technical schedules
TRANSCRIPT
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5.8 MGD Seawater Desalination Project
Tender Enquiry Document for 110 kV Switchyard
FICHTNER India Doc. No.6104-EL-SPC-610-001P2Sec B3-Swyd
Rev. : R0 Page : B3 : 1
SSEECCTTIIOONNBB33
Technical Schedules
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Tender Enquiry Document for 110 kV Switchyard
FICHTNER India Doc. No.6104-EL-SPC-610-001P2Sec B3-Swyd
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Table of Contents
1.0 SWITCHYARD TECHNICAL DETAILS ............................................................................... 3
2.0 EHV CIRCUIT BREAKERS .................................................................................................... 4
3.0 EHV ISOLATORS WITH EARTH SWITCH.......................................................................... 7
4.0 EHV CURRENT TRANSFORMERS....................................................................................... 9
5.0 EHV VOLTAGE TRANSFORMERS .................................................................................... 10
6.0 LIGHTNING ARRESTERS.................................................................................................... 12
7.0 EHV SWITCHYARD CONTROL PANEL............................................................................ 13
8.0 MISCELLANEOUS ITEMS................................................................................................... 16
9.0 CABLES.................................................................................................................................. 19
10.0 ILLUMINATION SYSTEM ................................................................................................... 21
11.0 GENERAL ELECTRICAL ITEMS ........................................................................................ 22
12.0 EARTHING LIGHTNING PROTECTION ............................................................................ 22
13.0 TARIFF METERING PANEL (MAIN & CHECK) ............................................................... 23
14.0 BATTERY.............................................................................................................................. 24
15.0 BATTERY CHARGER........................................................................................................... 26
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Tender Enquiry Document for 110 kV Switchyard
FICHTNER India Doc. No.6104-EL-SPC-610-001P2Sec B3-Swyd
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SECTION B3
TECHNICAL SCHEDULES
Bidder shall furnish the following technical particulars for the equipment offered by him.
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Sl. No. Description Unit Particulars/
Data
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1.0 SWITCHYARD TECHNICAL DETAILS
1.1 Rated voltage kV
1.2 1.2 / 50 micro sec impulse withstand voltage kV peak
1.3 One min. power frequency withstand voltage kV
1.4 Current ratings
a. Continuous for main bus Amps
b. Continuous for bay buses Amps
1.5 Minimum air clearance
a. Phase to phase mm
b. Phase to ground mm
c. Live point to ground mm
d. Section clearance mm
1.6 Bay width m
1.7 Phase to phase spacing m
1.8 Size of the switchyard m x m
1.9 Design tensions
a. Main bus kg
b. Bay bus kg
c. End towers (for connections to line) kg
1.10 Total creepage distance for all equipment mm
1.11 Protected creepage distance mm
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Tender Enquiry Document for 110 kV Switchyard
FICHTNER India Doc. No.6104-EL-SPC-610-001P2Sec B3-Swyd
Rev. : R0 Page : B3 : 4
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Sl. No. Description Unit Particulars /
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1.12 Factor of safety adopted for the structural design
a. Normal condition
b. Short circuit condition
c. Seismic condition
1.13 Visual discharge voltage for all equipment with kV
fitting & insulator assemblies for falling power
frequency voltage
1.14 Radio interference voltage for all the switchyardequipment with fittings & insulator assemblies
RIV level micro volts
1.15 Type of design for main & bay buses
a. Strung bus or tubular bus
b. Material
2.0 EHV CIRCUIT BREAKERS
2.1 Make, type, country of manufacture
2.2 Applicable standard
2.3 Rated voltage kV
2.4 Type of circuit breaker
2.5 Reference ambient temperature C
2.6 Rated continuous current Amp
2.7 a. Rated short circuit breaking current
and rated making current kA
b. Short circuit withstand current kA / sec
rating & duration
