14
CTA Front Terminal Type Series Product Guide
RM 1801, 18/F, Cangsong Bldg., Terra 6 Rd, Chegongmiao, Futian District, Shenzhen 518040 China
Tel: 86 755 8343 5688 Fax: 86 755 8384 9585
E-mail: [email protected]
Website: http://www.vision-batt.com
(Edition June 2004)
CTA Front Terminal Type
Series
Product Guide
On
e o
f th
e l
arg
est
Seale
d L
ead A
cid
Batt
ery
man
ufa
ctu
rers
in t
he w
orl
d
21
IntroductionContents
The new ST CTA series of VRLA
batteries has been specially designed for
use in telecom systems. With proven
compliance to the most rigorous
international standards, such as IEC896-
2, BS6290-4, Eurobat Guide, ST CTA
series batteries are recognized as the
best ones for telecom applications. With
front access terminals, it's easy for
installing and taking voltage readings
during service. The battery container and
cover made from V0 class flame retardant
ABS & with thick walls, offer the battery
with high mechanical strength and safety
service features.
ST CTA delivers high performance
while occupying less space than
conventional battery series. ST has
more than 15 year's experience in the
manufacturing of VRLA batteries.
This product guide covers the ST
CTA Front Terminal series and is designed
to help users select the appropriate
battery for particular applications.
Technical information includes detailed
discharge performance data for each unit
and advice on calculating the correct
battery size.
The new ST CTA Front Terminal
range of valve regulated lead acid
batteries has been designed specifically
for use in applications where demand
the highest levels of security and
reliability. With proven compliance to
international standards, ST CTA is
recognized as one of the best battery
series for Telecom/IT applications.
The adoption of gas recombination
technology enables lead acid batteries
be manufactured in sealed design and
maintenance-free. This Technology
provides the user with the freedom to
use lead acid batteries in a wide range of
applications and batteries can be
installed in any locations.
The ST CTA Front Terminal batteries
are suitable for 19', 23', and ETSI
racking, give users the benefit of
increased energy density. With all
electrical connections at the front,
installation and inspection are simple
quicker.
www.vision-batt.com
Features and benefits StandardsIEC896-2
BS6290-4
Eurobat Guide
IEC 707 FV0
DOT 167
1. High conductivity connectors and terminal
Strong stainless steal stud terminals providing high conductivity and
power. The front access terminals make installation very convenient.
2. High reliability terminal sealing
VISION's unique construction and sealing technique guarantee that no
electrolyte leakage can occur.
3. Self-regulating relief valve
Low-pressure non-return valve prevents ingress of oxygen in the
atmosphere.
4. Thick positive plates
Scientific grids designed to resist corrosion and increase battery
service life.
5. Balanced negative plates
Ensure optimum recombination efficiency.
6. Tough & V0 flame retardant battery container and cover ensure
safety operation of battery.
7. Separators
Low resistance microporous glassfibre. The electrolyte is absorbed
within this material.
8. Lifting handles
All the batteries in the range are provided with molded lifting handles
or rope handles
A gas collect System has been designed
to collect and disperse gas evolved during
normal battery operation where required.
Construction
Unit:mm
Introduction 1
Features and benefitsStandards Construction 2
Range Summary Position of terminals 3
Performance Data 4-7
Selection of Battery Size 8
Technology 9
Operating Characteristics 10
Operating Instructions andGuidelines 11
Installation and CommissioningCharge 12
Battery Storage 13
Battery Accommodation 14
Thick pasted plates with high quality lead-tin-calcium alloy grids for long service life;
Centralized venting system for gas ventilation;
Plastics or rope handles for handling and installation convenience;
Design life 12+ years;
Easy installation
Robust stainless steal stud terminals providing high conductivity, easy connection;
Front access terminals for easy and quick connection
VISION Rechargeable Products
Sealed Lead Acid Battery
21
IntroductionContents
The new VISION CTA series of VRLA
batteries has been specially designed for
use in telecom systems. With proven
compliance to the most rigorous
international standards, such as IEC896-
2, BS6290-4, Eurobat Guide, VISION CTA
series batteries are recognized as the
best ones for telecom applications. With
front access terminals, it's easy for
installing and taking voltage readings
during service. The battery container and
cover made from V0 class flame retardant
ABS & with thick walls, offer the battery
with high mechanical strength and safety
service features.
VISION CTA delivers high performance
while occupying less space than
conventional battery series.
Shenzhen Center power tech co., ltd has
more than 15 year's experience in the
manufacturing of VRLA batteries.
This product guide covers the VISION
CTA Front Terminal series and is designed
to help users select the appropriate
battery for particular applications.
Technical information includes detailed
discharge performance data for each unit
and advice on calculating the correct
battery size.
The new VISION CTA Front Terminal
range of valve regulated lead acid
batteries has been designed specifically
for use in applications where demand
the highest levels of security and
reliability. With proven compliance to
international standards, VISION CTA is
recognized as one of the best battery
series for Telecom/IT applications.
The adoption of gas recombination
technology enables lead acid batteries
be manufactured in sealed design and
maintenance-free. This Technology
provides the user with the freedom to
use lead acid batteries in a wide range of
applications and batteries can be
installed in any locations.
The VISION CTA Front Terminal batteries
are suitable for 19', 23', and ETSI
racking, give users the benefit of
increased energy density. With all
electrical connections at the front,
installation and inspection are simple
quicker.
Features and benefits StandardsIEC896-2
BS6290-4
Eurobat Guide
IEC 707 FV0
DOT 167
1. High conductivity connectors and terminal
Strong stainless steal stud terminals providing high conductivity and
power. The front access terminals make installation very convenient.
2. High reliability terminal sealing
ST's unique construction and sealing technique guarantee that no
electrolyte leakage can occur.
3. Self-regulating relief valve
Low-pressure non-return valve prevents ingress of oxygen in the
atmosphere.
4. Thick positive plates
Scientific grids designed to resist corrosion and increase battery
service life.
5. Balanced negative plates
Ensure optimum recombination efficiency.
6. Tough & V0 flame retardant battery container and cover ensure
safety operation of battery.
7. Separators
Low resistance microporous glassfibre. The electrolyte is absorbed
within this material.
8. Lifting handles
All the batteries in the range are provided with molded lifting handles
or rope handles
A gas collect System has been designed
to collect and disperse gas evolved during
normal battery operation where required.
