33 11 Substations

THE REPUBLIC OF IRAQ
MINISTRY OF ELECTRICITY (MoE)
ENERGY DISTRIBUTION OFFICE
Construction of 33/11kV Substations
(2 x 31.5 MVA)
Section (1)
TECHNICAL SPECIFICATIONS
Rev. 0 March 2012

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Table of Contents
Part-1 General Specification
Section-1.1 : Project Description
1.1.1 Scope of Work
1.1.2 Deleted
1.1.3 Implementation Program
1.1.4 Deleted
1.1.5 Technical Documents
1.1.6 TrainingError! Bookmark not defined.
1.1.7 Tests and Inspections
1.1.8 Packing for Shipmen
1.1.9 Delivery
1.1.10 Guarantee by the Contractor
Part-2 General Technical Design Data
Section-2.1: General Technical Specification
2.1.1 Standards and Design Conditions
2.1.2 Design, Material and Workmanship
2.1.3 Phase Arrangement of Electrical Equipment
2.1.4 Color Identification of Electrical Conductors and Equipment
2.1.5 Control and instrument wiring and terminal boards
2.1.6 : Identification of wires
Part-3 Particular Requirement for Substation equipment
Section-3.1: 33 kV Metal-Clad Switchgear
3.1.1 General
3.1.2 General Arrangement
3.1.3 Degree of protection
3.1.4 Current Rating
3.1.5 Bus-bars and connection
3.1.6 Circuit breakers
3.1.7 Disconnector
3.1.8 Earthing Switch
3.1.9 Lightning arrester
3.1.10 Low tension and control circuit and equipment

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3.1.11 Indicators and alarms
3.1.12 Instrument and protection
3.1.13 Instruments and relays
3.1.14 Protection
Section-3.2: 33/11.5kV 31.5MVA Power Transformer
3.2.1 General
3.2.2 Characteristics of the transformers
3.2.3 Cable Boxes(Air insulated type)
3.2.4 Fittings and Accessories
3.2.5 Painting
3.2.6 Tolerance
3.2.7 Labels, Rating plates
3.2.8 On load tap changer
3.2.9 Control and instrument wiring and terminal boards
3.2.10 Insulating oil
3.2.11 Continuous Maximum Rating, temperature rise and overload
3.2.12 Short circuit guarantee
3.2.13 Insulation levels
3.2.14 Loss Evaluation and Penalty
3.2.15 Earthing resister and others of Transformer Neutral
3.2.16 Spare parts and special tools
Section-3.3: 11 kV Metal-Clad Switchgear
3.3.1 General
3.3.2 General Arrangement
3.3.3 Degree of protection
3.3.4 Current Rating
3.3.5 Bus-bars and connection
3.3.6 Circuit breakers
3.3.8 Earthing Switch
3.3.9 Deleted
3.3.10 Low tension and control circuit and equipment
3.3.11 Indicators and alarms
3.3.12 Instrument and protection
3.3.13 Instruments and relays
3.3.14 Protection
3.3.15 Capacitor Bank Interlocking
3.3.16 Interlocking of 11kV Bus Section Circuit Breaker

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Section-3.4: Remote control and indication
3.4.1 General
3.4.2.1 Controls/Commands
3.4.2.2 Status/Indication
3.4.2.3 Alarms
3.4.2.4 Analogue Measurements
3.4.3 Technical Requirements of transducers
Section-3.5: Substation Control System
3.5.1 General
3.5.2 Design Principles
3.5.3 System Architecture
3.5.4 System Functions
3.5.5 System Capacity
3.5.6 System Performance
3.5.7 Software Requirements
3.5.8 Hardware Requirements
3.5.9 Maintenance and Spares
3.5.10 Documentation
3.5.11 Warranty and Support
3.5.12 SCS Testing
3.5.13 Overall Signal Point List
Section-3.6: Wireless UHF Communication System
3.6.1 General
3.6.2 Remote Terminals
3.6.3 Coaxial cable for Antenna feeder
3.6.4 Antenna
3.6.5 Tower
Section-3.7: 11/0.416kV Auxiliary transformer
Section-3.8: Station DC System
3.8.1 General
3.8.2 110V System
3.8.3 Deleted
Section-3.9: Station LV AC System
Section-3.10: Cables
3.10.1 General
3.10.2 Medium Voltage Power Cables

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3.10.3 Low voltage Power Cables
3.10.4 Control & Auxiliary Cables
3.10.5 Termination of cables and wires
3.10.6 Cable installation requirement
3.10.7 Cable trays, racks, ladders and associated materials
3.10.8 Conduit and installation of conduit system
3.10.9 Painting
Section-3.11: Earthing System
Section-3.12 Inspection and Tests
3.12.1 General
3.12.2 Inspection and Tests
3.12.3 Test at manufacture's work
Part-4 Civil Specification
1. General
1.1 Scope of Work:
1.1.1 Extent of Work
1.1.2 Site Facilities for the Owner & Consultant / Contractor:
1.1.3 Standards and Design Criteria
1.1.4 Design Loading
1.1.5 Load Combinations and Factors of Safety
1.1.6 Submittals
1.1.7 Soil Investigations
1.1.8 Topography and Finished Grade Elevation
1.2 Clearing and Site Preparation
1.2.1 General
1.2.2 Clearing and Grubbing
1.2.3 Stripping of Topsoil
1.3 Excavation
1.3.1 General
1.3.2 Excavation for Foundations
1.3.3 Excavation for Underground Services
1.3.4 Excavation for Roads Areas
1.3.5 Disposal of Excavated Materials
1.4 Fill and Back Fill
1.4.1 Materials
1.4.2 Workmanship