2.8 Temperature rise of contacts over an
ambient of 50C while carrying rated current C
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FICHTNER India Doc. No.6104-EL-SPC-610-001P2Sec B3-Swyd
Rev. : R0 Page : B3 : 5
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Sl. No. Description Unit Particulars /
Data
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2.9 Rated operating duty
2.10 Total break time m.sec
2.11 Total make time m.sec
2.12 Rated transient recovery voltage for
short line faults kV
2.13 No. of breaks in series
2.14 Insulation level
a. One minute P.F withstand voltage kV peak
b. Impulse withstand voltage kV peak
c. Switching surge withstand voltage kV peak
2.15 Minimum clearance in air
a. Between live parts mm
b. Between live parts & earth mm
c. Centre to centre distance between phases mm
2.16 Trip free Yes / No
2.17 Type of operating mechanism
2.18 Normal method of tripping
2.19 Emergency method of tripping
2.20 No. of trip coils
2.21 Rated voltage and permissible variations:
a. for Trip coils
b. for Closing coils
c. for Operating mechanism motor
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Sl. No. Description Unit Particulars /
Data
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2.22 Burden (watts)
a. Trip coils
b. Closing coils
2.23 Rated line charging current
2.24 Rated cable charging current
2.25 Maximum over voltage when switching off
a. Unloaded transformer
b. Unloaded lines
c. Cable charging
d. Capacitor banks
2.26 When switching off asynchronous system
a. Maximum current kA
b. Maximum recovery voltage between contacts
2.27 No. of operation circuit breakers can perform
without inspection, replacement of contacts
a. At rated breaking current
b. At rated continuous current
2.28 Creepage distance for the interrupter insulator mm
2.29 Type and creepage distance for the support insulator mm
2.30 Cantilever strength of circuit breaker at the
terminal pad kg
2.31 Whether pressure switches for Sulphur hexafluoride
pressure low alarm, trip, lockout closing, lockout
opening are provided.
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Sl. No. Description Unit Particulars /
Data
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2.32 Leakage rate of Sulphur hexafluoride per year. % / year
3.0 EHV ISOLATORS WITH EARTH SWITCH
3.1 Make, type, and country
of manufacture
3.2 Reference standard
3.3 Rated voltage & frequency Volts, Hz
3.4 Rated current A
3.5 Reference ambient temperature C
3.6 Short time withstand current &
duration kA Sec
3.7 a. Dynamic withstand current kA peak
b. Max. current isolator can safely interrupt A
c. Transformer magnetising current breaking A
d. Making current (for earth switch only) A
3.8 Maximum temperature rise of current
carrying parts
3.9 Insulation test values
a. One minute power frequency wet
withstand voltage
i. Between poles & earth kVii. Across isolating distance kV
b. Impulse withstand voltage
i. Between poles & earth kV peak
ii. Across isolating distance kV peak
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Sl. No. Description Unit Particulars /
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3.10 Material
a. Main contact
b. Arcing contact
c. Current carrying parts
3.11 Whether contacts are silver faced
3.12 Clearance
a. Between poles mm
b. Between live parts earth mm
c. Between live parts when switch is open mm
i. Between same pole mm
ii. Between adjacent pole mm
3.13 Phase spacing
3.14 Type of interlock
a. External
b. Earth switch
3.15 Insulators
a. Type of insulator (solid core)
b. Cantilever strength
c. Total creepage distance
d. Applicable standards
3.16 Operating mechanism (motor / manual)
a. Main blade
b. Earth blade
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Sl. No. Description Unit Particulars /
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4.0 EHV CURRENT TRANSFORMERS
4.1 Make & country of manufacture
4.2 Applicable standards
4.3 Rated voltage class
4.4 Insulation withstand level :
a. Impulse withstand voltage kV peak1.2 / 50 micro sec wave
b. One minute power frequency kV rms
withstand voltage
4.5 Number of cores per CT
4.6 Whether it is possible to adjust tap Yes / No
setting of any core independent of
other cores
4.7 Relaying cores
a. Accuracy class (for 5P20)
b. Rated burden (for 5P20) VA
c. Accuracy limit factor (5P20)
d. Minimum knee point voltage Volts
VK for PS class
e. Maximum excitation current mA
at VK, VK/2 volts (PS class)f. Maximum secondary resistance (PS class) Ohms
4.8 For metering cores:
a. Accuracy class
b. Rated burden VA
c. Rated power factor