Construction
Unit:mm
Introduction 1
Features and benefitsStandards Construction 2
Range Summary Position of terminals 3
Performance Data 4-7
Selection of Battery Size 8
Technology 9
Operating Characteristics 10
Operating Instructions andGuidelines 11
Installation and CommissioningCharge 12
Battery Storage 13
Battery Accommodation 14
Thick pasted plates with high quality lead-tin-calcium alloy grids for long service life;
Centralized venting system for gas ventilation;
Plastics or rope handles for handling and installation convenience;
Design life 12+ years;
Easy installation
Robust stainless steal stud terminals providing high conductivity, easy connection;
Front access terminals for easy and quick connection
ST Rechargeable ProductsSealed Lead Acid Battery
3 4
CTA12-50X CTA12-80XCTA12-75X
CTA12-85X CTA12-100X CTA12-155XCTA12-125X
CTA12-50X 12 50 279 11.0 105 4.13 280 11.0 280 11.0 M8 20.0 44.1
CTA12-75X 12 75 563 22.2 115 4.53 188 7.40 188 7.40 M8 28.5 62.8
CTA12-80X 12 80 508 20.0 110 4.33 231 9.09 231 9.09 M8 31.0 68.4
CTA12-85X 12 85 393 15.5 125 4.92 256 10.1 256 10.1 M8 32.0 70.6
CTA12-100X 12 100 558 22.0 125 4.92 228 8.98 228 8.98 M8 40.0 88.2
CTA12-125X 12 125 561 22.1 105 4.13 316 12.4 316 12.4 M8 49.5 109
CTA12-155X 12 155 546 21.5 125 4.92 315 12.4 315 12.4 M8 59.0 130
TYPE NominalVoltage(V)
Capacity StudTerminal
Wt.(lbs)oto 1.8V@10hr,20 C
L(mm) L(inch) W(mm) H(mm) W(inch) H(inch) TH(mm) TH(inch) Wt.(Kg)
Range Summary
Position of terminalsP
erf
orm
an
ce
Da
taA
mp
ere
s C
on
sta
nt
Cu
rre
nt
Dis
ch
arg
e p
erf
orm
an
ce
Co
nst
an
t C
urr
en
t D
isch
arg
e (
Am
pe
res
) a
t 2
0C to
1.7
0 v
olts
pe
r ce
llo
Ba
tte
ry T
yp
e 1
0m
in
15
min
2
0m
in 2
5m
in 3
0m
in 3
5m
in 4
0m
in 4
5m
in 5
0m
in 5
5m
in 1
h 1
.5h
2
h 2
.5h
3
h 4
h 5
h 6
h 7
h 8
h 9
h 1
0h
1
2h
2
4h
Co
nst
an
t C
urr
en
t D
isch
arg
e (
Am
pe
res
) a
t 2
0C to
1.6
5 v
olts
pe
r ce
llo
Ba
tte
ry T
yp
e 1
0m
in
15
min
2
0m
in 2
5m
in 3
0m
in 3
5m
in 4
0m
in 4
5m
in 5
0m
in 5
5m
in 1
h 1
.5h
2
h 2
.5h
3
h 4
h 5
h 6
h 7
h 8
h 9
h 1
0h
1
2h
2
4h
oC
on
sta
nt C
urr
en
t D
isch
arg
e (
Am
pe
res
) a
t 2
0C to
1.6
0 v
olts
pe
r ce
ll
Ba
tte
ry T
yp
e 1
0m
in
15
min
2
0m
in 2
5m
in 3
0m
in 3
5m
in 4
0m
in 4
5m
in 5
0m
in 5
5m
in 1
h 1
.5h
2
h 2
.5h
3
h 4
h 5
h 6
h 7
h 8
h 9
h 1
0h
1
2h
2
4h
CTA
12
-50
X1
32
10
48
5.7
72
.96
3.2
56
.15
0.6
45
.64
2.0
38
.63
5.8
25
.22
0.0
16
.81
4.7
11.9
10
.08
.46
7.3
36
.48
5.8
25
.30
4.5
72
.38
CTA
12
-75
X1
98
15
51
29
10
99
4.9
84
.27
5.9
68
.46
3.0
58
.05
3.6
37
.82
9.9
25
.12
2.0
17
.81
5.1
12
.711
.09
.73
8.7
47
.94
6.8
63
.57
CTA
12
-80
X2
111
66
13
711
71
01
89
.88
0.9
73
.06
7.2
61
.85
7.2
40
.33
1.9
26
.82
3.4
19
.01
6.1
13
.511
.71
0.4
9.3
28
.47
7.3
13
.81
CTA
12
-85
X2
24
17
61
46
12
41
08
95
.48
6.0
77
.57
1.4
65
.76
0.8
42
.83
3.9
28
.52
4.9
20
.11
7.1
14
.41
2.5
11.0
9.9
09
.00
7.7
74
.05
CTA
12
-10
0X
26
42
07
17
11
46
12
611
21
01
91
.28
4.0
77
.37
1.5
50
.43
9.9
33
.52
9.3
23
.72
0.1
16
.91
4.7
13
.011
.71
0.6
9.1
44
.76
CTA
12
-12
5X
33
02
59
21
41
82
15
81
40
12
611
41
05
96
.68
9.4
63
.04
9.9
41
.93
6.6
29
.62
5.1
21
.21
8.3
16
.21
4.6
13
.211
.45
.95
CTA
12
-15
5X
36
12
88
24
22
13
18
61
64
14
71
38
13
01
22
116
84
.06
4.6
54
.34
7.5
37
.23
1.0
25
.92
2.3
19
.81
7.7
16
.01
4.1
7.4
7
CTA
12
-50
X1
23
96
.08
0.9
68
.96
0.7
53
.34
8.2
43
.43
9.8
37
.23
5.0
24
.71
9.5
16
.41
4.4
11.6
9.8
48
.30
7.2
06
.38
5.7
45
.22
4.5
32
.36
CTA
12
-75
X1
85
14
41
21
10
39
1.0
80
.07
2.3
65
.25
9.7
55
.85
2.5
37
.12
9.3
24
.62
1.5
17
.41
4.8
12
.51
0.8
9.5
78
.60
7.8
46
.79
3.5
4
CTA
12
-80
X1
97
15
31
29
110
97
.18
5.3
77
.16
9.5
63
.75
9.5
56
.03
9.5
31
.22
6.2
23
.01
8.6
15
.71
3.3
11.5
10
.29
.18
8.3
67
.24
3.7
8
CTA
12
-85
X2
09
16
31
38
117
10
39
0.7
81
.97
3.9
67
.76
3.2
59
.54
2.0
33
.22
7.9
24
.41
9.7
16
.71
4.1
12
.21
0.8
9.7
58
.88
7.6
94
.01
CTA
12
-10
0X
24
61
92
16
21
38
12
11
07
96
.48
6.9
79
.67
4.4
70
.04
9.4
39
.03
2.8
28
.72
3.2
19
.71
6.6
14
.41
2.8
11.5
10
.59
.05
4.7
2
CTA
12
-12
5X
30
82
40
20
21
72
15
21
33
12
01
09
99
.59
3.0
87
.56
1.8
48
.84
1.0
35
.92
9.0
24
.62
0.8
18
.01
5.9
14
.31
3.1
11.3
5.9
0
CTA
12
-15
5X
34
02
77
23
02
04
17
71
56
14
31
33
12
61
20
114
82
.26
3.8
53
.84
7.1
36
.93
0.7
25
.72
2.1
19
.61
7.5
15
.81
4.0
7.3
7
CTA
12
-50
X11
39
0.8
76
.96
5.8
58
.05
1.5
46
.34
2.0
39
.13
6.5
34
.32
4.2
19
.11
6.1
14
.011
.39
.62
8.1
37
.06
6.2
75
.65
5.1
54
.47
2.3
4
CTA
12
-75
X1
69
