Power plant transformer protectionsFull description
Descripción: Power Transformer Testing Procedures
Power Transformer Protection
Descripción: test
a b
Data sheetDeskripsi lengkap
Short Circuit Calculation with MVA Method and compare with ETAP 7.00
Descripción: k
Appendix 4- Technical Particulars - To be filled in by bidder 12.5/16MVA 33/6.9kV POWER TRANSFORMER PETROLEUM DEVELOPMENT DEVELOPMENT OMAN L.L.C (OMAN) MABROUK DEEP PHASE-3 MBR-21-102396-EA-7303-00072-0000-3G
TYPE OF EQUIPMENT CLIENT UNIT or AREA: REQ.NO:
Information Marked with ■ to be completed by the Vendor/Manufacturer. Sl. No. 1 .0 .00
Description
Requirement
Tag No.
1.2
Quantity
1.3 1.3
Refere Reference nce Desig Design n Stand Standard ard
G21101-TX & G21102-TX 2 N os IEC IEC 60076 60076
1.4
Make
■
1.5 1.5
Tran Transf sform ormer er Model Model No. / Type Type No.
■
1.6
Serv ice
1.7
Design Life (Years)
1.8
No. of Windings
Two
1.9
Type of cooling
ONAN / ONAF
1.10
Ta Tap Changer
1.11
3 Ph. Symm. Fault lev el at HV side
1.12
Short time withstand capability
1.13 1.13
Tran Transf sform ormer er oper operat atio ion n
2.2
2.3
2.4
2 .5 .5 2.6
D ES ESIGN D AT AT A Design Temperature Continuous Maximum Rating (CMR) of transformer at 55°C Natural Cooling Rating (MVA) Forced cooling Rating (MVA) Supply Voltage System Frequency (Hz) with Variation Rated no load Voltage ratio Current No Load Current Rated Current Primary side/Secondary side @ ONAN Rated Current Primary side/Secondary side @ ONAF % Im pe pe da da nc nc e Winding connection
25kA 2 sec as per IEC Independent and momentary Parallel operation with other Transformer 55°C
Insulation Class Temperature rise based o n Ambient Temperature conditions W inding Oil Basic Impulse Withstand Voltage HV W inding (kV Peak) HV Neutral (kV Peak)
Dyn11 NA Resistance earthed with current limited to 100A Class-A
■ ■ 170 Not Applicable
LV W inding (kV Peak)
75
LV Neutral (kV Peak) Separate Source Power Frequency withstand Voltage
75
HV W inding (kV rms)
70
HV Neutral (kV rms)
-
LV W inding (kV rms) LV Neutral (kV rms)
28 28
3.0
CO ON NST RU RU CT CT IO ION
3.1
W inding Material for HV and LV
Copper
Winding Insulation 3.2
HV side
Uniform
3.3 3.4
LV side Co Core Material & Grade Type of Tank construction
Uniform CRGO W elded
3.5
Tank Cov er
Bolted
Page 1 of 5
Appendix 4- Technical Particulars - To be filled in by bidder 12.5/16MVA 33/6.9kV POWER TRANSFORMER PETROLEUM DEVELOPMENT OMAN L.L.C (OMAN) MABROUK DEEP PHASE-3 MBR-21-102396-EA-7303-00072-0000-3G
TYPE OF EQUIPMENT CLIENT UNIT or AREA: REQ.NO:
Information Marked with ■ to be completed by the Vendor/Manufacturer. Sl. No.
Description
Requirement
Bidder's Proposal
Remarks
Min. thickness of tank ste el (mm) 3.4
3.5 3.6 3.7 3.8 3.9 3.10 3.11
3.12
3.13 3.14 3.15 4 4.1
4.2
Top
■ mm
Bottom
■ mm
Sides Min. thickness of radiator plates (mm) Maximum pressure withstand of tank & radiator (kPa) Minimum Vacuum Withstand (kPa) Oil Conservation system (Conservator / Sealed type) Air bag for Transformer Radiator Type (Detachable / Welded)
■ mm ■ mm
Type of enclosure for marshalling box, cooling control cabinet etc. Vacuum withstand capability
■ ■ Conservator Type Required Detachable ■
Main tank
■
Radiators
■
Minimum clearance height for lifting core and winding from tank Free space required at the top for removal of accessories including bushing. Paint Shade
■ ■ RAL 7035
Performance data Rated Design Flux density at Rated Voltage (Tesla) Core Yoke
■ ■
Flux Density at 110% rated voltage (Tesla)
■
Maximum Current density at CMR 4.3
4.4
4.5
HV Winding
A/mm
2
LV winding Hot spot Temperature at CMR as per site service condition ONAN ONAF
A/mm
2
Design X/R Ratio Impedance Voltage & reference base @ ref. o
4.6
temperature 75 C At principal tap
4.7 4.8
At Extreme plus tap At Extreme minus tap LV winding Zero sequence impedance and reactance
4.9
■ ■ ■ Resistance/Reactance/Impe dance ■ ■ ■ ■ ■
Saturation Voltage of core material (%Un) Maximum symmetrical short circuit current for which the windings are designed to withstand thermally for 2s HV Winding (kA)
■
■
4.12
LV Winding (kA) Maximum Temperature Rise (Guaranteed) At Full Load Top oil by Thermometer (i) For ONAN type cooling (ii) For ONAF type cooling Windings by resistance method (i) For ONAN type cooling (ii) For ONAF type cooling Estimated maximum cooler losses at full load.
