GUJARAT STATE ELECTRICITY CORPORATIOPN LTD Office... · 2017-07-19 · Page 1 of 30 GUJARAT STATE ELECTRICITY CORPORATIOPN LTD . Engineering, procurement and construction (EPC) contract

Page 1 of 30

GUJARAT STATE ELECTRICITY CORPORATIOPN LTD.

Engineering, procurement and construction (EPC) contract for disposing of fly ash and bottom ash for 200MW unit no. 3 &4 and 210MW unit no. 5 from the pumping station to the Dykes including Erection, Testing and Commissioning of pipes and Pumping Station with all Civil, Mechanical ,Electrical & instrumental Works with 1 year operation & maintenance for combine ash slurry pump house at Ukai TPS, Nr. Songadh, Dist. Tapi.

SECTION – IV

(SECTION-E)

DATA SHEET FOR ELECTRICAL WORK

Page 2 of 30

1.0 1000 KVA Distribution Transformer

Sr.

No. Description Unit Particulars

Filled by Bidder

1

General

1.1 Application Distribution

1.2 Specification Reference IS:1180(Part1) (2014)

Energy Efficient

1.3 Installation Out door

1.4 Type of winding Double wound

1.5 Rating KVA 1000

1.6

Cooling ONAN

1.8 No load voltage KV/KV 6.6/0.433

1.9 HV winding Delta

1.10 LV winding Delta

1.11 Impulse Voltage withstand (HV)

KVp

RMS

Provide by manufacture

1.13 Frequency Hz 50

1.14 % impedance (Subject to IS: Tol)

% 4.5

1.15 Maximum total Losses Energy Efficiency Level 1 (3 Star)

1.16 At 50% load KW Provide by manufacture

1.17 At 100% Load KW Provide by manufacture

Efficiently at 100% Load UPF

% 99.10%

Page 3 of 30

1.20.1 Winding

1.20.2 Material of winding Copper

1.21 Winding connection

1.22 1) HV side Delta

1.22.1 2) LV side Delta

1.22.2 Vector Group Dyn11

1.22.3 Temperature at full load – winding

Deg C 40 above ambient

1.23 Temperature at full load- oil.

Deg C 45 above ambient

1.24 Termination detail

1.24.1 HV Outdoor cable Box on HV

1.24.2 LV Suitable cable box LV side porcelain insulator

1.24.3 LV winding end Neutral Will be brought out separately

1.25 Earthing Solid

1.26.1 Tapping’s

1.26.2

Tapping Range +5% to -10%

1.26.3 Steps 2.5%

1.26.4 Tap Changer Off circuit taps on HV

1.27 Dimensions/Weight of Transformer

1.27.1 Dimensions L X W X H

1.27.2 Weights (Approx.)

Page 4 of 30

1.28 Core & Winding

Tank & Fittings

Oil

Total Weight

Oil Quantity (Litres)

1.29 Fittings & Accessories:

1.30 Press Steel radiators.

1.31 Rating diagram plate

1.32 Terminal markings.

1.33 Tank lifting lug

1.34 Top cover lifting lug

1.35 Drain valve with plug.

1.36 Silica Gel breather.

1.37 Plain oil level gauge.

1.38 Oil filling hole with cover

1.39 Conservator with oil filling hole.

1.40 Air release plug.

1.41 Explosion vent with diaphragm

1.42 Bottom Filter valve with plug.

1.43 Off circuit tap changing with switch position.

1.44 Neutral terminal for separate earthing

1.45 Suitable cable box on H.V. Side

Page 5 of 30

1.46 Suitable cable box on L.V. side

1.47 Top Filter Valve.

1.48 Jacking Pads.

1.49 6" Dial type OTI with alarm trip contact

1.50 6" Dial type WTI with alarm trip contact.

1.51 Double Float Buchcholz relay with alarm & trip contacts

1.52 Marshalling box.

Page 6 of 30

2.0 HT Station Bus C3A #5

Existing NGEF make Panel

Sr. No.