13
611
59
8.6
87
.07
7.3
69
.56
3.0
58
.65
4.7
51
.53
6.2
28
.72
4.1
21
.01
7.0
14
.41
2.2
10
.69
.40
8.4
77
.73
6.7
03
.50
CTA
12
-80
X1
80
14
51
23
10
59
2.8
82
.47
4.1
67
.26
2.5
58
.35
4.9
38
.63
0.6
25
.72
2.4
18
.11
5.4
13
.011
.31
0.0
9.0
38
.24
7.1
53
.74
CTA
12
-85
X1
91
15
41
31
112
98
.68
7.6
78
.87
1.4
66
.46
2.0
58
.34
1.1
32
.52
7.3
23
.81
9.2
16
.31
3.8
12
.01
0.7
9.6
08
.76
7.5
93
.97
CTA
12
-10
0X
22
51
82
15
41
32
116
10
39
2.7
84
.07
8.2
72
.96
8.6
48
.33
8.2
32
.12
8.0
22
.61
9.2
16
.31
4.1
12
.511
.31
0.3
8.9
34
.67
CTA
12
-12
5X
28
12
27
19
21
64
14
51
29
116
10
59
7.7
91
.18
5.8
60
.44
7.8
40
.13
5.0
28
.32
4.0
20
.31
7.7
15
.71
4.1
12
.911
.25
.84
CTA
12
-15
5X
32
12
62
22
21
94
17
01
51
13
91
29
12
111
611
18
0.3
63
.05
3.2
46
.73
6.5
30
.42
5.4
21
.91
9.5
17
.41
5.7
13
.97
.33
3 4
CTA12-50X CTA12-80XCTA12-75X
CTA12-85X CTA12-100X CTA12-155XCTA12-125X
CTA12-50X 12 50 279 11.0 105 4.13 280 11.0 280 11.0 M8 20.0 44.1
CTA12-75X 12 75 563 22.2 115 4.53 188 7.40 188 7.40 M8 28.5 62.8
CTA12-80X 12 80 508 20.0 110 4.33 231 9.09 231 9.09 M8 31.0 68.4
CTA12-85X 12 85 393 15.5 125 4.92 256 10.1 256 10.1 M8 32.0 70.6
CTA12-100X 12 100 558 22.0 125 4.92 228 8.98 228 8.98 M8 40.0 88.2
CTA12-125X 12 125 561 22.1 105 4.13 316 12.4 316 12.4 M8 49.5 109
CTA12-155X 12 155 546 21.5 125 4.92 315 12.4 315 12.4 M8 59.0 130
TYPE NominalVoltage(V)
Capacity StudTerminal
Wt.(lbs)oto 1.8V@10hr,20 C
L(mm) L(inch) W(mm) H(mm) W(inch) H(inch) TH(mm) TH(inch) Wt.(Kg)
Range Summary
Position of terminals
Pe
rfo
rma
nce
Da
taA
mp
ere
s C
on
sta
nt
Cu
rre
nt
Dis
ch
arg
e p
erf
orm
an
ce
Co
nst
an
t C
urr
en
t D
isch
arg
e (
Am
pe
res
) a
t 2
0C to
1.7
0 v
olts
pe
r ce
llo
Ba
tte
ry T
yp
e 1
0m
in
15
min
2
0m
in 2
5m
in 3
0m
in 3
5m
in 4
0m
in 4
5m
in 5
0m
in 5
5m
in 1
h 1
.5h
2
h 2
.5h
3
h 4
h 5
h 6
h 7
h 8
h 9
h 1
0h
1
2h
2
4h
Co
nst
an
t C
urr
en
t D
isch
arg
e (
Am
pe
res
) a
t 2
0C to
1.6
5 v
olts
pe
r ce
llo
Ba
tte
ry T
yp
e 1
0m
in
15
min
2
0m
in 2
5m
in 3
0m
in 3
5m
in 4
0m
in 4
5m
in 5
0m
in 5
5m
in 1
h 1
.5h
2
h 2
.5h
3
h 4
h 5
h 6
h 7
h 8
h 9
h 1
0h
1
2h
2
4h
oC
on
sta
nt C
urr
en
t D
isch
arg
e (
Am
pe
res
) a
t 2
0C to
1.6
0 v
olts
pe
r ce
ll
Ba
tte
ry T
yp
e 1
0m
in
15
min
2
0m
in 2
5m
in 3
0m
in 3
5m
in 4
0m
in 4
5m
in 5
0m
in 5
5m
in 1
h 1
.5h
2
h 2
.5h
3
h 4
h 5
h 6
h 7
h 8
h 9
h 1
0h
1
2h
2
4h
CTA
12
-50
X1
32
10
48
5.7
72
.96
3.2
56
.15
0.6
45
.64
2.0
38
.63
5.8
25
.22
0.0
16
.81
4.7
11.9
10
.08
.46
7.3
36
.48
5.8
25
.30
4.5
72
.38
CTA
12
-75
X1
98
15
51
29
10
99
4.9
84
.27
5.9
68
.46
3.0
58
.05
3.6
37
.82
9.9
25
.12
2.0
17
.81
5.1
12
.711
.09
.73
8.7
47
.94
6.8
63
.57
CTA
12
-80
X2
111
66
13
711
71
01
89
.88
0.9
73
.06
7.2
61
.85
7.2
40
.33
1.9
26
.82
3.4
19
.01
6.1
13
.511
.71
0.4
9.3
28
.47
7.3
13
.81
CTA
12
-85
X2
24
17
61
46
12
41
08
95
.48
6.0
77
.57
1.4
65
.76
0.8
42
.83
3.9
28
.52
4.9
20
.11
7.1
14
.41
2.5
11.0
9.9
09
.00
7.7
74
.05
CTA
12
-10
0X
26
42
07
17
11
46
12
611
21
01
91
.28
4.0
77
.37
1.5
50
.43
9.9
33
.52
9.3
23
.72
0.1
16
.91
4.7
13
.011
.71
0.6
9.1
44
.76
CTA
12
-12
5X
33
02
59
21
41
82
15
81
40
12
611
41
05
96
.68
9.4
63
.04
9.9
41
.93
6.6
29
.62
5.1
21
.21
8.3
16
.21
4.6
13
.211
.45
.95
CTA
12
-15
5X
36
12
88
24
22
13
18
61
64
14
71
38
13
01
22
116
84
.06
4.6
54
.34
7.5
37
.23
1.0
25
.92
2.3
19
.81
7.7
16
.01
4.1
7.4
7
CTA
12
-50
X1
23
96
.08
0.9
68
.96
0.7
53
.34
8.2
43
.43
9.8
37
.23
5.0
24
.71
9.5
16
.41
4.4
11.6
9.8
48
.30
7.2
06
.38
5.7
45
.22
4.5
32
.36
CTA
12
-75
X1
85
14
41
21
10
39
1.0
80
.07
2.3
65
.25
9.7
55
.85
2.5
37
.12
9.3
24
.62
1.5
17
.41
4.8
12
.51
0.8
9.5
78
.60
7.8
46
.79
3.5
4
CTA
12
-80
X1
97
15
31
29
110
97
.18
5.3
77
.16
9.5
63
.75
9.5
56
.03
9.5
31
.22
6.2
23
.01
8.6
15
.71
3.3
11.5
10
.29
.18
8.3
67
.24
3.7
8
CTA
12
-85
X2
09
16
31
38
117
10
39
0.7
81
.97
3.9
67
.76
3.2
59
.54
2.0
33
.22
7.9
24
.41
9.7
16
.71
4.1
12
.21
0.8
9.7
58
.88
7.6
94
.01
CTA
12
-10
0X
24
61
92
16
21
38
12
11
07
96
.48
6.9
79
.67
4.4
70
.04
9.4
39
.03
2.8
28
.72
3.2
19
.71
6.6
14
.41
2.8
11.5
10
.59
.05
4.7
2
CTA
12
-12
5X
30
82
40
20
21
72
15
21
33
12
01
09
99
.59
3.0
87
.56
1.8
48
.84
1.0
35
.92
9.0
24
.62
0.8
18
.01
5.9
14
.31
3.1
11.3
5.9
0
CTA
12
-15
5X
34
02
77
23
02
04
17
71
56
14
31
33
12
61
20
114
82
.26
3.8
53
.84
7.1
36
.93
0.7
25
.72
2.1
19
.61
7.5
15
.81
4.0
7.3
7
CTA
12
-50
X11
39
0.8
76
.96
5.8
58
.05
1.5
46
.34
2.0
39
.13
6.5
34
.32
4.2
19
.11
6.1
14
.011
.39
.62
8.1
37
.06
