Battery Sizing Sheet

7

ANNEXURE - IV (CELL CAPACITY RATING FACTOR CALCULATION SHEET)

Cell Type: KPL970P Amco make End Cell Voltage 1.14V/Cell

Cell Ah Capacity

Discharge Time t1 Time t2 (1) (2) factor Kt1 for factor Kt2 for Time from data from data Amperes Amperes time t1 = Ah time t2 = Ah (min) (min) (min) for time t1 for time capacity÷(1) capacity÷(2) (A) t2 (A) 1 1 0 1229 0.79 0.00 2 1 5 1229 947 0.79 1.02 4 1 5 1229 947 0.79 1.02 5 5 0 947 1.02 0.00 24 5 30 947 862 1.02 1.13 25 5 30 947 862 1.02 1.13 29 5 30 947 610 1.02 1.59 30 30 0 610 1.59 0.00 45 30 60 610 494 1.59 1.96 44 30 60 610 494 1.59 1.96 54 30 60 610 494 1.59 1.96 58 30 60 610 494 1.59 1.96 59 30 60 610 494 1.59 1.96 60 60 0 494 1.96 0.00 90 90 0 421 2.30 0.00 120 120 0 368 2.64 0.00 450 300 480 183 117 5.30 8.29 475 300 480 183 117 5.30 8.29 479 300 480 183 117 5.30 8.29 480 480 0 117 8.29 0.00 510 480 600 117 94.7 8.29 10.24 530 480 600 117 94.7 8.29 10.24 538 480 600 117 94.7 8.29 10.24 539 480 600 117 94.7 8.29 10.24 540 480 600 117 94.7 8.29 10.24 554 480 600 117 94.7 8.29 10.24 555 480 600 117 94.7 8.29 10.24 569 480 600 117 94.7 8.29 10.24 570 480 600 117 94.7 8.29 10.24 575 480 600 117 94.7 8.29 10.24 594 480 600 117 94.7 8.29 10.24 595 480 600 117 94.7 8.29 10.24 598 480 600 117 94.7 8.29 10.24 599 480 600 117 94.7 8.29 10.24 600 600 0 94.7 10.24 0.00

970 Factor Kt for time t

Note:

1. Kt is the interpolation of kt1 & kt2 as stipulated in IEEE Std 1115-2000, Annex A i.e.

Kt

=

Kt2

-

(Kt2 - Kt1) x (t2 - t) (t2 - t1)

0.79 0.85 0.97 1.02 1.10 1.11 1.57 1.59 1.78 1.76 1.89 1.94 1.95 1.96 2.30 2.64 7.79 8.21 8.27 8.29 8.78 9.10 9.23 9.25 9.27 9.49 9.51 9.74 9.75 9.84 10.15 10.16 10.21 10.23 10.24

2. For discharge data refer Annexure - V 'Cell Performance Data" as given by battery manufacturer.

Basic Data : Lowest Electrolytic Temperature = 18˚C Minimum end Cell Voltage = 1.13V End Cell Voltage during Equalisation Charging = 1.42V Minimum System Voltage, Umin = 193V Maximum System Voltage, Umax = 242V Number of cell per battery bank = 171 (refer clause 4.3.1) (1) Period

(2) Load (ampere)

(3) Change in load (ampere)

(4) (5) (6) (7) (8) Duration of Time to end of Capacity Temperature Required Section Size Period (minute) Section rating factor for Derating Factor for (3) x (6) x (7) = Rated Amp (minute) t Min Rate (Kt) t Min (Tt) hour

