CT Details for 33kV Switchgear
Substation Jabel Hafeet
Description
Cable Feeder CT No. Core CT Ratio VA Accuracy Vk RCT Ie
Main Protection ( Pilot Wire Diff Prot) T1 Core 1 600-400/1A - - X 375V @ 600A250V @ 400A2.4Ohms@ 600A 1.6Ohms @ 400A 50mA
For 3 Feeder ( SanyaGrid Stn) +3 Spares
Protection ( O/C+E/F) Core 2 600-1200/1A 15VA - 30VA 5P20Transducers+Bay Control Unit Core 3 600-1200/1A 15VA - 30VA 0.5FS5BusBar Protection Core 4 2000/1A 15VA 5P20
Transformer feeder ( 15MVA,33/11kV)
Transformer Differential Protection T1 Core 1 300-600/1A - - X 250V @ 300A250V @ 600A1.5Ohms@ 300A 3Ohms @ 600A 60mA
Protection ( O/C+E/F) Core 2 300-600/1A 15VA - 30VA 5P20Bay Control Unit Core 3 300-600/1A 15VA - 30VA 0.5FS5BusBar Protection Core 4 2000/1A 15VA 5P20
Bus SectionProtection ( O/C+E/F) Core 2 2000/1A 15VA 5P20Bay Control Unit T2 Core 1 2000/1A 15VA 0.5FS5BusBar Protection Core 1 2000/1A 15VA 5P20
CT DataJABEL HAHEET
Note - Details of pilot wire protection will be provided in line with remote end data on receipt from Client
4/11/2004 CT Calculationas for 33kV Switchgear.xls
CT Details for 33kV Switchgear
Substation Remlat Al Raee
Description
Cable Feeder CT No. Core CT Ratio VA Accuracy Vk RCT Ie
Main Protection ( Pilot Wire Diff Prot) T1 Core 1 For 2 Feeders ( AlDhama Grid Stn )Protection ( O/C+E/F) Core 2 600-1200/1A 15VA - 30VA 5P20Transducers+Bay Control Unit Core 3 600-1200/1A 15VA - 30VA 0.5FS5BusBar Protection Core 4 2000/1A 15VA 5P20
OHL feeder
Main Protection ( Distance Prot) T1 Core 1 600-1200/1A - - X 1068V @ 600A 990V @ 1200A 3Ohms @ 600A 6Ohms @1200A 60mA
Protection ( O/C+E/F) Core 2 600-1200/1A 15VA - 30VA 5P20Bay Control Unit Core 3 600-1200/1A 15VA - 30VA Cl-0.5BusBar Protection Core 4 2000/1A 15VA 5P20 SEF Protection ( Core Balance CT ) T1 Core 1 600-1200/1A 15VA - 30VA 5P20
Transformer feeder ( 15MVA,33/11kV)
Transformer Differential Protection T1 Core 1 300-600/1A - - X 250V @ 300A250V @ 600A1.5Ohms@ 300A 3Ohms @ 600A 60mA
Protection ( O/C+E/F) T2 Core 1 300-600/1A 15VA - 30VA 5P20Bay Control Unit Core 2 300-600/1A 15VA - 30VA 0.5FS5BusBar Protection T3 Core 1 2000/1A 15VA 5P20
Bus SectionProtection ( O/C+E/F) T2 Core 1 2000/1A 15VA 5P20Bay Control Unit Core 2 2000/1A 15VA 0.5FS5BusBar Protection T3 Core 1 2000/1A 15VA 5P20
CT Data
REMLAT AL RAEE
Later
Note - Details of pilot wire protection will be provided in line with remote end data on receipt from Client
4/11/2004 CT Calculationas for 33kV Switchgear.xls
CT Details for 33kV Switchgear
Substation Falaj Al Haza
Description
Cable Feeder CT No. Core CT Ratio VA Accuracy Vk RCT Ie
Main Protection ( Pilot Wire Diff Prot) T1 Core 1 600-300/1A - - X 300V for 300A 3Ohms for 300A 30mAFor 1 Feeder ( ZakherGrid Stn New Swgr) + 2Spares
Main Protection ( Pilot Wire Diff Prot) T1 Core 1For 2 Feeder ( ZakherGrid Stn Old Swgr) + 1Spares
Protection ( O/C+E/F) T2 Core 1 600-1200/1A 15VA - 30VA 5P20Transducers+Bay Control Unit Core 2 600-1200/1A 15VA - 30VA 0.5FS5BusBar Protection T3 Core 1 2000/1A 15VA 5P20
Transformer feeder ( 15MVA,33/11kV)
