEC 62271-202, the Elektrik Kuvvetli Akim Tesisleri Yonetmeligi.

Using it in design

• When placing a prefabricated substation, apply the IP 68 cable-entry and internal-arc layout rules (rear clearance of 100 mm or less, or closed).
• Link the building to the seismic and fire checks.
• Confirm with the distribution company and the project specification whether the specification applies directly to the data centre's MV building.

Who should read it

Electrical engineers designing or specifying MV substations and prefabricated transformer buildings for data centres in Turkey.

Related standards

• IEC 62271-200
• IEC 62271-202
• Elektrik Kuvvetli Akım Tesisleri Yönetmeliği

Publication details

Authors

Türkiye Elektrik Dağıtım A.Ş. (TEDAŞ)

Publisher

Türkiye Elektrik Dağıtım A.Ş. (TEDAŞ)

Year

2020

Document number

TEDAŞ-MLZ/2006-052.B

Document language

Turkish

Source type

Turkish regulation

Access

Free to read

Licence

Copyright retained; citation only — the publisher’s terms apply to the original document

Citation