GA drgs

DESIGN CALCULATION

JINDAL INDIA POWER LIMITED RATING :- 415V, 2700A NSPB

C&S Electric Ltd.

B-1, SITE-IV, SURAJPUR INDL. AREA, KASNA ROAD, GREATER NOIDA GAUTAM BUDH NAGAR (UP) BUSDUCT DIVISION

CUSTOMER PO. NO. PROJECT TITLE BP PREPARED BY.

M/S KIRLOSKAR BROTHERS LIMITED LOI No. PROJ/PUR/BUSDUCT/JINDAL/49 dt.31.5.11 JINDAL INDIA POWER LTD DESIGN CALCULATION FOR 415V, 2700A NSPB. SK KJ 10.08.11 DOC.NO. C-1230-0811-14846 CHECKED BY. APPROVED. BY. DATE REV. 00 SHEET. NO. 1 OF 3

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. :Design calculation for Non Segregated Phase Busduct (415V) 2700A SL No.

Description

Legends

Table- 1

Data

Data

Unit

REMARKS

2700A

1 Enclosure Width

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

=

Al Alloy

4 Enclosure Material 5 Design Ambient Temp 6 Maximum allowable Temp. for Busbar

Tamb Talo

= =

7 Busbar configration (Conventional / interleved)

Ref STD Drawings

50

0

Ref Technical data Sheet

40

0

C

Ref Technical data Sheet

C

Interleaved

= 8 Short Circuit Current (rms) Symmetrical for each Ibusbar SC

50

KA

Ref Technical data Sheet

ISCP

=

105.0

KA

Ref Technical data Sheet

10 Duration of Fault

T

=

1

11 Phase spacing

S

=

115

12 Initial Temperature of busbar

θ1

=

90

0

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 Width of busbar

W BB

=

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

20 Rating of Busduct required

IReq

=

2700

Amp

Ref Technical data Sheet

IOA

=

4240

Amp

Ref Indal book

9 Peak Short circuit Current

Open Air rating of busbar for 500 Rise over 21 400 ambient in still but unconfined air for Table- 2

Seconds Ref Technical data Sheet mm C

Ref STD Drawings

Sq. mm For Flat Edge

SHORT TIME THERMAL WITHSTAND CAPABILITY OF BUSBAR

A

I

Min. Cross Section Area of Conductor

Amin

II Actual cross sectional Area of Busbar III

4 = ISCeTIo2.17x10 e{log10[(θ2+258)/(θ1+258)]}p

=

5.544

Sq. cm

=

554.4

Sq. mm

=

2905

Sq. mm Ref. Table No. 1 sl. No. 19

Hence the busbar size chosen is safe for Short time rating

Yes

Refer :- Aluminum Busbar Handbook (Indal) SUPPORT INSULATOR SPAN CALCULATION UNDER SHORT CIRCUIT

B I

Peak electromagnetic force along the center line of Busbar without Enclosure

FM

= Mx2.05x(ISCP)2x10-8xdxk/S

Where Multiplying Factor

M

=

0.866

ISCP

=

52.5

Steady state Factor

d

=

0.375

Shape correction Factor

k

=

0.88

FM

=

140.41

II ISCP for Interleaved Busbar

Therefore

(Refer NGK Insulator Catalogue)

KA

Kg/m

Page 2 of 3

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. :Design calculation for Non Segregated Phase Busduct (415V) 2700A SL No.

Description

Legends

Data

Data

= FMXL2x100/10xZ

Unit

III Limiting the Max Fiber stress of Al Busbar

FS

IV Maximum Allowable Insulator Span

L

= eo(FSx10xZ) / (FMx100)p

Limiting the Max Fiber stress of Al Busbar

FS

=

1056

Section Modulus

Z

=

2.31

CM3

Therefore

L

=

1.32

m

LA

=

1.00

m

V Average span adopted VI Hence adapted insulator span is Safe

REMARKS

Kg/m

Kg/cm2 AL BUSBAR HAND BOOK

REF TABLE-1

Yes

BUSBAR SELECTION FOR CONTINUOUS CURRENT RATING

C

(Temperature Rise Calculation) I

Derating / Uprating Factor

a Temperature Rise Correction factor

a

=

0.880

=

2.658

=

0.809

=

12.067

c

=

1.00

d Painting Factor

d

=

1.2

e Enclosure material factor (for Al=1, MS=0.85)