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d. Instrument security factor
4.9 Short time thermal current rating
a. Current kA
b. Rated time sec
4.10 Dynamic current rating kA peak
4.11 Maximum temperature rise of
winding at rated primary current and
rated burden, when referred to specifiedambient temperature C
4.12 Class of insulation of winding
4.13 Cantilever strength at terminal kg
4.14 Type and creepage distance of insulator housing m
5.0 EHV VOLTAGE TRANSFORMERS
CVT EMVT
-------------- ------------
5.1 Manufacturer & country of manufacture
5.2 Applicable standards
5.3 Type of VT
5.4 Insulation withstand level
a. Impulse withstand voltage kV peak
1.20/50 micro sec. wave
b. One minute power frequency kV rms
withstand voltage
5.5 Number of secondary windings for each VT
5.6 Rated primary voltage kV
5.7 Rated secondary voltage V
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CVT EMVT
-------------- ------------
5.8 Rated VA burden for each
each secondary winding VA
5.9 Rated power factor
5.10 Accuracy class for each secondary winding
a. Winding 1
b. Winding 2
5.11 Method of connection
a. Primary winding
b. Each secondary winding
i. Winding 1
ii. Winding 2
5.12 Rated voltage factor
5.13 Maximum temperature rise of winding C
at 110% excitation and rated burden when
referred to specified ambient temperature
5.14 Class of insulation of windings
5.15 Capacitor data
a. High voltage capacitance PF
b. Intermediate voltage capacitance PF
c. Nominal intermediate voltage kV
d. Equivalent capacitance for carrier coupling PF
e. Maximum permissible impedance at power
frequency of carrier coupling device Ohms
5.16 Insulator type and total creepage distance mm
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CVT EMVT
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5.17 Radio interference voltage Volts
5.18 Details of high speed switch(es) on secondary
winding (alternative to fuses)
a. Make, type, coil rating other technical details A
5.19 Cantilever strength kg
6.0 LIGHTNING ARRESTERS
6.1 Make, type & country of
manufacture
6.2 Arrester type
6.3 Applicable standards
6.4 Arrester class
6.5 Rated arrester voltage kV
6.6 Rated frequency Hz
6.7 Nominal discharge current
(8/20 micro sec wave) kA
6.8 Minimum discharge capability KJ / kV
6.9 Residual voltage corresponding to kV peak
a. Steep current impulseb. Lightning impulse
6.10 Reference current (IEC TC37-WG-4 1985) A
6.11 Reference current (IEC TC37-WG-4 1985) kV rms
6.12 Over voltage withstand capability for
a. 10 cycles kV rms
b. 1 second kV rms
c. Continuous kV rms
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Sl. No. Description Unit Particulars /
Data
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6.13 Energy discharge capacity KJ / kV
6.14 Maximum residual voltage at nominal
discharge current kV rms
6.15 Discharge voltage at 5 kA kV peak
discharge current
6.16 Discharge voltage at 10 kA
discharge current kV peak
6.17 Discharge voltage at 20 kAdischarge current kV peak
6.18 Impulse current withstand
a. High current short duration
(4 / 10 micro second wave) kA peak
b. Low current long duration A peak
c. Virtual duration of rectangular wave micro-second
6.19 One minute power frequency (dry) kV rmswithstand voltage of arrester housing
6.20 Impulse withstand test voltage of
arrester housing with 1.2/50 micro-second wave kV peak
6.21 Total creepage distance of whole arrester housing mm
6.22 Cantilever strength of complete arrester kg
6.23 Pressure relief class (as per IEC 99)
7.0 EHV SWITCHYARD CONTROL PANEL
7.1 Make
7.2 a. Degree of protection for
enclosure of panel
b. Sheet steel thickness mm
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Sl. No. Description Unit Particulars /
Data
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7.3 Applicable standards
7.4 Indicating meters
a. Meter size
b. Accuracy
c. Type
7.5 KWH METER
a. Accuracy
b. Whether pulse transmitting facility provided Yes / No
7.6 TRI VECTOR METER
a. Make
b. Type
7.7 TRANSDUCERS
a. Accuracyb. Output current mA DC
c. No. of channels
d. Type no. & make
7.8. Describe annunciators scheme,
features, sequence and size as
offered (please attach write-up) Yes/No
7.9 Mimic material and width mm
7.10 Indication lamps
a. Make
b. Type
c. Rating, voltage / watts V/W
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Sl. No. Description Unit Particulars /
Data
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7.11. Push buttons
a. Make
b. Number included
c. No. of NO + NC contacts
d. Function
7.12. Semaphore indicator
a. Make
b. Rating Watts
c. No. of coils No.