Description Unit As Per Requirement

To be Filled by

Contractor

1 Quantity Set Qty 1 One Main

With suitable size dummy panel make: ABB Model: VD4 12.12.40

2 Reference Drawings

3 Switchgear cubicles and bus bar Ratings

(a) Rated Voltage, phases and frequency 12 KV, 3 Ph, 50 Hz

(b) System Neutral Earthing Effectively earthed / Non-effectively earthed

Solidly Earthed.

(C) Max. System Voltage KV 13.2

(d) One Minute power frequency withstand voltage

KV (rms) 20

(e) 12/50 µsec. Impulse withstand voltage KV (peak)

60

(f) Short circuit withstand (i) Short time (3 sec) at rated voltage

KA (rms) 40

(ii) Dynamic rating KA (Peak)

47

(g) Reference ambient temperature 45⁰ C

(h) Maximum temperature of bus bar droppers, connectors and contacts at continuous current rating under site reference ambient temperature

Within Limits as specified by IEC

(i) Continuous current rating of bus bar A 1250

(j) Bus bar material Aluminum

(k) Bus bar insulation Fully insulated by encapsulation in epoxy resin with Mould caps protecting all joints or shrinkable PVC sleeves and tapes.

(l) Cable Entry As per Site Condition

Page 7 of 30

(m) Cable type 11KV XLPE unearth Aluminum conductor. (i) Incoming Feeder.

3C ×180 mm2

(ii) Outgoing Feeder. 3C ×180 mm2

4 Switchgear Construction requirements

(a) Thickness of sheet steel Frame, frame enclosures, doors, covers and partitions.

Mm Cold Rolled- 2.0

(b) Degree of Protection IP 4X.

(c) Colour finish shade RAL 7032

RAL7032

(d) Earthing Bus Material & size mm×mm Aluminum 40X10

(e) Earthing Conductor material & size mm×mm GI

(f) Clearance in Air of Live parts (i) Phase to phase (ii) Phase to earth.

Mm 110 & 77.

5 Breaker Particular

(a) Circuit Breaker type Vacuum, Horizontally draw out type.

Applicable Standard IEC-62271/100

(b) Voltage, Phases and frequency 12KV, 3 Ph, 50Hz.

(c) Rated Operating duty 0-0.3 Sec-CO-3 min-CO

(d) Rated current at reference ambient temperature Incoming breaker

A 1250

Outgoing breaker A 1250

(e) Rated breaking capacity KA (rms) 40

(f) Rated making current KA (Peak)

46.84

(g) Short time current withstand for 1 sec. duration.

KA (rms) 40

(h) Total break time Less than 3 cycles

(i) Operating Mechanism type Spring charged store energy

(j) Minimum no. of Auxiliaries contacts 6 NO,6 NC

(k) Withstand test voltage

(I) One Minute power frequency KV (rms) 20

(II) 1.2/50 µ sec. impulse KV (peak)

60

(l) Auxiliaries control voltage

(I) For closing / tripping coil 220 V DC

(II) For Spring charging motor 220V DC

(III) For Space heaters & lighting 220V AC

Page 8 of 30

(m) Anti-pumping features NA

(n) Latching requirement Trip free

(o) Trip coil circuit of all breakers shall be provided with trip circuit supervision relays, to supervise the circuit in both open and closed condition of circuit breaker

Provided

6 Current transformer

(a) Type Cast Resin

(b) Class of Insulation Class B or better

(C) Rated Current ratio and burden

(I) Incomer Feeders-Protection & Metering CL: 1/5P10, Ith 26.3KA / 1SEC

100/1A,10VA & 100/1A,10VA

(II) Output Feeders- Protection & Metering

75/5A, 10VA &

75/5A, 10VA

(d) Accuracy class

(I) Metering 1

(II) Protection 5P10

(e) Short time 1sec. Current rating KA (rms) 40 KA/3 Sec

(f) Dynamic rating KA(Peak) 46

7 Voltage Transformers

(a) Type Cast Resin

(b) Rated Voltage

(I) Primary V 6600/⎷3

(II) Secondary-SI V 110/⎷3

(C) Method of connection

(I) Primary-P Star, Earthed

(II) Secondary- SI Star, Earthed

(d) Application-SI Provide

(e) Rated Burden VA 100

(f) Accuracy class

(I) Metering 1

(II) Protection Standard

(g) Rated Voltage Factor

(I) Continuous 1.1

(II) Short Time 1.5

(h) Insulation Class Class B or better

8 Relays

(a) Inverse time over current relay

Required

(b) Instantaneous over current relay

(C) Motor Protection relay

(d) Instantaneous earth fault relay

Page 9 of 30

(e) Inverse time earth fault relay

(f) Under voltage relay, lock out relay fuse failure relay auxiliary relay, Motor Protection relay

