CPCPL-Super Critical TPP-Tharangambadi [2 x 660 MW] Main Plant Package Sch-IIIC/3: 1 DCPL-11Z02

   VOLUME : IIIC 

 SCHEDULE‐IIIC/3 

 GENERATOR BUSDUCT

1.0 ISOLATED PHASE BUS DUCT 1.1 Make

a) Conductor :

b) Enclosure : 1.2 Type : 1.3 Reference Standard

a) Conductor :

b) Enclosure : 1.4 Rated Voltage KV : 1.5 Phase Nos. : 1.6 Frequency Hz : 1.7 Insulation Level a) 1 min. dry power frequency withstand KV rms :

b) 10 sec.wet power frequency withstand KV rms :

c) Basic Impulse KV peak : 1.8 Rated Continuous Current a) Main run Amp. : b) Tap-off run Amp : c) Delta run Amp :

CPCPL-Super Critical TPP-Tharangambadi [2 x 660 MW] Main Plant Package Sch-IIIC/3: 2 DCPL-11Z02

1.9 Maximum temperature rise over 50 Deg.C ambient Indoor Outdoor a) Bus Conductor Deg.C : b) Bus Enclosure and support

structure Deg.C : 1.10 Guaranteed Calculated Losses per set

of Bus Duct without any positive tolerance a) Conductor KW : b) Enclosure KW : c) Total KW : 1.11 Rated Short Time Current Symmetrical Momentary KA rms for KA peak 1 Sec. a) Main Run : b) Tap-off Run : c) Delta run Amp : 1.12 Weight per metre run of Isolated Bus Duct a) Main run Kg : b) Tap-off Run Kg : c) Delta run Amp : 1.13 Shipping Data a) Weight of heaviest Pacakage Kg : b) Dimention of largest Package (L x B x H) mm : 1.14 Material and Grade a) Conductor • Main Run : • Tap-off Run : b) Enclosure • Main Run :

CPCPL-Super Critical TPP-Tharangambadi [2 x 660 MW] Main Plant Package Sch-IIIC/3: 3 DCPL-11Z02

• Tap-off Run : 1.15 Conductivity a) Conductor • Main Run : • Tap-off Run : b) Enclosure • Main Run : • Tap-off Run : 1.16 Conductor Shape a) Main Bus : b) Tap-off Bus : c) Hollow conductor : Yes/No 1.17 Conductor Size a) Main Bus Sq.mm : b) Tap-off Bus Sq.mm : 1.18 Enclosure Data Phase Outside Thickness Spacing Diameter mm. mm. mm. a) Main Duct : b) Tap-off Duct : 1.19 D.C. Resistance at 20 Deg.C in micro Ohm/metre/phase Conductor Enclosure a) Main Run : b) Tap-off Run : 1.20 Skin‐effect Ratio a) Main Bus : b) Tap-off Bus :

CPCPL-Super Critical TPP-Tharangambadi [2 x 660 MW] Main Plant Package Sch-IIIC/3: 4 DCPL-11Z02

1.21 50 Cycle Reactance in Ohm/ metre/phase a) Main Run : b) Tap-off Run : 1.22 3 Ph. Capacitance to Ground in Microfarad/   metre/phase a) Main Run : b) Tap-off Run : 1.23 Losses in Watt/metre/phase a) Main Run : b) Tap-off Run : 1.24 Enclosure Finish Outside : Inside : 1.25 Phase to earth clearance provided mm : 1.26 Bus Insulator a) Make : b) Type : c) Reference Standard : d) Number per support : e) Voltage class KV : f) 1 min. dry power frequency

withstand voltage KV rms :

g) 1 min. wet power frequency withstand voltage KV rms :

h) Impulse withstand voltage KV peak :

I) Creepage distance mm : j) Compression strength Kg :

CPCPL-Super Critical TPP-Tharangambadi [2 x 660 MW] Main Plant Package Sch-IIIC/3: 5 DCPL-11Z02

k) Cantilever strength Kg : 1.27 Supporting Steel Structure Hot-dip galvanised Yes/No: 1.28 Grounding Material and size of ground bus

if provided separately : Number of ground pads provided for

50 x 6 galvanised steel flats : 1.29 Generator Terminal Adaptor Phase Neutral Box Side Side

a) Material of enclosure :

b) Thickness of enclosure :

c) Material of interphase barrier :

d) Thickness of interphase barrier : 1.30 Seal‐off Bushings a) Make : b) Type : c) Reference Standard : d) Rated Voltage KV : e) 1 minute power frequency withstand voltage : Dry KV : Wet KV : f) Impulse withstand KVP : g) Creepage distance mm : h) Weight of each bushing : 1.31 Bus Duct Layout Reference Drawing No. : 1.32 Catalogue enclosed for various pieces of

