GA drgs

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CUSTOMER

PO. NO.

PROJECT

TITLE

BP

SK

KJ

10.08.11 DOC.NO. C-1230-0811-14846

PREPARED BY.

CHECKED BY. APPROVED. BY.

DATE

REV. 00

SHEET. NO. 1 OF 3

DESIGN CALCULATION FOR 415V, 2700A NSPB.

DESIGN CALCULATION

C&S Electric Ltd.

JINDAL INDIA POWER LIMITED

RATING :- 415V, 2700A NSPB

B-1, SITE-IV, SURAJPUR INDL. AREA, KASNA ROAD, GREATER NOIDA BUSDUCT DIVISION

JINDAL INDIA POWER LTD

GAUTAM BUDH NAGAR (UP)

LOI No. PROJ/PUR/BUSDUCT/JINDAL/49 dt.31.5.11

M/S KIRLOSKAR BROTHERS LIMITED

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C & S ELECTRIC LIMITED

CUSTOMER : M/S KIRLOSKAR BROTHERS LIMITED

PO. NO. : LOI No. PROJ/PUR/BUSDUCT/JINDAL/49 dt.31.5.11 PROJECT : JINDAL INDIA POWER LTD

C&S DOC. NO. : C-1230-0811-14846 REV. : 00 DATED 10.08.11 BHEL NO. :-

SL

No. Description Data Data Unit REMARKS

Table- 1 2700A

1 Enclosure W idth WE = 850 mm Ref STD Drawings

2 Enclosure Height HE = 450 mm Ref STD Drawings

3 Enclosure Sheet Thk TE = 3 mm Ref STD Drawings

4 Enclosure Material = Al Alloy Ref STD Drawings 5 Design Ambient Temp Tamb = 50 0C Ref Technical data Sheet 6 Maximum allowable Temp. for Busbar Talo = 40 0C Ref Technical data Sheet

7 Busbar configration (Conventional / interleved) Interleaved

8 Short Circuit Current (rms) Symmetrical for each busbarISC = 50 KA Ref Technical data Sheet

9 Peak Short circuit Current ISCP = 105.0 KA Ref Technical data Sheet

10 Duration of Fault T = 1 Seconds Ref Technical data Sheet 11 Phase spacing S = 115 mm Ref STD Drawings 12 Initial Temperature of busbar θ1 = 90 0

C Tamb +Talo

13 Final Temperature θ2 = 260 0_C _{As per IEEE C37.23.}

14 Adapted Insulator span LA = 1 M Adapted / Assumed

15 Busbar Chosen per phase Flat = 2 Nos Ref STD Drawings 16 Busbar Chosen Neutral Flat = 1 Nos Ref STD Drawings 17 W idth of busbar WBB = 152.4 mm Ref Technical data Sheet

18 Thickness of Busbar TBB = 9.53 mm Ref Technical data Sheet

19 Actual Cross sectional Area of Busbar ABB = 2905 Sq. mm For Flat Edge

20 Rating of Busduct required IReq = 2700 Amp Ref Technical data Sheet

21 Open Air rating of busbar for 50

0

Rise over

400_{ambient in still but unconfined air for} IOA = 4240 Amp Ref Indal book

A

I Min. Cross Section Area of Conductor Amin = ISCeTIo2.17x10

4_e{log

10[(θ2+258)/(θ1+258)]}p

= 5.544 Sq. cm = 554.4 Sq. mm

II Actual cross sectional Area of Busbar = 2905 Sq. mm Ref. Table No. 1 sl. No. 19

III Hence the busbar size chosen is safe for

Short time rating Yes Refer :- Aluminum Busbar Handbook (Indal)

B

I Peak electromagnetic force along the center

line of Busbar without Enclosure FM = Mx2.05x(ISCP)2x10-8xdxk/S (Refer NGK Insulator Catalogue)

