Introduction section1: general requirements

CONTENTS

Clause
INTRODUCTION

1. 
   Scope
   
2. 
   Electricity supply
   
3. 
   Ambient conditions
   
4. 
   DEWA enrolment for consultants and electrical contractors
   
5. 
   Workmanship
   
6. 
   Standards for equipment and materials
   
7. 
   Prior approval for electrical works
   
8. 
   Application for getting electricity
   
9. 
   Power factor (PF) correction
   
10. 
    Under voltage (UV) relays with auto-reset timers.
    
11. 
    Harmonics and rapid voltage changes
    
12. 
    Inspection and testing of electrical installations
    
13. 
    Maintenance, periodic inspection and testing
    
14. 
    Extensions and alterations SECTION 2: DEFINITIONS
    

1. 
   General
   
2. 
   Point of supply
   
3. 
   Tariff metering
   

1. 
   General
   

2. 
   Cable And Conductors
   
   1. 
      Selection
      
   2. 
      Minimum Size of Conductors
      
   3. 
      Current Rating, Size And Voltage Drop
      
   4. 
      Colour Identification
      
   5. 
      Wiring Installation Exposed to High Temperatures
      
   6. 
      Wiring Installation In Hazardous Area
      
   7. 
      Load Balancing
      

3. 
   Wiring accessories and fittings
   
   1. 
      Conduits and fittings
      
   2. 
      Trunking
      
4. 
   Cable Trays & Supports
   

5. 
   Low Voltage Switch Gear and Control Gear Assemblies
   
   1. 
      Main& Sub-Main Distribution Boards
      
   2. 
      Final Distribution Boards
      

6. 
   Apparatus & Accessories
   
   1. 
      Switches
      
   2. 
      Plug and socket out lets
      
   3. 
      Cooker control units
      
   4. 
      Household and Similar Appliance
      
   5. 
      Control of Water Heaters/ sauna/ Washing Machines
      
   6. 
      Control of Air-Conditioning Unit/Equipment
      
   7. 
      Extra Low Voltage Safety Apparatus
      
   8. 
      H.V. Discharge Lighting Equipment
      
   9. 
      Safety and Emergency Light Fittings
      
   10. 
       Electric Motors and Starters
       
   11. 
       Stand-by Generators
       

7. 
   Assessment Of Connected Load And Maximum Demand
   
   1. 
      Lighting And Small Power Circuits
      
   2. 
      Maximum Demand
      

1. 
   Consumer’s Earthing System
   
2. 
   Consumer’s Main Earth Electrode
   
3. 
   Earth Continuity Conductor(ECC)
   
4. 
   Earth Leakage Protection
   
5. 
   Equipotential Bonding
   

1. 
   Trunking and Conduits
   
2. 
   Flexible conduits / Cable Trays
   

1. 
   Armoured Cable
   
2. 
   Distribution Boards
   
3. 
   Bus bar Trunking System (Busways)
   
4. 
   Wiring System And Accessories
   
   1. 
      Segregation of Circuits, Phases and Wiring System
      
   2. 
      Mounting Height of Accessories
      
   3. 
      Identification Labels and Notices
      

1. 
   Power Factor(PF) Correction
   
2. 
   Under Voltage(UV) Relays With Auto-Reset Timer
   

1. 
   General
   
2. 
   Wiring System and Distribution Boards
   
3. 
   Earth Leakage Protection
   

SECTION 10: DISTRIBUTED RENEWABLE RESOURCES GENERATION (DRRG)

1. 
   General
   

2. 
   System documentation requirements
   
   1. 
      Basic system information
      
   2. 
      System designer information
      
   3. 
      System installer, operation and maintenance information
      

3. 
   Wiring diagram, datasheets
   
   1. 
      Array – general specifications
      
   2. 
      PV string information
      
   3. 
      Array electrical details
      
   4. 
      Earthing & Overvoltage protection
      
   5. 
      AC electrical details, inbuilt and external protections
      

4. 
   Connection Agreement
   
5. 
   Operation & Maintenance (O&M) Contract
   
6. 
   Insurance
   
7. 
   Labelling & Identification
   
8. 
   Metering & Meter provisioning
   
9. 
   Inspection & Testing
   

1. 
   MV Network Design requirements (11-22 KV)
   
2. 
   General Requirements for Substation Construction within Private plot
   
3. 
   Substation Location & Access
   
4. 
   Substation Types and Area
   
5. 
   Substation Ventilation for Ground Floor
   
6. 
   Forced Ventilation(Only for basement transformer rooms)
   
7. 
   Methods of equipment transportation to Basement Transformer rooms
   
8. 
   Substation cable arrangement (subject to DEWA design)
   
9. 
   Direct 11kV Supply for High - Rise Towers above 200m / Industrial / Private Load
   
   1. 
      Intake arrangement and protection requirements
      
   2. 
      Power factor at point of supply should be maintained at 0.95 or higher.
      

1. 
   Compliance Requirements
   

2. 
   Specific regulations applied by DEWA
   
   1. 
      Elevators and escalators
      
   2. 
      Lighting power density – interior
      
   3. 
      Lighting power density – exterior
      
   4. 
      Lighting controls
      
   5. 
      Electronic ballasts
      
   6. 
      Smart Electricity metering
      
   7. 
      Central control and monitoring system
      
   8. 
      On-site renewable energy – small to medium scale embedded generators
      
   9. 
      On-site renewable energy – outdoor lighting
      

APPENDIX

1. 
   Reference Standards
   
2. 
   Contractors Inspection Certificate(Format)
   
3. 
   A-Typical arrangement of kWh meters in electric services room. B-Typical arrangement of metering cabinet on compound wall. C- Arrangement of metering in main LV panel.
   

D1- Typical electrical services room with 1 No. cubicle type LV. Switchboard /panel. D2- Two LV panels arrangement in LV switch room.
E – Typical electrical service room with 1 No. MDB (MAX. 400 AMPS RATING)

4. 
   Data Schedule For LV Electricity Meters And Current Transformers
   
5. 
   Selection of cables
   

Table 1:-Single Core PVC Insulated Non-Armoured, Standard Copper Conductors
Table 2 :-Multi Core Armoured PVC Insulated Copper Conductors Table-3 :-Multi Core Armoured XLE Insulated Copper Conductors

6. 
   Colour Identification Of Unarmoured, Armoured And Flexible Cable Cores And Bare Conductors
   
7. 
   Specifications Of MDBS/SMDBS(Format)
   
8. 
   Specification Of DBS (Format)
   
9. 
   Earth Continuity Conductors (ECCs and Equi-Potential Bonding Conductors.
   
10. 
    Earth Leakage Protection
    
11. 
    Spacing Of Support For Trunking, Conduiting and Cables
    
12. 
    Number Of Cables that may be installed in Trunking Conduits and Trays
    
13. 
    General conditions/ requirements for provision of attic slab above substation and LV electrical room.
    
14. 
    General dimensional details within buildings.
    
15. 
    General arrangements and details of substation equipment within buildings.
    
16. 
    Details of substation doors (A).
    
17. 
    Details of substation doors (B).
    
18. 
    Force ventilation for transformer room at basements.
    
19. 
    Cable laying arrangement in concrete trench (Section T-T)
    

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