■ ■ ■
4.13
Guaranteed Losses at 75°C without positive tolerance No Load Loss (kW) Load Loss @ 75°C (kW)
■ ■
4.10
4.11
4.14
■
■ ■
Capitalization cost of No Load Losses
■
Capitalization cost of Load Losses
■
Magnetisation current at rated voltage and frequency, percent of full load current
■
Page 2 of 5
Appendix 4- Technical Particulars - To be filled in by bidder 12.5/16MVA 33/6.9kV POWER TRANSFORMER PETROLEUM DEVELOPMENT OMAN L.L.C (OMAN) MABROUK DEEP PHASE-3 MBR-21-102396-EA-7303-00072-0000-3G
TYPE OF EQUIPMENT CLIENT UNIT or AREA: REQ.NO:
Information Marked with ■ to be completed by the Vendor/Manufacturer. Sl. No.
Description
Requirement
Bidder's Proposal
Remarks
Efficiency @ 75°C (UPF/0.8PF) 4.15
At Full Load
■
At 75% Load
■
At 50% Load
■
Regulation @ 75°C (UPF/0.8 PF) 4.16
At Full Load
■
At 75% Load
■
At 50% Load
■
4.17
% loading at which max. efficency
■
4.18
Noise Level at full rated power (db)
■
5 .0 5.1
T ER MIN AT IO NS HIGH VOLTAGE TERMINATION
5.1.1
Type of Termination
5.1.2 5.1.3
Cable Type Cable Size & Material (1C x Sq.mm.)
5.1.4
N o. of Runs / phase
5.1.5
Cable Take-off method
Vertically down
5.1.6
Separate Cable box for Neutral
Not Applicable
5.1.7
Ingress Protection - Cable Box
min IP 55
5.2
Air insulated cable box Cu/XLPE/AWA/PVC 1C x 240 Sq. mm/Ph 1
HIGH VOLTAGE PHASE BUSHINGS
5.2.1
Manufacturer
5.2.2
Type Designation
■
5.2.3
Material
■
5.2.4
Location
■
5.2.5
Rated Voltage (kV)
■
5.2.6
Rated current (A)
■
5.2.7
BIL (kVpeak)
■
5.2.8
Power Frequency withstand voltage (kVrms)
5.2.9
Creepage distance (mm)
5.2.10 Cantilever strength (kN)
■
■ 25 mm/kV ■
5.2.11 Minimum Air Clearances
5.3
Live Metal - Metal of different phases (mm)
■
Live Metal - Earth (mm)
■
LOW VOLTAGE TERMINATION
5.3.1
Type of Termination
5.3.2
Cable Type
5.3.3
Cable Size & Material (1C x Sq.mm.)
5.3.4
No. of Runs / phase
5.3.5
Cable Take-off method
5.3.6
Separate Cable box/enclosure for Earth
5.3.7
Ingress Protection - Cable Box
5.4
Air insulated cable box separate for line and neutral Cu/XLPE/AWA/PVC 1C x 630 4 Runs/Ph + 1Runs Neutral Vertically down Yes min IP 55
LOW VOLTAGE PHASE BUSHINGS
5.4.1
Manufacturer
■
5.4.2
Type Designation
■
5.4.3
Material
■
5.4.4
Location
■
5.4.5
Rated Voltage (kV)
■
5.4.6
Rated current (A)
■
5.4.7
BIL (kVpeak)
■
5.4.8
Power Frequency withstand voltage (kVrms)
5.4.9
Creepage distance (mm)
■ 25mm/kV
5.4.10 Cantilever strength (kN)
■
Minimum Air Clearances
■
5.4.11 Live Metal - Metal of different phases (mm) Live Metal - Earth (mm)
■ ■
Page 3 of 5
Appendix 4- Technical Particulars - To be filled in by bidder 12.5/16MVA 33/6.9kV POWER TRANSFORMER PETROLEUM DEVELOPMENT OMAN L.L.C (OMAN) MABROUK DEEP PHASE-3 MBR-21-102396-EA-7303-00072-0000-3G
TYPE OF EQUIPMENT CLIENT UNIT or AREA: REQ.NO:
Information Marked with ■ to be completed by the Vendor/Manufacturer. Sl. No. 5.5
Description
Requirement
LOW VOLTAGE NEUTRAL BUSHING Manufacturer
5.5.2
Type Designation
■
5.5.3
Material
■
5.5.4
Location
■
5.5.5
Rated Voltage (kV)
■
5.5.6
Rated current (A)
■
5.5.7
BIL (kVpeak)
■
5.5.8
Power Frequency withstand voltage (kVrms)
5.5.9
Creepage distance (mm)
■
■ 25 mm/kV
5.5.10 Minimum Air Clearances (Live Metal-Earth (mm)
■
5.5.11 Cantilever strength (kN)
■
LV NEUTRAL CURRENT TRANSFORMERS
5.6.1
Location
5.6.2
No. of cores
5 .6 .3
C or e Purpose Ratio (A/A)