W here Multiplying Factor M = 0.866

II ISCP for Interleaved Busbar ISCP = 52.5 KA

Steady state Factor d = 0.375 Shape correction Factor k = 0.88

Therefore FM = 140.41 Kg/m

SUPPORT INSULATOR SPAN CALCULATION UNDER SHORT CIRCUIT

Design calculation for Non Segregated Phase Busduct (415V) 2700A

Legends

Table- 2

SHORT TIME THERMAL WITHSTAND CAPABILITY OF BUSBAR

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C & S ELECTRIC LIMITED

CUSTOMER : M/S KIRLOSKAR BROTHERS LIMITED

PO. NO. : LOI No. PROJ/PUR/BUSDUCT/JINDAL/49 dt.31.5.11 PROJECT : JINDAL INDIA POWER LTD

C&S DOC. NO. : C-1230-0811-14846 REV. : 00 DATED 10.08.11 BHEL NO. :-

SL

No. Description Data Data Unit REMARKS

Design calculation for Non Segregated Phase Busduct (415V) 2700A

Legends

III Limiting the Max Fiber stress of Al Busbar FS = FMXL 2

x100/10xZ Kg/m IV Maximum Allowable Insulator Span L = eo(FSx10xZ) / (FMx100)p

Limiting the Max Fiber stress of Al Busbar FS = 1056 Kg/cm2AL BUSBAR HAND BOOK

Section Modulus Z = 2.31 CM3

Therefore L = 1.32 m

V Average span adopted LA = 1.00 m REF TABLE-1

VI Hence adapted insulator span is Safe Yes

C

(Temperature Rise Calculation) I Derating / Uprating Factor

a Temperature Rise Correction factor a = 0.880 For dig C over dig C Ambient CSA of Busbar / Total CSA of Enclosure = 2.658 %

b Enclosure Correction Factor b = 0.809 Ref Indal Al Busbar Handbook Phase Spacing / busbar width

Sectional Area of Busbar / Total

Cross-Sectional Area of Enclosure = 12.067

c Proximity Effect factor c = 1.00 Ref Indal Al Busbar Handbook Phase Spacing / Busbar Thk. 12.00

d Painting Factor d = 1.2 Ref Indal Al Busbar Handbook e Enclosure material factor (for Al=1, MS=0.85) e = 1

II Combined correction Factor Fc = = axbxcxdxe Therefore Fc = = 0.8538

III Rating of busbar after applying combined = 3620 Amp IV Rating of Busduct required = 2700 Amp

V Calculated Temperature Rise = 24.3 0_C

VI Hence busbar size chosen is adequate Yes BUSBAR SELECTION FOR CONTINUOUS CURRENT RATING

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CUSTOMER ;-M/S KIRLOSKAR BROTHERS LIMITED

PO.NO. :- LOI No. PROJ/PUR/BUSDUCT/JINDAL/49 dt.31.5.11 PROJECT :-JINDAL INDIA POWER LTD

DOC NO. :- C-1230-0811-14845 SHEET 2 OF 5 REV - 00

C&S ELECTRIC. Ltd.

SL.

NO. DESCRIPTION 415V, 2700A

1.0

1.1 Manufacture of Busduct 1.2 Service

1.3 Cooling System 1.4 Type of Busduct 1.5 System Nominal Voltage 1.6 Rated Voltage Class

1.7 Continuous Current Rating 2700A

1.8 Frequency

1.9 Reference Standard 1.10 No. of Phase

1.11 Short Time Current rating for 1 Sec. withstand 1.12 Dynamic Current Rating

1.13 Temp. Rise (over an ambient of 50ºC) while carrying rated continuous current (Max.)

a) Busbar b) Enclosure

1.14 Average Weight of Busduct per meter (Approx) 95 Kgs. 1.15 Degree of Protection

1.16 1 Minute Dry Power Frequency withstand voltage

2.0

2.1 Material/Grade 2.2 Shape

2.3 Size (mm) per Phase 2700A-2-152.4X9.53/PH & 1-152.4X9.53/N

GENERAL-BUSDUCT BUSBAR / CONDUCTOR IS: 8623 Non-Segregated Phase 415V 1.1KV 50 Hz

TECHNICAL DATA SHEET

C&S ELECTRIC Ltd. Indoor/Outdoor

Air Natural

Triple Pole & Neutral 50 KA (rms) 105 KA (peak) 40°C 20°C 2.5 KV (rms) IP - 55 AL. ALLOY. GR-63401 WP Rectangular Bar

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C&S ELECTRIC. Ltd.

SL.

TECHNICAL DATA SHEET

2.4 Cross Sectional Area of busbar 2700A = 2905 SQ.mm/PH & 1452 SQ.mm/N 2.5 Configuration 2700A = R Y B N R Y B (Interleaved Arrgt.) 2.6 Busbar Finishing

2.7 Busbar Connection hardware material 2.8 Busbar Connection Hardware Size

2.9 Recommended Bolt Torque for Busbar Joints

3.0 3.1 Material Aluminium 3.3 Shape 3.4 Size of Enclosure (mm) 850 x 450 3.5 Thickness of Enclosure 3 mm 3.6 a) Interior b) Exterior 3.7 Material of Gasket

3.8 Flange joint Hardware Material 3.9 Flange Joint Hardware Size

4.0

4.1 Material Aluminium

4.2 Size

4.3 Thickness 3mm

4.4 Location / Position Top / Bottom

ENCLOSURE

Painting

ACCESS DOOR / INSPECTION COVER

Matt Black HTS electro zinc passivated

MS electro zinc passivated M10 Bolt + 1N + 2PW + 1SW

Matt Black RAL-7032

M12 Bolt + 1N + 2PW + 1SW 5.5 Kg - mtr.