6.2
75
.65
5.1
54
.47
2.3
4
CTA
12
-75
X1
69
13
611
59
8.6
87
.07
7.3
69
.56
3.0
58
.65
4.7
51
.53
6.2
28
.72
4.1
21
.01
7.0
14
.41
2.2
10
.69
.40
8.4
77
.73
6.7
03
.50
CTA
12
-80
X1
80
14
51
23
10
59
2.8
82
.47
4.1
67
.26
2.5
58
.35
4.9
38
.63
0.6
25
.72
2.4
18
.11
5.4
13
.011
.31
0.0
9.0
38
.24
7.1
53
.74
CTA
12
-85
X1
91
15
41
31
112
98
.68
7.6
78
.87
1.4
66
.46
2.0
58
.34
1.1
32
.52
7.3
23
.81
9.2
16
.31
3.8
12
.01
0.7
9.6
08
.76
7.5
93
.97
CTA
12
-10
0X
22
51
82
15
41
32
116
10
39
2.7
84
.07
8.2
72
.96
8.6
48
.33
8.2
32
.12
8.0
22
.61
9.2
16
.31
4.1
12
.511
.31
0.3
8.9
34
.67
CTA
12
-12
5X
28
12
27
19
21
64
14
51
29
116
10
59
7.7
91
.18
5.8
60
.44
7.8
40
.13
5.0
28
.32
4.0
20
.31
7.7
15
.71
4.1
12
.911
.25
.84
CTA
12
-15
5X
32
12
62
22
21
94
17
01
51
13
91
29
12
111
611
18
0.3
63
.05
3.2
46
.73
6.5
30
.42
5.4
21
.91
9.5
17
.41
5.7
13
.97
.33
65
Pe
rfo
rma
nce
Da
ta W
atts
pe
r ce
ll C
on
sta
nt
Cu
rre
nt
Dis
ch
arg
e p
erf
orm
an
ce
Ba
tte
ry T
yp
e 1
0m
in
15
min
2
0m
in 2
5m
in 3
0m
in 3
5m
in 4
0m
in 4
5m
in 5
0m
in 5
5m
in 1
h 1
.5h
2
h 2
.5h
3
h 4
h 5
h 6
h 7
h 8
h 9
h 1
0h
1
2h
2
4h
Co
nst
an
t P
ow
er
Dis
cha
rge
(
Wa
tts
pe
r ce
ll )
at 2
0C to
1.6
0 v
olts
pe
r ce
llo
CTA
12
-50
X2
28
17
71
48
12
611
19
9.3
90
.68
2.8
76
.77
1.4
66
.54
7.0
37
.13
1.3
27
.52
2.3
19
.21
6.3
14
.01
2.6
11.3
10
.28
.75
4.5
0
CTA
12
-75
X3
42
26
62
22
18
91
67
14
91
36
12
411
51
07
99
.87
0.5
55
.64
7.0
41
.33
3.5
28
.72
4.4
21
.01
8.8
16
.91
5.3
13
.16
.74
CTA
12
-80
X3
65
28
42
37
20
21
78
15
91
45
13
21
23
114
10
67
5.2
59
.35
0.1
44
.03
5.7
30
.62
6.1
22
.42
0.1
18
.01
6.3
14
.07
.19
CTA
12
-85
X3
88
30
22
52
21
41
89
16
91
54
14
11
30
12
111
37
9.9
63
.05
3.3
46
.83
7.9
32
.62
7.7
23
.82
1.3
19
.11
7.3
14
.97
.64
CTA
12
-10
0X
45
63
55
29
62
52
22
31
99
18
11
66
15
41
43
13
39
4.0
74
.16
2.7
55
.04
4.6
38
.33
2.6
28
.02
5.1
22
.52
0.4
17
.58
.99
CTA
12
-12
5X
54
74
26
35
63
02
26
72
38
21
71
99
18
41
79
16
611
79
2.7
78
.36
8.8
55
.84
7.9
40
.73
5.0
31
.42
8.1
25
.52
1.9
11.2
CTA
12
-15
5X
63
84
99
41
03
58
32
02
90
26
62
49
23
52
24
21
21
55
12
51
07
95
.17
4.4
62
.05
2.2
45
.24
1.0
36
.83
3.4
28
.91
4.9
Ba
tte
ry T
yp
e 1
0m
in
15
min
2
0m
in 2
5m
in 3
0m
in 3
5m
in 4
0m
in 4
5m
in 5
0m
in 5
5m
in 1
h 1
.5h
2
h 2
.5h
3
h 4
h 5
h 6
h 7
h 8
h 9
h 1
0h
1
2h
2
4h
Co
nst
an
t P
ow
er
Dis
cha
rge
(
Wa
tts
pe
r ce
ll )
at 2
0C to
1.6
5 v
olts
pe
r ce
llo
Ba
tte
ry T
yp
e 1
0m
in
15
min
2
0m
in 2
5m
in 3
0m
in 3
5m
in 4
0m
in 4
5m
in 5
0m
in 5
5m
in 1
h 1
.5h
2
h 2
.5h
3
h 4
h 5
h 6
h 7
h 8
h 9
h 1
0h
1
2h
2
4h
Co
nst
an
t P
ow
er
Dis
cha
rge
(
Wa
tts
pe
r ce
ll )
at 2
0C to
1.7
0 v
olts
pe
r ce
llo
CTA
12
-50
X2
111
68
14
11
22
10
89
6.2
87
.57
9.2
74
.06
9.0
64
.44
5.8
36
.03
0.7
27
.12
2.0
18
.81
6.0
13
.81
2.4
11.2
10
.18
.70
4.4
8
CTA
12
-75
X3
16
25
22
12
18
31
61
14
41
31
119
111
10
49
6.6
68
.75
3.9
46
.04
0.7
33
.02
8.3
23
.92
0.6
18
.61
6.7
15
.21
3.1
6.7
1
CTA
12
-80
X3
37
26
92
26
19
51
72
15
41
40
12
711
811
01
03
73
.35
7.5
49
.04
3.4
35
.23
0.1
25
.52
2.0
19
.81
7.8
16
.21
3.9
7.1
6
CTA
12
-85
X3
58
28
52
40
20
71
83
16
31
49
13
51
26
117
110
77
.96
1.1
52
.14
6.1
37
.43
2.0
27
.12
3.4
21
.11
9.0
17
.21
4.8
7.6
1
CTA
12
-10
0X
42
23
36
28
22
44
21
51
92
17
51
58
14
81
38
12
99
1.6
71
.96
1.3
54
.24
4.0
37
.73
1.9
27
.52
4.8
22
.32
0.2
17
.48
.95
CTA
12
-12
5X
50
64
03
33
82
93
25
82
31
21
01
90
17
71
73
16
111
58
9.9
76
.66
7.8
55
.04
7.1
39
.93
4.4
31
.02
7.9
25
.32
1.8
11.2
CTA
12
-15
5X
60
84
74
39
13
46
30
82
82
25
92
44
23
02
19
20
91
53
12
31
06
94
.47
3.8
61
.55
1.7
44
.84
0.6
36
.53
3.1
28
.61
4.8
CTA
12
-50
X1
95
15
91
33
115
10
39
2.3
84
.77
7.1
71
.86
7.3
63
.54
5.1
35
.43
0.2
26
.72
1.7
18
.41
5.7
13
.61
2.4
11.1
10
.18
.69
4.4
5
CTA
12
-75
X2
93
23
82
00
17
31
54
13
81
27
116
10
81
01
95
.36
7.7
53
.14
5.3
40
.13
2.5
27
.62
3.6
20
.41
8.5
16
.61
5.1
13
.06
.68
CTA
12
-80
X3
13
25
42
13
18
51
64
14
81
36
12
311
51
08
10
27
2.2
56
.64
8.3
42
.73
4.6
29
.52
5.1
21
.81
9.8
17
.71
6.1
13
.97
.12
CTA
12
-85
X3
32
27
02
26
19
61
74
15
71
44
13
11
22
114
10
87
6.7
60
.25
1.3
45
.43
6.8
31
.32
6.7
23
.12
1.0
18
.81
7.1
14
.87
.57
CTA
12
-10
0X
39
13
18
26
62
31
20
51
84
16
91
54
14
41
35
12
79
0.2
70
.86
0.4
53
.44
3.3
36
.83
1.4
27
.22
4.7
22
.12
0.1
17
.48
.90
CTA
12
-12
5X
46
93
81
31
92
77
24
62
21
20
31
85
17
21
68
15
911
38
8.5
75
.56
6.8
54
.14
6.0
39
.33
4.0
30
.92
7.6
25
.12
1.7
11.1
CTA
12
-15
5X
55
84
