Construction of Mechanical Biological Treatment Facility in Gaziantep Turkey Section 5A - Schedule of Requirements and Technical Specifications Subsection 9: Electrical Works 1 of 102 SECTION 5A-Subsection 9: Electrical Works TABLE OF CONTENTS SECTION 5A-Subsection 9: Electrical Works .......................................................................... 1 TABLE OF CONTENTS ............................................................................................................. 1 9 ELECTRICAL WORKS .............................................................................................. 7 9.1 General ............................................................................................................................. 7 9.1.1 System of Units ................................................................................................................ 7 9.1.2 Design Temperature – ambient conditions ...................................................................... 7 9.1.3 Degree of Protection ........................................................................................................ 7 9.1.4 Condensation ................................................................................................................... 7 9.1.5 Voltages ........................................................................................................................... 8 9.1.6 Marking ............................................................................................................................ 8 9.2 Scope of Works ................................................................................................................ 8 9.2.1 Works to be carried out by the Contractor ....................................................................... 8 9.3 Standards .......................................................................................................................... 9 9.3.1 Regulations ...................................................................................................................... 11 9.3.2 Technical Specifications of TEDAS ................................................................................ 11 9.4 Hazardous Area Classification and Ex-proof Equipment ................................................ 12 9.5 High Voltage Switchgear and Transformer Stations ....................................................... 13 9.5.1 General ............................................................................................................................. 13 9.5.2 Power circuit breakers and disconnectors ........................................................................ 15 9.5.3 Transformers .................................................................................................................... 16 9.5.3.1 Dry type transformers: ....................................................................................................................... 18 9.5.3.2 Testing and commissioning................................................................................................................ 19 9.5.4 Instruments&Power Analyzers ........................................................................................ 19 9.5.5 Earthing system ................................................................................................................ 20 9.6 Diesel Generating Set ...................................................................................................... 21 9.6.1 General ............................................................................................................................. 21 9.6.2 Prime mover ..................................................................................................................... 22 9.6.2.1 Fuel System ........................................................................................................................................ 22 9.6.2.2 Fuel Specification .............................................................................................................................. 22 9.6.2.3 Combustion Air .................................................................................................................................. 22 9.6.2.4 Lubrication System ............................................................................................................................ 23 9.6.2.5 Exhaust System .................................................................................................................................. 23 Construction of Mechanical Biological Treatment Facility in Gaziantep Turkey Section 5A - Schedule of Requirements and Technical Specifications Subsection 9: Electrical Works 2 of 102 9.6.2.6 Starting System .................................................................................................................................. 23 9.6.2.7 Cooling System .................................................................................................................................. 24 9.6.2.8 Speed Control ..................................................................................................................................... 24 9.6.3 Alternator ......................................................................................................................... 24 9.6.3.1 Automatic Voltage Regulator ............................................................................................................ 24 9.6.3.2 Arrangement of the Diesel Generator Set .......................................................................................... 24 9.7 Assemblies (Panels) ......................................................................................................... 25 9.7.1 General requirements ....................................................................................................... 25 9.7.2 Construction ..................................................................................................................... 25 9.7.3 General electrical requirements ....................................................................................... 26 9.7.4 Access .............................................................................................................................. 27 9.7.5 Internal wiring .................................................................................................................. 27 9.7.6 Terminations .................................................................................................................... 27 9.7.7 Earthing ............................................................................................................................ 27 9.7.8 Transient and surge protection equipment ....................................................................... 27 9.7.9 Busbars ............................................................................................................................. 28 9.7.10 Assembly ventilation ....................................................................................................... 28 9.7.11 Circuit breakers (CBs) ..................................................................................................... 28 9.7.12 Earth leakage circuit breakers .......................................................................................... 29 9.7.13 Isolating switches ............................................................................................................. 29 9.7.14 Motor controllers ............................................................................................................. 30 9.7.15 Frequency converter motor controllers ............................................................................ 36 9.7.16 Motor valve controllers .................................................................................................... 38 9.7.17 Control panels for local functions .................................................................................... 38 9.7.17.1 Local Pad-lockable Stop Switch: ....................................................................................................... 39 9.7.17.2 Emergency Stops: .............................................................................................................................. 39 9.7.18 Labelling and marking ..................................................................................................... 40 9.8 Electrical Installations ...................................................................................................... 40 9.8.1 Lighting ............................................................................................................................ 40 9.8.2 Outdoor lighting equipment ............................................................................................. 41 9.8.3 Emergency lighting .......................................................................................................... 42 9.8.4 Socket outlet stations ....................................................................................................... 42 9.8.5 Uninterruptible power supply (UPS) ............................................................................... 43 9.8.6 Earthing system and equipotential bonding ..................................................................... 44 9.8.7 Lightning and Overvoltage Protection ............................................................................