d. Size offered
i. for CB
ii. for isolator main & earth switch
e. nos. offered
7.13. Control Switch. / Selector Switch.
a. Make
b. Rating (DC inductive breaking capacity) V/ Amps
7.14. Hooter / Bell
a. Make
7.15. EHV Switchyard Relay Panel
a. Panel make and country of manufacture
b. - Degree of protection for
enclosure of panel
- Sheet steel thickness mm
c. Mounting of relays
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Sl. No. Description Unit Particulars/
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d. Relay Particulars
(furnish following data
as applicable for all the relays offered.
Attach necessary sheets as required)
- Control voltage V
- Current rating A
- Voltage rating V
- Operating temperature range C
- Applicable standards
- Aux. supply operating range
- Online automatic testing facility provided
- Online manual testing facility provided
e. Relay types offered (list each relay and
furnish the data for each relay used)
f. All the relays offered are type tested Yes/No
8.0 MISCELLANEOUS ITEMS
8.1 ACDB / DCDB (fill in separately for ACDB & DCDB)
a. Make
b. Type (Draw-out / non drawout)
c. Sheet steel thickness mmd. Degree of protection
e. Busbar details
- Material
- Rated voltage
- No. of phases
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- Current rating
- Fault level withstand
f. No. of switch fuse feeders x
ratings :
1 x incomer x .A
X outgoing x .A
8.2 Insulator and hardware (fill in forbus post insulator as well as
insulator string)
a. Insulator / Insulator string
- Manufacture & country of manufacture
- Applicable standard
- Type of insulator (antifog / normal)
- Insulating material
- No. of units per string
- Creepage distance
i. Disc unit mm
ii. String assembly mm
- One minute power frequency
withstand (dry)
i. Single disc kV
ii. String assembly / buspost kV
- One minute power frequency
(wet) withstand
i. Disc unit kV
ii. String assembly / buspost kV
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Sl. No. Description Unit Particulars/
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- Impulse withstand voltage (dry)
i. Disc unit kV peak
ii. String assembly / buspost kV peak
- impulse withstand voltage (wet) kV peak
i. Disc unit kV peak
ii. String assembly / buspost kV peak
- Electro mechanical strength of
each disc kg
- Live parts to earth clearance
(sparkover distance) mm
- Cantilever strength (for bus post
insulator only) kg
- Tensile strength (for bus post
insulator only) kg
- Visual discharge voltage for falling
power frequency voltage (string and
bus post insulators) kV
- Compression strength (for bus post
insulator only) kg
- Radio interference voltage for string
and bus post insulator
i. Test voltage kV
ii. Radio interference voltage micro volt
8.3 INSULATOR HARDWARE
a. Manufacture
b. Applicable standard
c. All ferrous parts are hot dip galvanised Yes/No
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8.4 BUS CONDUCTORS, CLAMPS AND CONNECTORS
a. Flexible conductor ACSR
- Size of conductor for main bus &
bus coupler bay buses
- Size of conductor for other bay buses
- The temperature rise of the conductor
while carrying the rated current
- Purity of aluminium / copper %
8.5 Clamps and Connectors
a. Whether material specification of the Yes/ No
clamping and connectors are
as per specification
b. Temperature rise of the clamp while
carrying the rated current C
c. Minimum thickness at any part of the clamps mm
d. Coronal extinction voltage for
falling power frequency voltage V
9.0 CABLES
9.1 Make
9.2 Type
9.3 Applicable standard
9.4 Voltage grade
9.5 Maximum conductor temperature
a. Continuous C
b. Short time C
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9.6 Conductor
a. Material
b. Size sq.mm
c. No. & diameter of wire in
each conductor No. / mm
9.7 Insulation
a. Material
b. Type
c. Thickness mm
9.8 Inner sheath
a. Material
b. Type
c. Thickness mmd. Extruded?