49
37
83
37
30
12
73
25
22
38
22
52
15
20
41
51
12
11
05
93
.77
3.3
61
.05
1.3
44
.44
0.4
36
.23
2.9
28
.41
4.7
Co
nst
an
t C
urr
en
t D
isch
arg
e (
Am
pe
res
) a
t 2
0C
to
1.8
0 v
olts
pe
r ce
llo
Ba
tte
ry T
yp
e 1
0m
in
15
min
2
0m
in 2
5m
in 3
0m
in 3
5m
in 4
0m
in 4
5m
in 5
0m
in 5
5m
in 1
h 1
.5h
2
h 2
.5h
3
h 4
h 5
h 6
h 7
h 8
h 9
h 1
0h
1
2h
2
4h
Co
nst
an
t C
urr
en
t D
isch
arg
e (
Am
pe
res
) a
t 2
0C
to
1.7
5 v
olts
pe
r ce
llo
Ba
tte
ry T
yp
e 1
0m
in
15
min
2
0m
in 2
5m
in 3
0m
in 3
5m
in 4
0m
in 4
5m
in 5
0m
in 5
5m
in 1
h 1
.5h
2
h 2
.5h
3
h 4
h 5
h 6
h 7
h 8
h 9
h 1
0h
1
2h
2
4h
CTA
12
-50
X1
07
85
.57
2.5
62
.45
5.7
49
.64
4.7
41
.03
7.9
35
.23
3.0
23
.71
8.7
15
.71
3.7
11.1
9.3
77
.95
6.9
36
.17
5.5
75
.10
4.4
12
.32
CTA
12
-75
X1
60
12
81
09
93
.68
3.6
74
.46
7.1
61
.55
6.9
52
.94
9.6
35
.52
8.1
23
.62
0.6
16
.71
4.1
11.9
10
.49
.25
8.3
67
.65
6.6
13
.47
CTA
12
-80
X1
70
13
711
61
00
89
.17
9.4
71
.56
5.6
60
.75
6.4
52
.93
7.8
29
.92
5.1
21
.91
7.8
15
.01
2.7
11.1
9.9
08
.92
8.1
67
.05
3.7
0
CTA
12
-85
X1
81
14
51
23
10
69
4.7
84
.37
6.0
69
.76
4.5
59
.95
6.2
40
.23
1.8
26
.72
3.3
18
.91
5.9
13
.511
.81
0.5
9.4
88
.67
7.4
93
.94
CTA
12
-10
0X
21
31
71
14
51
25
111
99
.28
9.4
82
.07
5.9
70
.56
6.1
47
.33
7.4
31
.42
7.4
22
.21
8.8
15
.91
3.9
12
.311
.21
0.2
8.8
14
.63
CTA
12
-12
5X
26
62
14
18
11
56
13
91
24
112
10
39
4.8
88
.18
2.6
59
.14
6.8
39
.33
4.3
27
.82
3.4
19
.91
7.3
15
.41
3.9
12
.811
.05
.79
CTA
12
-15
5X
30
02
50
21
31
85
16
41
44
13
51
25
118
112
10
77
8.9
62
.25
2.7
46
.33
6.2
30
.22
5.3
21
.81
9.3
17
.31
5.6
13
.87
.28
CTA
12
-50
X1
00
82
.06
9.0
60
.35
3.9
48
.44
3.7
40
.03
7.0
34
.43
2.1
23
.21
8.3
15
.41
3.5
10
.99
.14
7.7
66
.77
6.0
45
.46
5.0
04
.32
2.2
7
CTA
12
-75
X1
50
12
31
04
90
.48
0.9
72
.56
5.5
60
.05
5.5
51
.54
8.2
34
.82
7.5
23
.12
0.2
16
.41
3.7
11.6
10
.29
.05
8.1
97
.50
6.4
93
.41
CTA
12
-80
X1
60
13
111
09
6.0
86
.37
7.4
69
.86
4.0
59
.25
5.0
51
.43
7.1
29
.32
4.6
21
.51
7.4
14
.61
2.4
10
.89
.70
8.7
48
.00
6.9
23
.63
CTA
12
-85
X1
70
13
911
71
02
91
.78
2.2
74
.26
8.0
62
.95
8.4
54
.63
9.4
31
.12
6.2
22
.91
8.5
15
.51
3.2
11.5
10
.39
.28
8.5
07
.35
3.8
6
CTA
12
-10
0X
20
01
64
13
81
20
10
89
6.7
87
.38
0.0
74
.06
8.7
64
.34
6.4
36
.63
0.8
26
.92
1.8
18
.31
5.5
13
.61
2.1
10
.91
0.0
8.6
54
.54
CTA
12
-12
5X
25
02
05
17
31
51
13
51
21
10
91
00
92
.58
5.9
80
.35
8.0
45
.83
8.5
33
.62
7.3
22
.91
9.4
16
.91
5.1
13
.71
2.5
10
.85
.68
CTA
12
-15
5X
28
12
28
19
51
73
15
11
38
12
711
911
41
07
10
27
7.0
61
.55
2.2
46
.03
6.0
30
.02
5.1
21
.61
9.2
17
.21
5.5
13
.77
.23
65
Pe
rfo
rma
nce
Da
ta W
atts
pe
r ce
ll C
on
sta
nt
Cu
rre
nt
Dis
ch
arg
e p
erf
orm
an
ce
Ba
tte
ry T
yp
e 1
0m
in
15
min
2
0m
in 2
5m
in 3
0m
in 3
5m
in 4
0m
in 4
5m
in 5
0m
in 5
5m
in 1
h 1
.5h
2
h 2
.5h
3
h 4
h 5
h 6
h 7
h 8
h 9
h 1
0h
1
2h
2
4h
Co
nst
an
t P
ow
er
Dis
cha
rge
(
Wa
tts
pe
r ce
ll )
at 2
0C to
1.6
0 v
olts
pe
r ce
llo
CTA
12
-50
X2
28
17
71
48
12
611
19
9.3
90
.68
2.8
76
.77
1.4
66
.54
7.0
37
.13
1.3
27
.52
2.3
19
.21
6.3
14
.01
2.6
11.3
10
.28
.75
4.5
0
CTA
12
-75
X3
42
26
62
22
18
91
67
14
91
36
12
411
51
07
99
.87
0.5
55
.64
7.0
41
.33
3.5
28
.72
4.4
21
.01
8.8
16
.91
5.3
13
.16
.74
CTA
12
-80
X3
65
28
42
37
20
21
78
15
91
45
13
21
23
114
10
67
5.2
59
.35
0.1
44
.03
5.7
30
.62
6.1
22
.42
0.1
18
.01
6.3
14
.07
.19
CTA
12
-85
X3
88
30
22
52
21
41
89
16
91
54
14
11
30
12
111
37
9.9
63
.05
3.3
46
.83
7.9
32
.62
7.7
23
.82
1.3
19
.11
7.3
14
.97
.64
CTA
12
-10
0X
45
63
55
29
62
52
22
31
99
18
11
66
15
41
43
13
39
4.0
74
.16
2.7
55
.04
4.6
38
.33
2.6
28
.02
5.1
22
.52
0.4
17
.58
.99
CTA
12
-12
5X
54
74
26
35
63
02
26
72
38
21
71
99
18
41
79
16
611
79
2.7
78
.36
8.8
55
.84
7.9
40
.73
5.0
31
.42
8.1
25
.52
1.9
11.2
CTA
12
-15
5X
63
84
99
41
03
58
32
02
90
26
62
49
23
52
24
21
21
55
12
51
07
95
.17
4.4
62
.05
2.2
45
.24
1.0
36
.83
3.4
28
.91
4.9
Ba
tte
ry T
yp
e 1
0m
in
15
min
2
0m
in 2
5m
in 3
0m
in 3
5m
in 4
0m
in 4
5m
in 5
0m
in 5
5m
in 1
h 1
.5h
2
h 2
.5h
3
h 4
h 5
h 6
h 7
h 8
h 9
h 1
0h
1
2h
2
4h
Co
nst
an
t P
ow
er
Dis
cha
rge
(
Wa
tts
pe
r ce
ll )
at 2
0C to
1.6
5 v
olts
pe
r ce
llo
Ba
tte
ry T
yp
e 1
0m
in
15
min
2
0m
in 2
5m
in 3
0m
in 3
5m
in 4
0m
in 4
5m
in 5
0m
in 5
5m
in 1
h 1
.5h
2
h 2
.5h
3
h 4
h 5
h 6
h 7
h 8
h 9
h 1
0h
1
2h
2
4h
Co
nst
an
t P
ow
er
Dis
cha
rge
(
Wa
tts
pe
r ce
ll )
at 2
0C to
1.7
0 v
olts
pe
r ce
llo
CTA
12
-50
X2
111
68
14
11
22
10
89
6.2
87
.57
9.2
74
.06
9.0