Section 1 - First Period Only 1 307

307

1

1

Section 2 - Period-1 & 2 1 307 2 247

307 -60

1 29

Section 3 - Period-1, 2 & 3 1 307 2 247 3 56

307 -60 -191

Random Equipment Load 1 0

0

Maximum Section Size Ah Random Load Size Ah Design margin Uncorrected size in Ah

= = = =

668 0 1.05 668

Aging Factor

=

1.25

Required Capacity in Ah =

876

0.79 Sec-1 Total

1

242 242

-

30 29

1.59 1.57 Sec-2 Sub Total Total

1 1

488 488 394

-94 -94

1 29 570

600 599 570

10.24 10.23 9.75 Sec-3 Sub Total Total

1 1 1

3145 3145 668

-614 -1863 -2477

0

0

0.00

1 -

-

Temperature

KBL

1 Sec.

5 Sec.

30 Sec

1 Min.

5 Min.

10 Min. 15 Min. 20 Min. 30 Min.

1 Hr.

1.5 Hrs.

15 deg.C

0.940

0.941

0.943

0.950

0.950

0.950

0.950

0.950

0.952

0.960

0.970

12 deg.C

0.840

0.839

0.838

0.842

0.847

0.867

0.872

0.875

0.882

0.902

0.920

10 deg.C

0.880

0.880

0.880

0.885

0.888

0.900

0.903

0.905

0.910

0.925

0.940

5 deg.C

0.815

0.816

0.820

0.828

0.833

0.835

0.839

0.843

0.850

0.868

0.885

0 deg.C

0.752

0.752

0.760

0.762

0.765

0.775

0.781

0.787

0.800

0.820

0.830

-5 deg.C

0.680

0.681

0.686

0.700

0.700

0.705

0.709

0.713

0.725

0.752

0.765

-10 deg.C

0.630

0.630

0.630

0.630

0.630

0.640

0.643

0.645

0.650

0.680

0.700

2 Hrs.

3 Hrs.

4 Hrs.

5 Hrs.

6 Hrs.

7 Hrs.

8 Hrs.

9 Hrs.

10 Hrs.

0.980

0.990

0.995

0.995

1.000

1.000

1.000

1.000

1.000

0.930

0.940

0.953

0.953

0.958

0.958

0.958

0.958

0.958

0.950

0.960

0.970

0.970

0.975

0.975

0.975

0.975

0.975

0.900

0.915

0.925

0.930

0.938

0.938

0.938

0.938

0.938

0.850

0.870

0.880

0.893

0.900

0.900

0.900

0.900

0.900

0.788

0.815

0.830

0.847

0.850

0.850

0.850

0.855

0.860

0.725

0.760

0.780

0.800

0.800

0.800

0.800

0.810

0.820

7

ANNEXURE - IV (CELL CAPACITY RATING FACTOR CALCULATION SHEET)

Cell Type: KPL970P Amco make

Cell Ah Capacity

Discharge Time t1 Time t2 (1) (2) factor Kt1 for factor Kt2 for Time from data from data Amperes Amperes time t1 = Ah time t2 = Ah (min) (min) (min) for time t1 for time capacity÷(1) capacity÷(2) (A) t2 (A) 1 1 1546 0.79 2 1 5 1546 1191 0.79 1.02 4 1 5 1546 1191 0.79 1.02 5 5 1191 1.02 24 5 30 1191 768 1.02 1.13 29 5 30 1191 768 1.02 1.59 30 30 768 1.59 54 30 60 768 622 1.59 1.96 58 30 60 768 622 1.59 1.96 59 30 60 768 622 1.59 1.96 60 60 622 1.96 90 90 530 2.30 120 120 463 2.64 450 300 480 230 147 5.30 8.29 475 300 480 230 147 5.30 8.29 479 300 480 230 147 5.30 8.29 480 480 147 8.29 0.00 510 480 600 147 119 8.29 10.24 530 480 600 147 119 8.29 10.24 538 480 600 147 119 8.29 10.24 539 480 600 147 119 8.29 10.24 540 480 600 147 119 8.29 10.24 554 480 600 147 119 8.29 10.24 569 480 600 147 119 8.29 10.24 575 480 600 147 119 8.29 10.24 594 480 600 147 119 8.29 10.24 595 480 600 147 119 8.29 10.24 598 480 600 147 119 8.29 10.24 599 480 600 147 119 8.29 10.24 600 600 119 10.24 -

970 Factor Kt for time t

0.79 0.85 0.97 1.02 1.10 1.57 1.59 1.89 1.94 1.95 1.96 2.30 2.64 7.79 8.21 8.27 8.29 8.78 9.10 9.23 9.25 9.27 9.49 9.74 9.84 10.15 10.16 10.21 10.23 10.24

Note:

1. Kt is the interpolation of Kt1 & Kt2 as stipulated in IEEE Std 1115-2000, Annex A i.e.

Kt

=

Kt2

-

(Kt2 - Kt1) x (t2 - t) (t2 - t1)

2. For discharge data refer Annexure - V "Cell Performance Data" as given by battery manufacturer.