Required

i Indicating Meter Required

a Applicable standard Standard

b Type of movement DIGITAL

ii Load Manager Required

a Make As per Stranded

b Details NA

9 Annunciation

(a) Incoming feeders

(I) Main Incoming Circuit Breaker Trip Required

(II) Transformer #1 Circuit Breaker Trip Required

(III) Transformer #2 Circuit Breaker Trip Required

(IV) Transformer #1 Buchholz Relay alarm Required

(V) Transformer #1 Buchholz Relay Trip Required

(VI) Transformer #2 Buchholz Relay alarm Required

(VII) Transformer #2 Buchholz Relay trip Required

(VIII) Transformer #1 high oil temperature alarm Required

(IX) Transformer #1 high oil temperature trip Required

(X) Transformer #2 high oil Temperature alarm Required

(XI) Transformer #2 high oil Temperature Trip Required

(c) Spare window Required

10 Cubicle Component

Each 12 KV circuit breaker cubicle shall be provided with the following minimum standard accessories with appropriate size of dummy panel to fix

with existing NGEF Panel.

(a) One control switch ‘trip-neutral-close’ spring return to neutral position.

Required

(b) One control selector switch ‘Load-remote stay-put’ type

Required

(c) Indicating lamps with series resistors. Required

(I)‘Red’ for breaker in ‘ON’ indication (this shall also supervise trip coil)

Required

(II)Green’ for breaker ‘OFF’ position. Required

(III)‘Blue’ for breaker in ‘Spring Charge’ Required

(IV)‘Amber’ for breaker in ‘Auto Trip’ position. Required

(V)‘White’ for breaker closing spring ‘TCH’. Required

Indicating lamps (III), (IV) and (v) shall be provided when positive mechanical indicators for these conditions are not available/visible.

Required

Page 10 of 30

(d) One electrical anti-pumping relay. Required

(e) One Double pole control supply switch and set of fuses.

Required

(f) Cubicle space heater of adequate capacity. Required

(g) 240V, 1 phase, 50 Hz, 5A,3 pin receptacle with switch.

Required

(h) Cubicle lamp. Required

(i) One control selector switch ‘Local-remote stay-put’ type.

Required

3.11 Auxiliary A.C. Supply

240V, 1 Ph, 50 Hz supply shall be made available to each cubicle of 11 KV switchgear separately for provision of following.

(a) Spring charging motor Required

(b) Cubicle space heater Required

(c) Cubicle Lamp Required

Page 11 of 30

3.0 HT Unit Bus 4B #4

Existing NGEF make Panel

Sr. No.


To be Filled by

Contractor

1 Quantity Set Qty 1 One Main

With suitable size dummy panel make: ABBModel: VD4 12.12.40



(a) Rated Voltage, phases and frequency

12 KV, 3 Ph, 50 Hz


Solidly Earthed.



KV (rms) 20

(e) 12/50 µsec. Impulse withstand voltage

KV (peak)

60


KA (rms) 40


47

(g) Reference ambient temperature

45⁰ C



(i) Continuous current rating of bus bar

A 1250


Page 12 of 30

(k) Bus bar insulation

Fully insulated by encapsulation in epoxy resin with Mould caps protecting all joints or shrinkable PVC sleeves and tapes.

(l) Cable Entry As per Site Condition


3C ×180 mm2




mm Cold Rolled- 2.0



RAL7032


(e) Earthing Conductor material & size

mm×mm GI


mm 110 & 77.




(b) Voltage, Phases and frequency

12KV, 3 Ph, 50Hz.