64
.44
5.8
36
.03
0.7
27
.12
2.0
18
.81
6.0
13
.81
2.4
11.2
10
.18
.70
4.4
8
CTA
12
-75
X3
16
25
22
12
18
31
61
14
41
31
119
111
10
49
6.6
68
.75
3.9
46
.04
0.7
33
.02
8.3
23
.92
0.6
18
.61
6.7
15
.21
3.1
6.7
1
CTA
12
-80
X3
37
26
92
26
19
51
72
15
41
40
12
711
811
01
03
73
.35
7.5
49
.04
3.4
35
.23
0.1
25
.52
2.0
19
.81
7.8
16
.21
3.9
7.1
6
CTA
12
-85
X3
58
28
52
40
20
71
83
16
31
49
13
51
26
117
110
77
.96
1.1
52
.14
6.1
37
.43
2.0
27
.12
3.4
21
.11
9.0
17
.21
4.8
7.6
1
CTA
12
-10
0X
42
23
36
28
22
44
21
51
92
17
51
58
14
81
38
12
99
1.6
71
.96
1.3
54
.24
4.0
37
.73
1.9
27
.52
4.8
22
.32
0.2
17
.48
.95
CTA
12
-12
5X
50
64
03
33
82
93
25
82
31
21
01
90
17
71
73
16
111
58
9.9
76
.66
7.8
55
.04
7.1
39
.93
4.4
31
.02
7.9
25
.32
1.8
11.2
CTA
12
-15
5X
60
84
74
39
13
46
30
82
82
25
92
44
23
02
19
20
91
53
12
31
06
94
.47
3.8
61
.55
1.7
44
.84
0.6
36
.53
3.1
28
.61
4.8
CTA
12
-50
X1
95
15
91
33
115
10
39
2.3
84
.77
7.1
71
.86
7.3
63
.54
5.1
35
.43
0.2
26
.72
1.7
18
.41
5.7
13
.61
2.4
11.1
10
.18
.69
4.4
5
CTA
12
-75
X2
93
23
82
00
17
31
54
13
81
27
116
10
81
01
95
.36
7.7
53
.14
5.3
40
.13
2.5
27
.62
3.6
20
.41
8.5
16
.61
5.1
13
.06
.68
CTA
12
-80
X3
13
25
42
13
18
51
64
14
81
36
12
311
51
08
10
27
2.2
56
.64
8.3
42
.73
4.6
29
.52
5.1
21
.81
9.8
17
.71
6.1
13
.97
.12
CTA
12
-85
X3
32
27
02
26
19
61
74
15
71
44
13
11
22
114
10
87
6.7
60
.25
1.3
45
.43
6.8
31
.32
6.7
23
.12
1.0
18
.81
7.1
14
.87
.57
CTA
12
-10
0X
39
13
18
26
62
31
20
51
84
16
91
54
14
41
35
12
79
0.2
70
.86
0.4
53
.44
3.3
36
.83
1.4
27
.22
4.7
22
.12
0.1
17
.48
.90
CTA
12
-12
5X
46
93
81
31
92
77
24
62
21
20
31
85
17
21
68
15
911
38
8.5
75
.56
6.8
54
.14
6.0
39
.33
4.0
30
.92
7.6
25
.12
1.7
11.1
CTA
12
-15
5X
55
84
49
37
83
37
30
12
73
25
22
38
22
52
15
20
41
51
12
11
05
93
.77
3.3
61
.05
1.3
44
.44
0.4
36
.23
2.9
28
.41
4.7
Co
nst
an
t C
urr
en
t D
isch
arg
e (
Am
pe
res
) a
t 2
0C
to
1.8
0 v
olts
pe
r ce
llo
Ba
tte
ry T
yp
e 1
0m
in
15
min
2
0m
in 2
5m
in 3
0m
in 3
5m
in 4
0m
in 4
5m
in 5
0m
in 5
5m
in 1
h 1
.5h
2
h 2
.5h
3
h 4
h 5
h 6
h 7
h 8
h 9
h 1
0h
1
2h
2
4h
Co
nst
an
t C
urr
en
t D
isch
arg
e (
Am
pe
res
) a
t 2
0C
to
1.7
5 v
olts
pe
r ce
llo
Ba
tte
ry T
yp
e 1
0m
in
15
min
2
0m
in 2
5m
in 3
0m
in 3
5m
in 4
0m
in 4
5m
in 5
0m
in 5
5m
in 1
h 1
.5h
2
h 2
.5h
3
h 4
h 5
h 6
h 7
h 8
h 9
h 1
0h
1
2h
2
4h
CTA
12
-50
X1
07
85
.57
2.5
62
.45
5.7
49
.64
4.7
41
.03
7.9
35
.23
3.0
23
.71
8.7
15
.71
3.7
11.1
9.3
77
.95
6.9
36
.17
5.5
75
.10
4.4
12
.32
CTA
12
-75
X1
60
12
81
09
93
.68
3.6
74
.46
7.1
61
.55
6.9
52
.94
9.6
35
.52
8.1
23
.62
0.6
16
.71
4.1
11.9
10
.49
.25
8.3
67
.65
6.6
13
.47
CTA
12
-80
X1
70
13
711
61
00
89
.17
9.4
71
.56
5.6
60
.75
6.4
52
.93
7.8
29
.92
5.1
21
.91
7.8
15
.01
2.7
11.1
9.9
08
.92
8.1
67
.05
3.7
0
CTA
12
-85
X1
81
14
51
23
10
69
4.7
84
.37
6.0
69
.76
4.5
59
.95
6.2
40
.23
1.8
26
.72
3.3
18
.91
5.9
13
.511
.81
0.5
9.4
88
.67
7.4
93
.94
CTA
12
-10
0X
21
31
71
14
51
25
111
99
.28
9.4
82
.07
5.9
70
.56
6.1
47
.33
7.4
31
.42
7.4
22
.21
8.8
15
.91
3.9
12
.311
.21
0.2
8.8
14
.63
CTA
12
-12
5X
26
62
14
18
11
56
13
91
24
112
10
39
4.8
88
.18
2.6
59
.14
6.8
39
.33
4.3
27
.82
3.4
19
.91
7.3
15
.41
3.9
12
.811
.05
.79
CTA
12
-15
5X
30
02
50
21
31
85
16
41
44
13
51
25
118
112
10
77
8.9
62
.25
2.7
46
.33
6.2
30
.22
5.3
21
.81
9.3
17
.31
5.6
13
.87
.28
CTA
12
-50
X1
00
82
.06
9.0
60
.35
3.9
48
.44
3.7
40
.03
7.0
34
.43
2.1
23
.21
8.3
15
.41
3.5
10
.99
.14
7.7
66
.77
6.0
45
.46
5.0
04
.32
2.2
7
CTA
12
-75
X1
50
12
31
04
90
.48
0.9
72
.56
5.5
60
.05
5.5
51
.54
8.2
34
.82
7.5
23
.12
0.2
16
.41
3.7
11.6
10
.29
.05
8.1
97
.50
6.4
93
.41
CTA
12
-80
X1
60
13
111
09
6.0
86
.37
7.4
69
.86
4.0
59
.25
5.0
51
.43
7.1
29
.32
4.6
21
.51
7.4
14
.61
2.4
10
.89
.70
8.7
48
.00
6.9
23
.63
CTA
12
-85
X1
70
13
911
71
02
91
.78
2.2
74
.26
8.0
62
.95
8.4
54
.63
9.4
31
.12
6.2
22
.91
8.5
15
.51
3.2
11.5
10
.39
.28
8.5
07
.35
3.8
6
CTA
12
-10
0X
20
01
64
13
81
20
10
89
6.7
87
.38
0.0
74
.06
8.7
64
.34
6.4
36
.63
0.8
26
.92
1.8
18
.31
5.5
13
.61
2.1
10
.91
0.0
8.6
54
.54
CTA
12
-12
5X
25
02
05
17
31
51
13
51
21
10
91
00
92
.58
5.9
80
.35
8.0
45
.83
8.5
33
.62
7.3
22
.91
9.4
16
.91
5.1
13
.71
2.5
10
.85
.68
CTA
12
-15
5X
28
12
28
19
51
73
15
11
38
12
711
911
41
07
10
27
7.0
61
.55
2.2
46
.03
6.0
30
.02
5.1
21
.61
9.2
17
.21
5.5
13
.77
.23
The following examples are designed to illustrate the
method of determining which Front Terminal
unit will support your required duty load.
