Ref. Ares(2021)2862184 - 29/04/2021 1 of 124  Construction of Giresun Wastewater Treatment Plant  Tender Dossier Volume 3 Employer’s Requirements  Section 08: Electrical Works  TABLE OF CONTENTS 8$_{ }$ ELECTRICAL WORKS ..............................................................................................6$_{ }$ 8.1 General .................................................................................................................................. 6 8.1.1 System of Units ..................................................................................................................... 6 8.1.2 Design Temperature .............................................................................................................. 6 8.1.3 Degree of Protection ............................................................................................................. 6 8.1.4 Condensation......................................................................................................................... 6 8.1.5 Voltages ................................................................................................................................ 7 8.1.6 Marking................................................................................................................................. 7 8.2 Scope of Works ..................................................................................................................... 7 8.2.1 Works to be carried out by the Contractor ............................................................................ 7 8.3 Standards............................................................................................................................... 8 8.3.1 Regulations............................................................................................................................ 10 8.3.2 Technical Specifications of TEDAS ..................................................................................... 10 8.4 Hazardous Area Classification and Ex-proof Equipment ..................................................... 11 8.5 High Voltage Switchgear and Transformer Stations............................................................. 12 8.5.1 General .................................................................................................................................. 12 8.5.2 Power circuit breakers and disconnectors ............................................................................. 13 8.5.3 Transformers ......................................................................................................................... 15 8.5.4 Instruments & Power Analyzers ........................................................................................... 18 8.5.5 Earthing system..................................................................................................................... 18 8.6 Diesel Generating Set............................................................................................................ 19 8.6.1 General .................................................................................................................................. 19 8.6.2 Prime mover .......................................................................................................................... 20 8.6.3 Alternator .............................................................................................................................. 23 8.7 Assemblies (Panels) .............................................................................................................. 23 8.7.1 General requirements ............................................................................................................ 24 8.7.2 Construction .......................................................................................................................... 24 8.7.3 General electrical requirements............................................................................................. 25 8.7.4 Access ................................................................................................................................... 25 8.7.5 Internal wiring....................................................................................................................... 26 8.7.6 Terminations ......................................................................................................................... 26 8.7.7 Earthing................................................................................................................................. 26 VOLUME 3  SECTION 08: Electrical Works 8_Vol3_d4 3_Section 8 electrical works_en_GIR rev6.doc 