A 1250



Page 13 of 30


46.84


KA (rms) 40



(j) Minimum no. of Auxiliaries contacts

6 NO,6 NC


(I) One Minute power frequency

KV (rms) 20


60




(III) For Space heaters & lighting

220V AC




Provided


(a) Type Cast Resin




100/1A,10VA & 100/1A,10VA


75/5A, 10VA &

75/5A, 10VA

(d) Accuracy class

(I) Metering 1


(e) Short time 1sec. Current rating

KA (rms) 40 KA/3 Sec


Page 14 of 30


(a) Type Cast Resin

(b) Rated Voltage








(f) Accuracy class

(I) Metering 1



(I) Continuous 1.1

(II) Short Time 1.5


8 Relays


Required





(f) Under voltage relay, lock out relay fuse failure relay auxiliary relay, Motor protection Relay

Required






b Details NA

9 Annunciation





(IV) Transformer #1 Buchholz Relay alarm

Required

Page 15 of 30


(VI) Transformer #2 Buchholz Relay alarm

Required


(VIII) Transformer #1 high oil temperature alarm

Required

(IX) Transformer #1 high oil temperature trip

Required

(X) Transformer #2 high oil Temperature alarm

Required

(XI) Transformer #2 high oil Temperature Trip

Required



Each 12 KV circuit breaker cubicle shall be provided with the following minimum standard accessories with appropriate size of dummy panel to fix with existing NGEF Panel.


Required


Required



Required



(IV)‘Amber’ for breaker in ‘Auto Trip’ position.

Required

(V)‘White’ for breaker closing spring ‘TCH’.

Required


Required



Required

(f) Cubicle space heater of adequate capacity.

Required


Required


Page 16 of 30


Required






Page 17 of 30

4.0 HT PUMPING STATION SUB STATION PANEL

Sr.

No.


To be Filled by

Contractor

1 Quantity Set 2+2=4 Set Main

With suitable size Side cable entry panel make: ABB Model: VD4 12.12.40



(a) Rated Voltage, phases and frequency 12 KV, 3 Ph, 50 Hz


Solidly Earthed.



KV (rms) 20

(e) 12/50 µsec. Impulse withstand voltage KV (peak)

60


KA (rms) 40


47

(g) Reference ambient temperature 45⁰ C



(i) Continuous current rating of bus bar A 1250


(k) Bus bar insulation Fully insulated by encapsulation in epoxy resin with mould caps protecting all joints or shrinkable PVC sleeves and tapes.

Page 18 of 30

(l) Cable Entry Both right and Left Side Cable Entry


3C ×180 mm2




mm Cold Rolled- 2.0



RAL7032


(e) Earthing Conductor material & size mm×mm GI


mm 110 & 77.




(b) Voltage, Phases and frequency 12 KV, 3 Ph, 50Hz.



A 1250




46.84


KA (rms) 40



(j) Minimum no. of Auxiliaries contacts 6 NO,6 NC


(I) One Minute power frequency KV (rms) 20


60

Page 19 of 30




(III) For Space heaters & lighting 220V AC




Provided


(a) Type Cast Resin




100/1A,10VA & 100/1A,10VA


75/5A, 10VA &

75/5A, 10VA

(d) Accuracy class

(I) Metering 1


(e) Short time 1sec. Current rating KA (rms) 40 KA/3 Sec



(a) Type Cast Resin

(b) Rated Voltage








(f) Accuracy class

(I) Metering 1



(I) Continuous 1.1

(II) Short Time 1.5


8 Relays

Page 20 of 30


Required





(f) Under voltage relay, lock out relay fuse failure relay auxiliary relay. Motor Protection relay

Required






b Details NA

9 Annunciation





(IV) Transformer #1 Buchholz Relay alarm Required


(VI) Transformer #2 Buchholz Relay alarm Required


(VIII) Transformer #1 high oil temperature alarm Required

(IX) Transformer #1 high oil temperature trip Required

(X) Transformer #2 high oil Temperature alarm Required

(XI) Transformer #2 high oil Temperature Trip Required



Each 12 KV circuit breaker cubicle shall be provided with the following minimum standard accessories. with electrical and Mechanical interlocking provision


Required


Required



Required



(IV)‘Amber’ for breaker in ‘Auto Trip’ position. Required

Page 21 of 30

(V)‘White’ for breaker closing spring ‘TCH’. Required


Required



Required

(f) Cubicle space heater of adequate capacity. Required


Required



Required






Page 22 of 30

4.0 100 KVA Auxiliary Transformer

Sr. No.