LV Neutral 2 C or e 1 Standby E/F protection 100/1
Class
5P
Rated Accuracy Limit Factor (ALF)
20
Rated secondary winding resistance (Rct - Ohm)
■
Rated Secondary burden (VA) 5 .6 .4
C or e Purpose Ratio (A/A)
15 C or e 2 Standby E/F protection 100/1
Class
5P
Rated Accuracy Limit Factor (ALF)
20
Rated secondary winding resistance (Rct - Ohm)
■
Rated Secondary burden (VA)
15
6.0
T AP CH AN GER
6.1
Type
6.2
Tapping on winding
OCTC High Voltage
6.3
Manufacturer
■
6.4
Type Designation
■
6.5
No. of steps
5
6.6
Step Voltage (%)
6.7
Tapping range (%) Type of enclosure for marshalling box, cooling control cabinet etc. WINDING TEMPERATURE INDICATOR
6.8 7
Remarks Separate enclosure
5.5.1
5.6
Bidder's Proposal
2.50% +5% to -5%
7.1
Ma nufac tu re r
7.2
Type Designation
■
7.3
Adjustment range for 2 stage Alarm contacts
■
7.4
Adjustment range for forced cooling contacts
■
7.5
Contact Rating (at 240V AC)
■
7.6
N o. of contacts
■
8.00
OIL TEMPERATURE INDICATOR
8.10
Manufacturer
8.20
Type Designation
■
8.30
Adjustment range for 2 stage Alarm contact
■
8.40
Adjustment range for forced cooling contacts
■
8.50
Contact Rating (at 240V AC)
■
8.60
No. of contacts
■
9.00
BUCHHOLZ RELAY
9.10
Manufacturer
9.20
Type Designation
■
9.30
Contact Rating (at 240V AC)
■
9.40
No. of contacts
■
Page 4 of 5
Appendix 4- Technical Particulars - To be filled in by bidder 12.5/16MVA 33/6.9kV POWER TRANSFORMER PETROLEUM DEVELOPMENT OMAN L.L.C (OMAN) MABROUK DEEP PHASE-3 MBR-21-102396-EA-7303-00072-0000-3G
TYPE OF EQUIPMENT CLIENT UNIT or AREA: REQ.NO:
Information Marked with ■ to be completed by the Vendor/Manufacturer. Sl. No. 10
Description
Requirement
PRD FOR MAIN TANK
10.10
Manufacturer
■
10.20
■ ■
10.40
Type Designation Pressure range for operation (From____ to ____ kPa) Resealing pressure (kPa)
10.50
Contact Rating (at 240V AC)
■
10.60
No. of contacts
■
11
Remarks
PRESSURE RELEIF DEVICE (PRD)
10.1
10.30
Bidder's Proposal
■
C OO LIN G E QU IPME NT
11.1
Manufacturer
■
11.2
No. of cooling fans
■
11.3
No. of cooling fan groups
■
11.4
Power Rating of each fan (kW)
■
11.5
Supply Voltage
■
11.6
No. of phases
■
11.7
Min number of fans to be in operation at full load.
■
11.8
Winding temperature at which forced cooling is initiated.
■
One Standby Fan per 50% cooler bank
Transformer derating factor after failure of 11.9
(i) One cooling fan
■
(ii) Two cooling fans
■
11.10 11.11 12.0
(iii) All cooling fans Total fan consumption at full load (kW) Overload capacity of transformer OIL LEVEL INDICATOR FOR MAIN TANK
■ ■ ■
12.1
Manufacturer
■
12.2
Type Designation
■
12.3
Contact Rating (at 110V DC)
■
13
OIL LEVEL INDICATOR FOR CONSERVATOR
13.1
Manufacturer
13.2
Type Designation
■
13.3
Quantity
■
13.4
Contact Rating (at 110V DC)
■
14
■
BREATHER
14.1
Breather type for main tank
15.0
VALVES
15.1
Type & Size of Oil Drain valve
■
15.2
Type & Size of Oil Filtration valve
■
15.3
Type & Size of Radiator valve
■
15.4
Type & Size of sampling valve
■
17
■
T RAN SFO RMER O IL
17.1
Manufacturer
17.2
Make Designation
17.3
Applicable Industry Standards
IEC 60296
17.4
Class of Oil
Inhibited oil
18 18.1 19 19.1 19.2
■ ■
SPECIAL TEST / TYPE TESTS Temperature rise test
Required
W EIG HT & D IME NSIO NS Overall dimension Transformers (L x B x H) Maximum Shipping Dimension of Transformer (L x B x H) - mm