Outdoor slopping top/ indoor without Sloping Top

EPDM

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C&S ELECTRIC. Ltd.

SL.

TECHNICAL DATA SHEET

4.5 Type of Flange Joints 4.6 Cover joint Hardware Material 4.7 Cover Joint Hardware Size

5.0 5.1 Type 5.2 Material 5.3 a) Nominal Voltage b) Highest Voltage

5.4 Number of Support per Location

5.5 Average Span 1m

5.6 Size of SMC SUPPORT 70x70

5.7 Minimum Creepage Distance

6.0 6.1 Type 6.2 Material 6.3 a) Nominal Voltage b) Highest Voltage 6.4 Minimum Creepage Distance

6.5 Weight per Sealing Plate (Appx.) 6 Kg

SUPPORTING INSULATOR

With EPDM Gasket

Voltage Class

SEAL OFF PLATE

MS electro zinc passivated M8x35+N+2PW+1SW Indoor/Outdoor Two 25 mm SMC 415 V 650 V 25 mm INDOOR FRP 415 V Voltage Class 650 V

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C&S ELECTRIC. Ltd.

SL.

TECHNICAL DATA SHEET

7.0 7.1 Phase to Phase 7.2 Phase to Earth 8.0 8.1 Material/Grade 8.2 Shape 8.3 Size 9.0 9.1 Type Indoor 9.2 Power 60 W 9.3 Voltage 240 V 9.4 Phase Single 9.5 Thermostat 30-110°C

9.6 Degree of Protection For Marshalling Box IP-55

BP SK KJ

PREPARED BY CHECKED BY APPROVED BY

Space Heater MINIMUM CLEARANCE Flat 50x10 25.4mm 25 mm AL. ALLOY. GR-63401 WP GROUNDING CONDUCTOR

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e l e c t r i c

P.O No

_{LOI No. PROJ/PUR/BUSDUCT/JINDAL/49 dt.31.5.11}

TITLE:

PROJECT: JINDAL INDIA POWER LTD

M/S KIRLOSKAR BROTHERS LIMITED

GENERAL ARRANGEMENT OF 415V, 2700A, TPN, NSPB

MANUFACTURER

CUSTOMER

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SL./NO. DRG. NUMBER SHEET DRAWING. TITLE

GENERAL ARRANGEMENT OF 415V, 2700A, TPN, NSPB

B-1, SITE-IV, SURAJPUR INDL. AREA, KASNA ROAD, GREATER NOIDA

BUSDUCT DIVISION

e l e c t r i c

NOS.

REV. NO.

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NAME OF ITEM

ITEM No. DESCRIPTION GRADE/TYPE MATL.

TYP. CROSS SECTIONAL VIEW OF 415V, 2700A NSPB.

BUSDUCT DIVISION

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BUSDUCT DIVISION

e l e c t r i c

No. ITEM ITEM DESCRIPTION NAME OF MATL. QTY.

GENERAL

NOTES:-PLAN

~~~~

ELEVATION

~~~~~~~~

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BUSDUCT DIVISION

e l e c t r i c

CROSS - SECTIONAL VIEW OF ENCLOSURE

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VIEW-XX'

ELEVATION

FIXING DETAIL OF ENCLOSURE FLANGE

DETAIL-`A'

FOR INDOOR

BUSDUCT DIVISION

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VIEW-XX'

ELEVATION

FIXING DETAIL OF ENCLOSURE FLANGE

DETAIL-`A'

FOR OUTDOOR

BUSDUCT DIVISION

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L

E

FT

SI

D

E VIEW

E

L

EVA

T

ION

2 G R A DE Q T Y. MA T E R IAL S L . N O. D E S C R IP TION

L

E

FT

SI

D

E VIEW

B IL L O F MA T E R IA LS G A U T A M B U D H N A G A R (U .P .) B U S D U C T D IV IS ION B -1 , S IT E -IV , S U R A J P U R IN D L . A R E A , K A S N A R O A D , G R EA T E R N OI DA S H . N O . 0 8 O F 10 R EV. A P P D. R E V . N O. D ES CR IP T ION

e

l

e

c

t

r i

c

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DETAIL-`A' DETAIL-`Z' ELEVATION

PLAN

SIDE VIEW

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GAUTAM BUDH NAGAR (UP) BUSDUCT DIVISION