Description Unit Particulars To be Filled by

Bidder

1

General Dry Type Resin

Cast Transformer

1.1 Application Auxiliary

1.2 Specification Reference IS:11171

IS 2026

1.3 Insulation Class ‘F’ Class

1.4 Type Dry Type Resin Cast Transformer

1.5 Rating KVA 100

1.6

Cooling Air Natural (AN)

1.8 No load voltage KV/KV 0.433/0.433 kV

1.9 HV winding Delta

1.10 LV winding Star

1.11 Impulse Voltage withstand (HV)

kVp RMS

Provide by manufacture

1.13 Frequency Hz 50

1.14 % impedance (Subject to IS: Tol)

% 4.0

1.15 Maximum total Losses Standard

1.16 At 50% load KW Provide by manufacture

1.17 At 100% Load KW Provide by manufacture

Efficiently at 100% Load UPF % 98.60%

1.20.1 Winding

1.20.2 Material of winding . Copper

Page 23 of 30

1.21 Winding connection

1.22 1) HV side Delta

1.22.1 2) LV side Star

1.22.2 Vector Group Dyn11

1.22.3 Max Temperature rise Deg C 90’ C, over 50’ above ambient

1.23 Ambient Temperature. Deg C 50 above ambient

1.24 Termination detail

1.24.1 HV Not Applicable

1.24.2 LV Cable end box primary and secondary

1.24.3 LV winding end Neutral Provided

1.25 Earthing Solid

1.261 Tapping’s

1.262

Tapping Range + 5%

1.263 Steps 2.5

1.26.4 Tap Changer -5%,-2.5%, +2.5%,+5%

1.27 Dimensions/Weight of Transformer

Dimensions L X W X H

Weights (Approx.)

Core & Winding

Tank & Fittings

Total Weight

1.28 Rating diagram plate

1.29 Terminal markings.

Page 24 of 30

1.30 Tank lifting lug.

1.31 Primary Bushing 1.1 kV class

1.32 Secondary Bushing 1.1 kV class

1.33 Off circuit tap changing links

1.34 Neutral terminal for separate earthing

1.35 Suitable cable box on L.V. Side (LT)

1.36 Suitable cable box on L.V. side. (LT)

1.37 Jacking Pads.

Page 25 of 30

5.0 HT CABLE

Sr

No Particulars Unit

Filled by Bidder

1 Type of Cable A2XFY

2 Voltage Grade kV 6.6 Kv

3 No of cores X size in sq.mm

2 run 3 X 240 for C2B Power Supply Source 2 run 3 X 240 for 4B Power Supply Source

4

a) Maximum conductor

temperature under normal

operating conditions

90°C

b) Maximum conductor

temperature at the termination

of short circuit

250°C

5 a) Permissible Voltage Variation ± 10%

b) Permissible Frequency

Variation ± 5%

c)Combined Voltage &

Frequency variation ± 10%

6 Conductor

a) Material

H4 Grade Aluminum as

per Class 2 of

IS:8130/84, latest

b) Maximumd.c. resistance of

conductor at 20° C (ohm/km) 0.443

c)Shape Stranded Compact

Circular

7 Conductor Screening

a) Material Extruded Semi-

Conducting Compound

b) Nominal thickness (mm) 0.3

8 Insulation

a) Material XLPE as per IS

7098(Pt-2)/85, latest


Page 26 of 30

9 Insulation Screening

(i)Non - Metallic

a) Material Extruded

Semi-conducting compound


(ii)Metallic

a) Material Copper Tape

b) Approximate thickness (mm) 0.045

10 Inner Sheath

a) Material Extruded PVC Type

ST2 to IS:5831/84

b) Minimum thickness (mm) 0.5

11 Armoring

a) Material Gal.Steel

b) Type of armoring Flat Strip

c)Nominal size of armor (mm) 4.0 x 0.8

12 Outer Sheath

(i) Material

(ii) Thickness (mm)

PVC Type 'ST2' as per

IS:5831/84

1.88 (Min.)