e. Approx. outside dia over sheath mm
9.9 Armouring
a. Material
b. Size
c. D.C resistance at 20 ohm / km
9.10 Outer sheath
a. Material
b. Type
c. Thickness
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9.11 Approx. overall diameter mm
9.12 Standard drum length with tolerance mm
9.13 Net weight of cables kg / km
10.0 ILLUMINATION SYSTEM
10.1 Lighting Fixtures
a. For outdoor switchyard
i. Type
ii. Make
iii. Quantity x Watts
iv. Designed lux level
b. For switchyard control room
i. Type
ii. Make
iii. Quantity & wattsiv. Designed lux level
c. For Battery room
i. Type
ii. Make
iii. Quantity & watts
iv. Designed lux. level
10.2 Lighting Panel
a. Make
b. No. of ways / circuits
c. Incoming TPN MCB with ELCB rating / make
d. Outgoing SP MCBs.
i. Number
ii. Rating
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10.3 WIRING
a. Main cables type / size
b. Cables to fixtures type / size
c. Method of cabling conduit / size
11.0 GENERAL ELECTRICAL ITEMS
11.1 Cable Trays
a. Makeb. Type
c. Width
11.2 Cable ties, clamps,
identification tags, etc. provided?
11.3 Rigid metal conduits, RCC hume pipes
offered for Trench / rail crossing / in
equipment foundations?
11.4 Fence height / material details
11.5 Granite metal work
a. Size of metal
b. Depth of spreading
11.6 All other standard items like hand
gloves, shock treatment charts, rubber
mats caution boards etc. furnished? Yes/No
12.0 EARTHING LIGHTNING PROTECTION
12.1 Earthing
a. Main grid conductor
i. Material
ii. Cross section
b. Equipment connections
i. Material
ii. Cross section
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13.0 TARIFF METERING PANEL (MAIN & CHECK)
13.1 Make of tri-vector meter
13.2 Rated voltage & frequency (110V / 50 Hz) V / Hz
13.3 Rated current (1 amp) Amp
13.4 Type (Digital type)
13.5 Accuracy class (0.2)
13.6 Burden at rated voltage VA
13.7 Is the Tri-vector meter bi-directional type
13.8 Is the Tri-vector meter suitable for 2 part tariff
13.9 Auxiliary power supply requirement (110V DC 10%) V DC
13.10 Does the tri-vector meter have maximum demand indicatoras called for in the specification
i) Does the tri-vector meter have
ii) A serial port suitable for Ethernet protocol
iii) A telemetry port for future communication through
telephone lines
13.11 Construction of panel :
i) Panel sheet steel thickness mm5
ii) Cable entry
iii) Access to the panel
iv) Ingress protection class
v) Panel space heater (hygrostatically controlled)
vi) Panel illumination & small power socket
vii) Size of panel wiring mm
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14.0 BATTERY
14.1 Battery
14.2 Manufacturer
14.3 Type of battery
14.4 No. of batteries
14.5 Number of cells
14.6 Voltage rating
- Nominal cell voltage rating
- Nominal float charging voltage
- Nominal boost charging voltage
- Nominal cell discharge voltage
14.7 10 hour rating at 27C to 1.85 V / cell
14.8 One (1) minute rating to 1.85 V cell
14.9 Rated capacity at maximum ambient
temperature (50C) AH
14.10 Rated capacity at minimum ambient
temperature (8.5C) AH
14.11 Continuous load and duration
14.12 a. Type of plates
- Positive
- Negative
b. Type and material of container
14.13 Type of rack
14.14 Number of racks / battery
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14.15 Number of cells / rack
14.16 Type of rack rows / tiers
14.17 Inter row, inter tier connectors
and end take off furnished? Yes/ No
14.18 Connection hardware with 5%
extra furnished? Yes/ No
14.19 Cable termination at positivenegative and intermediate tap
provided?