CPCPL-Super Critical TPP-Tharangambadi [2 x 660 MW] Main Plant Package Sch-IIIC/3: 6 DCPL-11Z02

equipment Yes/No : 1.33 Describe arrangement that provides

"minimum flux" design of bus : 1.34 Indicate recommended protection for Owner's structural steel/reinforcing steel, if any : 2.0 CURRENT TRANSFORMER 2.1 Make : 2.2 Type : 2.3 Ratio : 2.4 Reference Standard : 2.5 Class : 2.6 Voltage Class : 2.7 Rated frequency : 2.8 Type of insulation : 2.9 Temperature rise at rated current over 105 Deg. C ambient : 2.10 Short Time Rating Symmetrical Momentary KA rms for KA Peak 1 Sec. a) Main Run C.T.S : b) Tap-off Run C.T.S : 3.0 VOLTAGE TRANSFORMER 3.1 Make : 3.2 Type : 3.3 Reference Standard : 3.4 Voltage Class KV : 3.5 Basic Impulse Level KV Peak : 3.6 Type of Insulation :

CPCPL-Super Critical TPP-Tharangambadi [2 x 660 MW] Main Plant Package Sch-IIIC/3: 7 DCPL-11Z02

3.7 Maximum temperature rise over 50 Deg.C ambient Deg.C : 3.8 Rated Frequency Hz : 3.9 Over voltage factor a) Continuous : b) 30-Seconds : 3.10 No. of secondary windings per voltage transformer : 3.11 Winding Connections a) Primary : b) Secondary : 3.12 V.T. Ratings Metering/ Performance AVR Relaying Test, EHG

AVR & EHG AVR & EHG System System System

a) Primary Voltage KV : b) Secondary Voltage : c) Rated Output VA : d) Accuracy Class : 3.13 V.T. Fuses a) Continuous Current Amp : H.V. : L.V. : b) Short Circuit Rating KA Symm H.V. : L.V. : c) Rated voltage Volt H.V. :

CPCPL-Super Critical TPP-Tharangambadi [2 x 660 MW] Main Plant Package Sch-IIIC/3: 8 DCPL-11Z02

L.V. : 4.0 LIGHTNING ARRESTOR 4.1 Make : 4.2 Type : 4.3 Reference Standard : 4.4 L.A.Rating

a) Rated Voltage KV :

b) Nominal discharge current KA :

c) Discharge Class : 4.5 Insulation Level

a) 1‐min.50 Hz withstand : i) Dry KV r.m.s.: ii) Wet KV r.m.s :

b) Impulse withstand KV peak : 4.6 Spark Over Voltage

a) Minimum 50 Hz KV peak :

b) Maximum 1.2/50 micro- sec. KV peak :

c) Maximum front-of- wave KV peak :

d) Maximum switching KV peak : 4.7 Maximum Residual Voltage at    8/20 micro‐sec. current wave

a) 10 KA KV peak :

b) 20 KA KV peak :

c) 40 KA KV peak :

d) 100 KA KV peak :

CPCPL-Super Critical TPP-Tharangambadi [2 x 660 MW] Main Plant Package Sch-IIIC/3: 9 DCPL-11Z02

4.8 Impulse current withstand

a) High current 4/10 micro-sec KA peak :

b) Long duration current for : i) 1000 Microsec KA peak : ii) 2000 Microsec KA peak : 4.9 Porcelain creepage distance KV/mm : 4.10 No. of section per pole No. : 4.11 Approx. dimension (LxBxH) mm : 4.12 Approx weight Kg : 4.13 Catalogue furnished Yes/No : 4.14 Characteristic curve furnished Yes/No : 5.0 SURGE CAPACITOR 5.1 Make : 5.2 Service : 5.3 Type & Catalogue No. : 5.4 Reference Standard : 5.5 Rated voltage KV : 5.6 Rated frequency Hz : 5.7 Rating a) Capacity in micro farad/pole : b) Guarantee tolerance : 5.8 Insulation Class KV : 5.9 Test voltage between terminals : a) A.C. for 1 minute : b) D.C. - 10 seconds :

CPCPL-Super Critical TPP-Tharangambadi [2 x 660 MW] Main Plant Package Sch-IIIC/3: 10 DCPL-11Z02