Transformer Differential Protection T1 Core 1 300-600/1A - - X 250V @ 300A250V @ 600A1.5Ohms@ 300A 3Ohms @ 600A 60mA
Protection ( O/C+E/F) T2 Core 1 300-600/1A 15VA - 30VA 5P20Bay Control Unit Core 2 300-600/1A 15VA - 30VA 0.5FS5BusBar Protection T3 Core 1 2000/1A 15VA 5P20
Bus SectionProtection ( O/C+E/F) T2 Core 1 2000/1A 15VA 5P20Bay Control Unit Core 2 2000/1A 15VA 0.5FS5BusBar Protection T3 Core 1 2000/1A 15VA 5P20
CT Data
FALAJ AL HAZA
Later
Note - Details of pilot wire protection will be provided in line with remote end data on receipt from Client
4/11/2004 CT Calculationas for 33kV Switchgear.xls
CT Details for 33kV Switchgear
Substation Al Ameria
Description
Cable Feeder CT No. Core CT Ratio VA Accuracy Vk RCT Ie
Main Protection ( Pilot Wire Diff Prot) T1 Core 1For 2 Feeders ( AlDhama Grid Stn) + 1Spare
Main Protection ( Pilot Wire Diff Prot) T1 Core 1For 2 Feeders ( PowerHouse Grid Stn) +1Spare
Protection ( O/C+E/F) T2 Core 1 600-1200/1A 15VA - 30VA 5P20Transducers+Bay Control Unit Core 2 600-1200/1A 15VA - 30VA 0.5FS5BusBar Protection T3 Core 1 2000/1A 15VA 5P20
Transformer feeder ( 15MVA,33/11kV)
Transformer Differential Protection T1 Core 1 300-600/1A - - X 250V @ 300A250V @ 600A1.5Ohms@ 300A 3Ohms @ 600A 60mA
Protection ( O/C+E/F) T2 Core 1 300-600/1A 15VA - 30VA 5P20Bay Control Unit Core 2 300-600/1A 15VA - 30VA 0.5FS5BusBar Protection T3 Core 1 2000/1A 15VA 5P20
Bus SectionProtection ( O/C+E/F) T2 Core 1 2000/1A 15VA 5P20Bay Control Unit Core 2 2000/1A 15VA 0.5FS5BusBar Protection T3 Core 1 2000/1A 15VA 5P20
Later
LaterAL AMERIA
CT Data
Note - Details of pilot wire protection will be provided in line with remote end data on receipt from Client
4/11/2004 CT Calculationas for 33kV Switchgear.xls
CT Details for 33kV Switchgear
Substation New City Centre
Description
Cable Feeder CT No. Core CT Ratio VA Accuracy Vk RCT Ie Remarks
Main Protection ( Pilot Wire Diff Prot) T1 Core 1 600-400/1A - - X 700V for 600A 470V for 400A3.8Ohms for 600A 2.5Ohms for 400A 50mA
For 2 Feeders ( CityCentre Grid Stn) &Spare Feeder
Main Protection ( Pilot Wire Diff Prot) T1 Core 1For 3 Feeders ( Power
House Grid Stn)Protection ( O/C+E/F) T2 Core 1 600-1200/1A 15VA - 30VA 5P20Transducers+Bay Control Unit Core 2 600-1200/1A 15VA - 30VA 0.5FS5BusBar Protection T3 Core 1 2000/1A 15VA 5P20
Transformer feeder ( 20MVA,33/11kV)
Transformer Differential Protection T1 Core 1 400-600/1A - - X 250V @ 400A250V @ 600A1.5Ohms@ 400A 3Ohms @ 600A 50mA
Protection ( O/C+E/F) T2 Core 1 400-600/1A 15VA - 30VA 5P20Bay Control Unit Core 2 400-600/1A 15VA - 30VA 0.5FS5BusBar Protection T3 Core 1 2000/1A 15VA 5P20
Bus SectionProtection ( O/C+E/F) T2 Core 1 2000/1A 15VA 5P20Bay Control Unit Core 2 2000/1A 15VA 0.5FS5BusBar Protection T3 Core 1 2000/1A 15VA 5P20
NEW CITY CENTRE
Later
CT Data
Note - Details of pilot wire protection will be provided in line with remote end data on receipt from Client
4/11/2004 CT Calculationas for 33kV Switchgear.xls
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