14.20 Recommended specific gravity of
electrolyte at the end of full charge Yes/ No
and at first filling
14.21 Type of separator
Material and thickness of separator
14.22 Float charging current
14.23 Boost charging current
(initial & final)
14.24 Internal resistance of one cell
14.25 Short circuit current for dead short
Across battery terminals at
14.25.1 Float charge voltage (in kA)
14.25.2 Boost charge voltage (in kA)
14.25.3 Equalising charge voltage
14.25.4 Only due to battery (in kA)
14.26 Cell voltage characteristics during
charging furnished? Yes/No
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14.27 Charging current of a fully
discharged battery at 12 hours
charging rate
14.28 Charging efficiency of the battery
14.29 Overall dimension of
14.29.1 Each cell (L x B x H)
14.29.2 Battery(L x B x H)
14.29.3 Battery layout furnished Yes/ No
14.30 Approximate weight (kgs)
1430.1 Each cell
14.30.2 Complete battery
14.31 List of accessories
14.32 Spare parts as specified
provided with equipment
14.33 Ventilation requirements
15.0 BATTERY CHARGER
Float cum
Boost Charger
15.1 Manufacturer type and ref.
standard
15.2 Input voltage with % variation
15.3 Input frequency with % variation
15.4 Output DC voltage
15.5 Output current
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15.6 Time required to fully charge the
completely discharged battery under
boost charging
Float cum
Boost Charger
15.7 Maximum AC input during boost charging
15.8 Ripple in DC output
15.9 Charger efficiency at rated output
15.10 Temperature rise above ambient of 50C
15.11 Regulation for 0-100% rated load
with 10% voltage variation and
- 5% to + 5% frequency variation
15.12 Power factor at rated load
15.13 Charger provided with
a. Automatic voltage Yes/No
b. Current limiting circuitry and constant current regulator Yes/No
c. Smoothing filter circuit Yes/No
d. Soft start feature Yes/No
15.14 SCR elements provided with
a. Surge protection
b. Fast acting semi conductor fuses
15.15 AC Switch
a. Make
b. Type
c. Rating
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15.16 AC Contactor
a. Make
b. Type
c. Rating
d. Coil rating
Float cum
Boost Charger
15.17 AC / DC fuse
a. Make
b. Type
15.18 Rectifier transformer
a. Make
b. Type
c. Rating
d. Insulation classe. Voltage ratio
15.19 Blocking diodes
a. Make
b. Type
c. Current rating for 1 minute / 1 hour
d. Peak inverse voltage continuous / surge
15.20 SCR
a. Make
b. Type
c. RMS current rating
d. Peak inverse voltage continuous / surge
e. Max. temp rise above an ambient of 50C
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15.21 DC Contactor
a. Make
b. Type
c. Rating
15.22 Indicating lamps
a. Make
b. Wattagec. Rating
15.23 Push Button
a. Make
b. Type
c. Rating
d. No. of contacts
15.24 Meters
a. Make
b. Type
c. Accuracy
d. Size
15.25 Control terminals
a. Make
b. Type
c. Rating
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15.26 Annunciator
a. Make
b. Type
c. No. of windows
15.27 DC Switch
a. Makeb. Type
c. Rating
15.28 Panel
a. Make
15.29 List of accessories
15.30 Heat output of the panel
(furnish calculations)
15.31 Overall dimensions of
battery charger panel
15.32 Approximate weight of charger panel
15.33 Schematic diagram and write up Yes/ No
of charger enclosed?
15.34 Spare parts as specified
provided with equipment
SIGNATURE OF BIDDER _________________________
NAME _________________________
DESIGNATION _________________________
COMPANY SEAL DATE _________________________
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SSEECCTTIIOONNBB44
Approved Vendor List
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P2S B4 S d
SECTION B4
APPROVED VENDOR LIST
1. 110 kV circuit breakers - ABB / CGL / Siemens / Alstom
2. 110 kV isolators - Hivelm / Elpro / Versatek
3. 110 kV current transformer - ABB / CGL / Alstom
4. 110 kV voltage transformer - ABB / CGL / Alstom
5. 96 kV surge arrestors - Oblum / Lamco / CGL / Alstom / Elpro
6. Control and relay panels - ABB / Elpro / Alstom / Enpro
7. Protection relays - ABB / Siemens / Alstom
8. Tariff meters - L&T / SEMS
9. Insulators - WSI / JSI / Modern
10. Battery & battery charger - Exide / HI-rel / Power Electronics / SAFT
NIFE / Amararaja