5.10 Dimensions mm : 5.11 Weight Kg : 5.12 Bushings a) 1 minute dry power frequency withstand test KV : b) 10 second wet power frequency withstand test KV : c) Basic impulse withstand KVP : 5.13 Catalogue furnished ? : 5.14 Discharge resistor furnished ? : 6.0 NEUTRAL GROUNDING TRANSFORMER 6.1 Make : 6.2 Type & Catalogue No. : 6.3 Reference Standard : 6.4 Basic Impulse Level KV peak : 6.5 Class of Insulation : 6.6 Maximum temperature rise over 50 Deg.C ambient Deg.C : 6.7 Transformer Ratings a) Output KVA : b) Primary Voltage KV : c) Secondary Voltage Volt : d) Phase No. : e) Frequency Hz : f) Duty Cycle (Time rating) Hr. :

g) Impedence % :

CPCPL-Super Critical TPP-Tharangambadi [2 x 660 MW] Main Plant Package Sch-IIIC/3: 11 DCPL-11Z02

h) Reactance % :

I) Resistance % : 6.8 Type of transformer cooling : 6.9 Details of Tapping

a) Type :

b) Rating :

c) No. & range of tap : 6.10 Overall Dimension : 6.11 Weight Kg. : 7.0 LOADING RESISTOR 7.1 Make : 7.2 Type & Catalogue No. : 7.3 Reference Standard : 7.4 Resistor Ratings : a) Resistance Ohm : b) Current Amp : c) Voltage Volt : d) Time rating Hr : 7.5 Material : 7.6 Maximum temperature rise over 50 Deg.C ambient Deg.C : 8.0 CUBICLE V.T. & N.G. N.G. Blowing S.P. Traf. Res. Equipt. Control Cabinet 8.1 Type : 8.2 Thickness of sheet steel used mm :

CPCPL-Super Critical TPP-Tharangambadi [2 x 660 MW] Main Plant Package Sch-IIIC/3: 12 DCPL-11Z02

8.3 Dimension mm : 8.4 Weight Kg : 8.5 Finish : a) Inside : b) Outside : 8.6 Degree of Protection : 8.7 Space Heater : a) KW : b) Volt : 9.0 HOT AIR BLOWING UNIT 9.1 Fans a) Make : b) Type : c) Capacity Cu.m/Hr : d) Head at rated speed Static mm of W.C : Total mm of W.C : e) Nos. furnished per set : 9.2 Motor a) Make : b) Type : c) Ratings Output : d) Voltage, Phase, Frequency : e) Insulation class : f) Enclosure : g) Nos. furnished per set :

CPCPL-Super Critical TPP-Tharangambadi [2 x 660 MW] Main Plant Package Sch-IIIC/3: 13 DCPL-11Z02

9.3 Filter Set a) Make : b) Type : c) Size : d) No. furnished per set : 9.4 Heater a) Make : b) Rated KW : c) Voltage, Phase, Frequency : d) Nos. furnished per set : 9.5 Thermostat a) Make : b) Type : c) Model No. : d) Nos. furnished per set : 9.6 Pressure maintained inside busduct in mm of H2O : 9.7 Duct work furnished with all connections & accessories Yes/No : 9.8 C.T. Ratings C.T. Description Quantity

(per set) Nos.

Current Ratio A/A

Output VA Class & ISF

Knee point Voltage Vk

Excitation Current mA at Vk/2

Resistance at 75 Deg C.

MAIN RUN C.T.S Neutral Side A. Overall Differential B. Gen. Relaying

CPCPL-Super Critical TPP-Tharangambadi [2 x 660 MW] Main Plant Package Sch-IIIC/3: 14 DCPL-11Z02

C. Gen. Differential C.T. Description Quantity

(per set) Nos.

Current Ratio A/A

Output VA Class & ISF

Knee point Voltage Vk

Excitation Current mA at Vk/2

Resistance at 75 Deg C.

D. Gen. Metering E. Gen. Relaying Line Side F. Gen. Differential G. AVR Syatem H. Gen. Metering I. Gen. Relaying J. Spare K. GT Differential C.T. Description Quantity

(per set) Nos.

Current Ratio A/A

Output VA Class & ISF

Knee point Voltage Vk

Excitation Current mA at Vk/2

Resistance at 75 Deg C.

TAP-OFF C.T.S. L. Overall Differential M. U.T. Relaying N. U.T. Differential O. GT Differential 9.8 C.T. RATINGS N.G. TRANSFORMER SEC.C.T N. Back-up Overcurrent