e

=

1

CSA of Busbar / Total CSA of Enclosure b Enclosure Correction Factor

b

For dig C over dig C Ambient % Ref Indal Al Busbar Handbook

Phase Spacing / busbar width Cross-Sectional Area of Busbar / Total CrossSectional Area of Enclosure c

Proximity Effect factor Phase Spacing / Busbar Thk.

II Combined correction Factor Therefore

Ref Indal Al Busbar Handbook

12.00 Ref Indal Al Busbar Handbook

Fc = =

axbxcxdxe

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

VI Hence busbar size chosen is adequate

0

C

Yes

Page 3 of 3

C&S ELECTRIC. Ltd. 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

TECHNICAL DATA SHEET SL. NO.

DESCRIPTION

415V, 2700A

1.0

GENERAL-BUSDUCT

1.1

Manufacture of Busduct

1.2

Service

1.3

Cooling System

Air Natural

1.4

Type of Busduct

Non-Segregated Phase

1.5

System Nominal Voltage

415V

1.6

Rated Voltage Class

1.1KV

1.7

Continuous Current Rating

2700A

1.8

Frequency

50 Hz

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.)

C&S ELECTRIC Ltd. Indoor/Outdoor

IS: 8623 Triple Pole & Neutral 50 KA (rms) 105 KA (peak)

a) Busbar

40°C

b) Enclosure

20°C

1.14

Average Weight of Busduct per meter (Approx)

1.15

Degree of Protection

1.16

1 Minute Dry Power Frequency withstand voltage

2.0

BUSBAR / CONDUCTOR

2.1

Material/Grade

2.2

Shape

2.3

Size (mm) per Phase

95 Kgs. IP - 55 2.5 KV (rms)

AL. ALLOY. GR-63401 WP Rectangular Bar 2700A-2-152.4X9.53/PH & 1-152.4X9.53/N

C&S ELECTRIC. Ltd. 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 3 OF 5 REV - 00

TECHNICAL DATA SHEET SL. NO.

DESCRIPTION

415V, 2700A

2.4

Cross Sectional Area of busbar

2.5

Configuration

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

ENCLOSURE

3.1

Material

3.3

Shape

3.4

Size of Enclosure (mm)

850 x 450

3.5

Thickness of Enclosure

3 mm

3.6

Painting

2700A = 2905 SQ.mm/PH & 1452 SQ.mm/N 2700A = R Y B N R Y B (Interleaved Arrgt.) Matt Black HTS electro zinc passivated M12 Bolt + 1N + 2PW + 1SW 5.5 Kg - mtr.

Aluminium Outdoor slopping top/ indoor without Sloping Top

a) Interior

Matt Black

b) Exterior

RAL-7032

3.7

Material of Gasket

3.8

Flange joint Hardware Material

3.9

Flange Joint Hardware Size

4.0

ACCESS DOOR / INSPECTION COVER

4.1

Material

4.2

Size

4.3

Thickness

4.4

Location / Position

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

Aluminium As per requirement 3mm Top / Bottom

C&S ELECTRIC. Ltd. 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 4 OF 5 REV - 00

TECHNICAL DATA SHEET SL. NO.

DESCRIPTION

4.5

Type of Flange Joints

4.6

Cover joint Hardware Material

4.7

Cover Joint Hardware Size

5.0

SUPPORTING INSULATOR

5.1

Type

5.2

Material

5.3

Voltage Class

415V, 2700A With EPDM Gasket MS electro zinc passivated M8x35+N+2PW+1SW

Indoor/Outdoor SMC

a) Nominal Voltage

415 V

b) Highest Voltage

650 V

5.4

Number of Support per Location

Two

5.5

Average Span

1m

5.6

Size of SMC SUPPORT

70x70

5.7

Minimum Creepage Distance

25 mm

6.0

SEAL OFF PLATE

6.1

Type

6.2

Material

6.3

Voltage Class

INDOOR FRP

a) Nominal Voltage

415 V

b) Highest Voltage

650 V

6.4

Minimum Creepage Distance

6.5

Weight per Sealing Plate (Appx.)

