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Catalogue cấu tạo chi tiết sử dụng ác quy SC 8d 250a AT 1

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SC8D-250A-AT
Advanced AGM Dry Cell Technology
Vision EV Series Dry Cell Batteries provide superior performance, capacities and reliability. Using
state of art dry cell technology the EV series is designed for environmentally sensitive areas that
require enhanced cycle life capabilities in commercial, industrial, residential, and private
applications. The maintenance-free (VRLA) construction and advanced design features makes
the EV Series the definitive choice for a wide variety of markets; Solar and Renewable Energy
Storage; Electric Vehicle and Golf cart; Industrial equipment, Floor Machines, Fork lifts, Aerial lifts,
and Robotics; Marine, RV, and no-idle solutions; Mobility and Medical Equipment; Telecom,
Broadband and Cable TV; UPS systems.

Features & Benefits

Vision EV Series



Completely sealed valve regulated construction.



Flame arresting pressure regulated safety sealing valves for safety, operating pressure management and
protection against atmospheric contamination (excess oxygen being absorbed by negative plates).



Computer-aided 99.994% pure heavy-duty lead calcium grid designs.



Tank formed plates guarantees evenly formed and capacity matched plates.





Anchored plate groups to guard against vibration.



Double insulating Micro porous glass fiber separators.



Measured and Immobilized electrolyte.



Vacuum filling and weighing processes.



Advanced technology for efficient gas recombination of up to 99.9% and freedom from electrolyte maintenance.



Wide range of operating temperatures (-40°C to 60°C).



Low self discharge rates (Approx. 1%-3% monthly at 20 °C–25°C / 68°F–77°F).




High impact reinforced strength copolymer polypropylene cases and flat top designed covers that are
rugged and vibration resistant.



Thermally welded case to cover bonds that eliminate leakage.



Copper and stainless steel alloy terminals and hardware.



Multi-terminal options.



Terminal protectors.



Removable carry handles.



Industry leading size and performance options.




Classified as “NON-SPILLABLE BATTERY” Not restricted for Air (IATA/ICAO) Provision 67, Surface
(DOT-CFR-HMR49)or Water (Classified as non-hazardous per IMDG amendment 27) transportation.



Can be used in multiple orientations (upside down is not recommended).



Compatible with sensitive electronic equipment.



Quality Assurance processes with ISO (4400/992579), QS and TUV Certification EMC tested, CE, ETTS
Germany (G4M19906-9202-E-16). UL recognized and approved components (MH25860).



Tellcordia and Bellcore compliant.

ISO 14001
DIN ISO
9001/QS9000

MH25860

Complies with DOT provisions
listed in 49CRF173.159 (d).
Special provision A67


www.vision-batt.com
page 1 of 4


SC8D-250A-AT
Mechanical Characteristics

L

W

H

TH

Weight in

Terminals

in(mm)

in(mm)

in(mm)

in(mm)

Lbs (Kgs)

AT


20.8 (528)

11.1 (282)

9.0 (229)

9.8 (250)

157 (71)

12

528±2
500±2

229±2
250±2

8D

Approx.

(optional)

POS

NEG

282±2

280±2
17.9

19.5

M3/8"

17

Type No.

Dimensions in Inches (mm)

Standard
Volts

40

Industry

SAE

Stud

www.vision-batt.com
page 2 of 4


SC8D-250A-AT
Electrical Specifications

Ampere Hour Capacity
100HR

10HR

R/C

Minutes of Discharge

5HR

@25A 32°F/ 0°C 0°F/ -18°C

@75A

@25A

Cranking Amps

* - Performance averages after 15 cycles
244

210

199

548

120


510

1825

1400

Constant current discharge ratings-amperes at 20℃(68℉)
End Point

5min

10min

15min

30min

45min

1h

3h

5h

10h

100h

1.60V


580

440

356

218

163

133

61

41.3

21.8

2.53

1.65V

536

413

337

210


158

129

59.9

40.8

21.6

2.50

1.70V

490

387

316

202

153

125

58.8

40.3


21.3

2.47

1.75V

444

359

295

193

147

121

57.7

39.8

21.0

2.44

1.80V

399


332

275

184

141

117

56.6

39.3

20.8

2.41

Volts/Cell

Constant power discharge ratings-watts per cell at 20℃(68℉)
End Point

5min

10min

15min


30min

45min

1h

2h

3h

5h

1.60V

1035

814

668

410

308

246

139

101


67.0

1.65V

969

769

632

397

300

241

137

100

66.0

1.70V

903

724

596


384

292

236

135

99.0

65.0

1.75V

836

678

560

370

284

231

133

98.0


64.0

1.80V

769

632

524

356

275

225

131

96.0

64.0

Volts/Cell

Internal resistance

Fully charged at 20℃: 2.7 mOhms

Self discharge


<3% of capacity per month at 20℃

Operating temperature range

Discharge

Charge

Storage

-20~60℃

-10~60℃

-20~60℃

4500A

Short circuit current (20℃)

CHARGE METHODS: Constant voltage charging at 20℃(68℉)

Standby use
Cyclic use

Max. Charge current
0.3C10A
0.3C10A

Charge voltage

13.6--13.8V
14.4--14.7V

Temperature compensation
-20mV/℃
-30mV/℃

www.vision-batt.com
page 3 of 4


SC8D-250A-AT
Voltage

Current

Charged
Volume

Charge / Discharge Tables & Graphs
Cycle service life in relation to
depth of discharge

Charge characteristic curve
120

Constant voltage charge characteristic
(0.25CA,20 oC)

(%) (XCA) (V)


100

120

0.25

100

0.20

80

0.15

60
0.10

40
20

0.05

0

0

15.0

CHARGED VOLUME


14.0

CHARGE VOLTAGE

Capacity(%)

140

80
60

80% D.O.D. 50%D.O.D.

12.0

20

11.0

CHARGING CURRENT

0
400

0

2

4


6

8

10

12

14

16

18

800

20

110

13

100

12.5
12

11


50
50

60

70

80

90

100

40

Relative state of charge (%)

40 oC

0

2

Relationship between
charging voltage and temperature
(V/12V)

(V/8V)

(V/6V)


(V/4V)

(V/CELL)

15.6

10.4

7.8

5.2

2.6

80

15.0

10.0

7.5

5.0

2.5

14.4

9.6


7.2

4.8

2.4

9.2

6.9

4.6

2.3

8.8

6.6

4.4

2.2

4

6

8

20 oC


10

12
14
16
18
20
Storage time: months

CY

CL

ND B

EU
S

Capacity (%)

100

STA

13.2

30 oC

Temperature effects on capacity

120

13.8

2800

70
60

40

2400

80

11.5

30

2000

90

Capacity(%)

Battery voltage(V)

13.5

20


1600

Self-discharge characteristic

Relationship of OCV and state of charge (20OC)

10

1200

Number of cycles(cycles)

Charging time (hours)

0

20%D.O.D.

40

13.0

E

0 .1 C
0 .2 C

60
1 .0 C


40

2 .0 C

Y US
E

20
0
-10

0

10
20
30
40
Ambient temperature(oC)

50

THE INTERNATIONAL CERTIFICATION NETWORK

ISO9001:2000

MH25860

-20


60

-10

0
10
20
Temperature(oC)

30

40

G4M19906-9202-E-16

www.vision-batt.com

Shenzhen Center Power Tech. Co., Ltd.
Center Power Industrial Park, Tongfu Industrial District Dapeng Town, 518120 Shenzhen, China
Tel: (+86-755) 8431 8088 Fax: (+86-755) 8431 8038 E-mail:

page 4 of 4

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