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