25 mm 6 Kg

C&S ELECTRIC. Ltd. 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 5 OF 5 REV - 00

TECHNICAL DATA SHEET SL. NO.

DESCRIPTION

415V, 2700A

7.0

MINIMUM CLEARANCE

7.1

Phase to Phase

25.4mm

7.2

Phase to Earth

25 mm

8.0

GROUNDING CONDUCTOR

8.1

Material/Grade

8.2

Shape

8.3

Size

9.0

Space Heater

9.1

Type

Indoor

9.2

Power

60 W

9.3

Voltage

240 V

9.4

Phase

Single

9.5

Thermostat

9.6

Degree of Protection For Marshalling Box

BP PREPARED BY

AL. ALLOY. GR-63401 WP Flat 50x10

30-110°C

SK CHECKED BY

IP-55

KJ APPROVED BY

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

CUSTOMER

MANUFACTURER electric

PROJECT: TITLE:

P.O No

M/S KIRLOSKAR BROTHERS LIMITED B-1, SITE-IV, SURAJPUR INDL. AREA, KASNA ROAD, GREATER NOIDA GAUTAM BUDH NAGAR (UP) BUSDUCT DIVISION

JINDAL INDIA POWER LTD GENERAL ARRANGEMENT OF 415V, 2700A, TPN, NSPB LOI No. PROJ/PUR/BUSDUCT/JINDAL/49 dt.31.5.11

GENERAL ARRANGEMENT OF 415V, 2700A, TPN, NSPB SL./NO.

DRG. NUMBER

SHEET NOS.

REV. NO.

DRAWING. TITLE

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

electric

GAUTAM BUDH NAGAR (UP) BUSDUCT DIVISION

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

ITEM No.

NAME OF ITEM

DESCRIPTION

GRADE/TYPE

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

electric

GAUTAM BUDH NAGAR (UP) BUSDUCT DIVISION

MATL.

PLAN

~~~~

ELEVATION

~~~~~~~~ ITEM No.

NAME OF ITEM

DESCRIPTION

MATL.

GENERAL NOTES:-

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

electric

GAUTAM BUDH NAGAR (UP) BUSDUCT DIVISION

QTY.

CROSS - SECTIONAL VIEW OF ENCLOSURE

DETAIL-`X' (TYP.)

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

electric

GAUTAM BUDH NAGAR (UP) BUSDUCT DIVISION

DETAIL-`A' ELEVATION

VIEW-XX' FIXING DETAIL OF ENCLOSURE FLANGE FOR INDOOR

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

electric

GAUTAM BUDH NAGAR (UP) BUSDUCT DIVISION

DETAIL-`A' ELEVATION

VIEW-XX' FIXING DETAIL OF ENCLOSURE FLANGE FOR OUTDOOR

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

electric

GAUTAM BUDH NAGAR (UP) BUSDUCT DIVISION

SL. NO.

REV. NO.

BILL OF MATERIALS DESCRIPTION

QTY.

DESCRIPTION

GRADE

LEFT SIDE VIEW

MATERIAL

APPD.

electric

ELEVATION

2

SH. NO. 08 OF 10

B-1, SITE-IV, SURAJPUR INDL. AREA, KASNA ROAD, GREATER NOIDA GAUTAM BUDH NAGAR (U.P.) BUSDUCT DIVISION

REV.

PLAN

SIDE VIEW

ELEVATION

DETAIL-`Z'

DETAIL-`A'

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

electric

GAUTAM BUDH NAGAR (UP) BUSDUCT DIVISION

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

electric

GAUTAM BUDH NAGAR (UP) BUSDUCT DIVISION