13 Electrical Parameters

a) Max. a.c. resistance of conductor at 90° C(ohm/km) 0.568

b) Approx. Cable Capacitance

(mfd/km) 0.25

c) Approx. Cable reactance

(ohm/km) 0.106

d) Impedance of cable

(ohm/km) 0.578

14 Continuous Current carrying

capacities

(a) In Ground at 30°C (A) 161

(b) In Air at 40°C (A) 184

Page 27 of 30

15

Short Circuit rating of

conductor for the

duration of 1 sec (kA)

6.61

16 Standard to which the cables

confirm

IS 8130/84, IS 7098

Part 2/85, IS 5831/84,

IS

3975/88 etc. with

latest up to date

amendments

17 Approx. Overall diameter (mm) Provide by

Manufacture

Page 28 of 30

6.0 Cable Tray6.0 Cable Tray6.0 Cable Tray6.0 Cable Tray

Sl. Sl. Sl. Sl.

NoNoNoNo

DescriptionDescriptionDescriptionDescription UnitUnitUnitUnit Supplier’s offerSupplier’s offerSupplier’s offerSupplier’s offer To be Filled by BidderTo be Filled by BidderTo be Filled by BidderTo be Filled by Bidder

1 Type Ladder/ Perforated Type

2 Material. /Thickness

3 Size of Runner mm

4 Construction Hot Dip G.I.

5 Standard Length mtr 2.5 mtr

6 Painting thickness mm Two coats of Red oxide

primer & final coat of

aluminum paint

7 Standard Width mm As per your site requirement

8 Accessories -2 # Coupler

plates with each length

Yes/No Yes

9 Hardware – Galvanized

Bolts Nuts and Washers

of required dimeter

Yes/No Yes

10 Load Bearing Capacity

Between two supported

point

Kg As per cable weight and cable

tray Size

11 Load bearing capacity

under cantilever condition

Kg As per cable weight and cable

tray Size

Page 29 of 30

Sr. No.

Technical Data Specification Design Requirement

Data to be filled up /Confirmed by Bidder

1 Site Condition

1.1 1.2 1.3

Type Mounting Ambient Temperature

Outdoor Floor/Plinth, Outdoor 50° C.

2 OPERATIVE CONDITION

2.1 2.2 2.3 2.4

Voltage System Frequency Fault Current

415 V ± 10 %, 3 phase 3 Ø, 4 WIRE 50 HZ, + 3 % / - 6 %. 25 kA for 1 sec

3 ENCLOSURE

3.1 Top cover, bottom sheet, component mounting plates, side covers, Canopy

2 mm

3.2 Front doors, rear doors, cable alley doors, Cubicle partition covers

1.6 mm

3.3 Gland plate 3 mm

3.4 Base frame Not Applicable

4 CONTROL SYSTEM

4.1

4.2

4.3

Voltage For Indication For Metering For Protection Control Supply Through Control Transformer Control Wiring

Not Applicable

5 BUSBAR

5.1 A. B. C. D.

E. F.

Phase Bus Bar Material Support Insulation Insulating Barriers Max. Current Density Permissible Permissible temp. rise over ambient

Aluminum SMC/DMC Epoxy Moulded(Resin) Fiber Glass / Poly Carbonate Of Minimum 1.5 Mm Thick 0.8 Amp. / mm² 40 deg. Cen

5.2 5.3

Neutral Bus bar Material Earth Bus Bar Material

50% of phase bus Aluminum Size as per SLD GI

6 PAINTING

Page 30 of 30

6.1

6.2 6.3 6.4 6.5

Type Of Paint Shade Exterior Interior Degree Of Protection Max. Temperature Rise Inside The Panel (°C.)

Powder coated RAL-7032 Semi pebble white IP 5x 35 ° C. above ambient

7 CABLE ENTRY Bottom

8 CONTROL TRANSFORMER

9 HARDWARE (ZINC PLATED)

10 SPACE HEATER

11 POCKET FOR DRAWINGS AT DOOR

12 Illumination and switched power plug

Documents

GUJARAT STATE ELECTRICITY CORPORATIOPN LTD Office... · 2017-07-19 · Page 1 of 30 GUJARAT STATE ELECTRICITY CORPORATIOPN LTD . Engineering, procurement and construction (EPC) contract