VISION CTA
Constant current discharge
EXAMPLE A. To demonstrate constant current calculation and
also the effect of temperature.
CTA12-100X
A nominal 50V telecommunications system using a 24 cell
battery and requiring 18.5 amps constant current will operate
satisfactorily at a minimum battery terminal volts level of 42
volts.
Calculate the battery type required for 5 hours standby
duration on the basis of:
(a) 20 operating temperature
(b) 0 operating temperature
METHOD
Minimum allowable volts per cell
42 volts
= 1.75Vpc24 cells
Hence, cell performance requirement is 18.5 amps
Constant current to 1.75Vpc
By reference to constant current performance table
relating to 1.75 volts per cell level (see page 5):
(a) at 20
CTA12-100X unit size is smallest available size to use
(18.8 amps available).
Conclusion: Use 4 - .
(b) at 0
By reference to the table on page 10 of this
product guide, available current output at 20 is
reduced by factor 0.83.
The refore at 0 - 5 hours output is reduced to,
on CTA12-100X size, 18.8 amps x 0.83 = 15.8 amps.
Hence CTA12-100X unit size too small!
Try the next largest unit size - CTA12-125X. At 0 available
current output is 23.4 amps x 0.83 =19.4 amps.
Conclusion: Use 4 - CTA12-125X.
oCoC
oC
oC
oC
oC
oC
(1)
(2)
(3)
Constant power discharge
EXAMPLE B. To demonstrate constant power
calculation.
20
An inverter system requires a D.C. constant power input of
5.8 kW in the voltage range 451 volts maximum, 317 volts
minimum.
Calculate the optimum battery size required for
operation for a 4 hour standby period.
METHOD
Number of cells
= 451/2.28Vpc = 198 cells.
Minimum volt per cell
317/198 = 1.6Vpc.
Watts per cell
= 5800 watts / 198 cells = 29.3watts per cell.
Hence cell performance requirement is 29.3 watts to
1.6Vpc at 20 .
By reference to the constant power performance table
(see page 6) relating to 1.6 volts per cell level,
CTA12-75X monobloc is the correct available size to use.
oC
oC
(1)
(2)
(3)
(4)
(5)
Selection of battery size
87
www.vision-batt.com
VISION Rechargeable Products
Sealed Lead Acid Battery
Ba
tte
ry T
yp
e 1
0m
in
15
min
2
0m
in 2
5m
in 3
0m
in 3
5m
in 4
0m
in 4
5m
in 5
0m
in 5
5m
in 1
h 1
.5h
2
h 2
.5h
3
h 4
h 5
h 6
h 7
h 8
h 9
h 1
0h
1
2h
2
4h
Co
nst
an
t P
ow
er
Dis
cha
rge
(
Wa
tts
pe
r ce
ll )
at 2
0C to
1.8
0 v
olts
pe
r ce
llo
Ba
tte
ry T
yp
e 1
0m
in
15
min
2
0m
in 2
5m
in 3
0m
in 3
5m
in 4
0m
in 4
5m
in 5
0m
in 5
5m
in 1
h 1
.5h
2
h 2
.5h
3
h 4
h 5
h 6
h 7
h 8
h 9
h 1
0h
1
2h
2
4h
Co
nst
an
t P
ow
er
Dis
cha
rge
(
Wa
tts
pe
r ce
ll )
at 2
0C to
1.7
5 v
olts
pe
r ce
llo
CTA
12
-50
X1
82
14
91
26
111
99
.08
8.5
81
.17
5.7
69
.86
6.1
61
.84
4.2
34
.92
9.7
26
.32
1.4
18
.21
5.5
13
.41
2.3
11.0
10
.08
.65
4.4
3
CTA
12
-75
X2
74
22
31
89
16
61
48
13
31
22
114
10
59
9.0
92
.76
6.2
52
.34
4.6
39
.53
2.0
27
.42
3.3
20
.11
8.4
16
.51
5.0
13
.06
.65
CTA
12
-80
X2
92
23
82
01
17
71
58
14
21
30
12
111
21
06
99
.07
0.6
55
.84
7.5
42
.13
4.2
29
.22
4.8
21
.41
9.6
17
.61
6.0
13
.87
.09
CTA
12
-85
X3
10
25
32
14
18
91
68
15
01
38
12
911
911
21
05
75
.15
9.2
50
.54
4.7
36
.33
1.0
26
.42
2.8
20
.81
8.7
17
.01
4.7
7.5
3
CTA
12
-10
0X
36
52
98
25
22
22
19
81
77
16
21
51
14
01
32
12
48
8.3
69
.75
9.4
52
.64
2.7
36
.53
1.0
26
.82
4.5
22
.02
0.0
17
.38
.86
CTA
12
-12
5X
43
83
57
30
22
66
23
72
12
19
51
82
16
81
65
15
411
08
7.1
74
.36
5.8
53
.44
5.6
38
.83
3.5
30
.62
7.5
25
.02
1.6
11.1
CTA
12
-15
5X
52
04
30
36
43
26
29
32
67
24
82
32
22
12
112
00
14
91
20
10
49
2.5
72
.76
0.5
50
.94
4.1
40
.03
5.9
32
.62
8.2
14
.6
CTA
12
-50
X1
66
13
711
81
04
94
.08
5.3
78
.37
3.3
68
.46
4.1
60
.14
3.2
34
.32
9.3
25
.92
1.1
17
.91
5.3
13
.31
2.1
10
.99
.84
8.5
04
.41
CTA
12
-75
X2
49
20
61
77
15
51
41
12
811
811
01
03
96
.29
0.2
64
.95
1.5
43
.93
8.8
31
.62
6.9
23
.01
9.9
18
.11
6.3
14
.81
2.8
6.6
1
CTA
12
-80
X2
66
22
01
89
16
61
51
13
61
25
117
10
91
03
96
.06
9.2
54
.94
6.8
41
.43
3.7
28
.72
4.5
21
.21
9.3
17
.41
5.7
13
.67
.05
CTA
12
-85
X2
82
23
42
01
17
61
60
14
51
33
12
511
61
09
10
27
3.5
58
.34
9.7
43
.93
5.8
30
.52
6.0
22
.52
0.5
18
.51
6.7
14
.57
.49
CTA
12
-10
0X
33
22
75
23
72
07
18
81
71
15
71
47
13
71
28
12
08
6.5
68
.65
8.5
51
.74
2.1
35
.93
0.6
26
.52
4.1
21
.81
9.7
17
.08
.81
CTA
12
-12
5X
39
83
30
28
42
48
22
62
05
18
81
76
16
41
60
15
01
08
85
.87
3.1
64
.65
2.6
44
.93
8.3
33
.13
0.1
27
.22
4.6
21
.311
.0
CTA
12
-15
5X
49
24
08
35
23
13
28
22
61
24
22
29
21
72
06
19
61
47
118
10
39
1.0
72
.16
0.0
50
.54
3.7
39
.73
5.6
32
.42
8.0
14
.5
The following examples are designed to illustrate the
method of determining which Front Terminalunit will support your required duty load.
ST CTA
Constant current discharge
EXAMPLE A. To demonstrate constant current calculation and
also the effect of temperature.
CTA12-100X
A nominal 50V telecommunications system using a 24 cell
battery and requiring 18.5 amps constant current will operate
satisfactorily at a minimum battery terminal volts level of 42
volts.
Calculate the battery type required for 5 hours standby
duration on the basis of:
(a) 20 operating temperature
(b) 0 operating temperature
METHOD
Minimum allowable volts per cell
42 volts
= 1.75Vpc24 cells
Hence, cell performance requirement is 18.5 amps
Constant current to 1.75Vpc
By reference to constant current performance table
relating to 1.75 volts per cell level (see page 5):
(a) at 20
CTA12-100X unit size is smallest available size to use
(18.8 amps available).
Conclusion: Use 4 - .
(b) at 0
By reference to the table on page 10 of this
product guide, available current output at 20 is
reduced by factor 0.83.
The refore at 0 - 5 hours output is reduced to,
on CTA12-100X size, 18.8 amps x 0.83 = 15.8 amps.
Hence CTA12-100X unit size too small!
Try the next largest unit size - CTA12-125X. At 0 available
current output is 23.4 amps x 0.83 =19.4 amps.
Conclusion: Use 4 - CTA12-125X.
oCoC
oC
oC
oC
oC
oC
(1)
(2)
(3)
Constant power discharge
EXAMPLE B. To demonstrate constant power
calculation.
20
An inverter system requires a D.C. constant power input of
5.8 kW in the voltage range 451 volts maximum, 317 volts
minimum.
Calculate the optimum battery size required for
operation for a 4 hour standby period.
METHOD
Number of cells
= 451/2.28Vpc = 198 cells.
Minimum volt per cell
317/198 = 1.6Vpc.
Watts per cell
= 5800 watts / 198 cells = 29.3watts per cell.
Hence cell performance requirement is 29.3 watts to
1.6Vpc at 20 .
By reference to the constant power performance table
(see page 6) relating to 1.6 volts per cell level,
CTA12-75X monobloc is the correct available size to use.
oC
oC
(1)
(2)
(3)
(4)
(5)
Selection of battery size
87
ST Rechargeable ProductsSealed Lead Acid Battery
Ba
tte
ry T
yp
e 1
0m
in
15
min
2
0m
in 2
5m
in 3
0m
in 3
5m
in 4
0m
in 4
5m
in 5
0m
in 5
5m
in 1
h 1
.5h
2
h 2
.5h
3
h 4
h 5
h 6
h 7
h 8
h 9
h 1
0h
1
2h
2
4h
Co
nst
an
t P
ow
er
Dis
cha
rge
(
Wa
tts
pe
r ce
ll )
at 2
0C to
1.8
0 v
olts
pe
r ce
llo
Ba
tte
ry T
yp
e 1
0m
in
15
min
2
0m
in 2
5m
in 3
0m
in 3
5m
in 4
0m
in 4
5m
in 5
0m
in 5
5m
in 1
h 1
.5h
2
h 2
.5h
3
h 4
h 5
h 6
h 7
h 8
h 9
h 1
0h
1
2h
2
4h
Co
nst
an
t P
ow
er
Dis
cha
rge
(
Wa
tts
pe
r ce
ll )
at 2
0C to
1.7
5 v
olts
pe
r ce
llo
CTA
12
-50
X1
82
14
91
26
111
99
.08
8.5
81
.17
5.7
69
.86
6.1
61
.84
4.2
34
.92
9.7
26
.32
1.4
18
.21
5.5
13
.41
2.3
11.0
10
.08
.65
4.4
3
CTA
12
-75
X2
74
22
31
89
16
61
48
13
31
22
114
10
59
9.0
92
.76
6.2
52
.34
4.6
39
.53
2.0
27
.42
3.3
20
.11
8.4
16
.51
5.0
13
.06
.65
CTA
12
-80
X2
92
23
82
01
17
71
58
14
21
30
12
111
21
06
99
.07
0.6
55
.84
7.5
42
.13
4.2
29
.22
4.8
21
.41
9.6
17
.61
6.0
13
.87
.09
CTA
12
-85
X3
10
25
32
14
18
91
68
15
01
38
12
911
911
21
05
75
.15
9.2
50
.54
4.7
36
.33
1.0
26
.42
2.8
20
.81
8.7
17
.01
4.7
7.5
3
CTA
12
-10
0X
36
52
98
25
22
22
19
81
77
16
21
51
14
01
32
12
48
8.3
69
.75
9.4
52
.64
2.7
36
.53
1.0
26
.82
4.5
22
.02
0.0
17
.38
.86
CTA
12
-12
5X
43
83
57
30
22
66
23
72
12
19
51
82
16
81
65
15
411
08
7.1
74
.36
5.8
53
.44
5.6
38
.83
3.5
30
.62
7.5
25
.02
1.6
11.1
CTA
12
-15
5X
52
04
30
36
43
26
29
32
67
24
82
32
22
12
112
00
14
91
20
10
49
2.5
72
.76
0.5
50
.94
4.1
40
.03
5.9
32
.62
8.2
14
.6
CTA
12
-50
X1
66
13
711
81
04
94
.08
5.3
78
.37
3.3
68
.46
4.1
60
.14
3.2
34
.32
9.3
25
.92
1.1
17
.91
5.3
13
.31
2.1
10
.99
.84
8.5
04
.41
CTA
12
-75
X2
49
20
61
77
15
51
41
12
811
811
01
03
96
.29
0.2
64
.95
1.5
43
.93
8.8
31
.62
6.9
23
.01
9.9
18
.11
6.3
14
.81
2.8
6.6
1
CTA
12
-80
X2
66
22
01
89
16
61
51
13
61
25
117
10
91
03
96
.06
9.2
54
.94
6.8
41
.43
3.7
28
.72
4.5
21
.21
9.3
17
.41
5.7
13
.67
.05
CTA
12
-85
X2
82
23
42
01
17
61
60
14
51
33
12
511
61
09
10
27
3.5
58
.34
9.7
43
.93
5.8
30
.52
6.0
22
.52
0.5
18
.51
6.7
14
.57
.49
CTA
12
-10
0X
33
22
75
23
72
07
18
81
71
15
71
47
13
71
28
12
08
6.5
68
.65
8.5
51
.74
2.1
35
.93
0.6
26
.52
4.1
21
.81
9.7
17
.08
.81
CTA
12
-12
5X
39
83
30
28
42
48
22
62
05
18
81
76
16
41
60
15
01
08
85
.87
3.1
64
.65
2.6
44
.93
8.3
33
.13
0.1
27
.22
4.6
21
.311
.0
CTA
12
-15
5X
49
24
08
35
23
13
28
22
61
24
22
29
21
72
06
19
61
47
118
10
39
1.0
72
.16
0.0
50
.54
3.7
39
.73
5.6
32
.42
8.0
14
.5
Communication Batterieswww.vision-batt.com
9 10
Operating Characteristics
The Front Terminal units should be charged
using constant potential chargers.
VISION CTA
Float voltage
At normal room temperature (20 ), the recommended float
voltage is equal to 2.27 volts per cell.
To optimise battery performance it is recommended that the
float voltage is adjusted for room ambient temperatures in
accordance with the following table.
oC
Temperature Float voltage range per cell
0 2.33-2.36V
10 2.30-2.33V
20 2.27-2.30V
25 2.25-2.28V
30 2.24-2.27V
35 2.22-2.25V
40 2.21-2.24V
Under these conditions a recharge will be completed in
approximately 72 hours.
oC
oC
oC
oC
oC
oC
oC
Charging current
Note: For a completely discharged battery, 80% of the capacity is
replaced in approximately:
10 hours at 0.1 C10
6 hours at 0.3 C10
5 hours no current limit applied
A discharged VRLA battery will accept a high recharge
current, but for those seeking a more economical charging
system a current limit of 0.3 C10 (A) is adequate.
Fast recharge
Increasing the charge voltage to 14.4~14.7volts per cell can
reduce recharge time and it is possible, depending on the
depth of discharge, to halve the recharge time. Under these
conditions, however, the charge must be monitored and
must be terminated when the charge current remains
reasonably steady for 3 consecutive hours after the voltage
limit has been reached. At the beginning of charge the
current must be limited to 0.3 C10 (A). This charge regime,
in order to achieve a normal service life, must not be
used more than once per month
The effect of temperature on capacity
Correction factors for capacity at different temperatures are
shown in the following table, the reference temperature
being 20 .oC
Duration of
discharge
15min
1 hour
10hour
-15 -10 -5 0 5 10 15 20 25 30 35 40
0.50 0.56 0.63 0.70 0.77 0.84 0.92 1.00 1.08 1.16 1.24 1.31
0.62 0.67 0.73 0.78 0.84 0.89 0.95 1.00 1.05 1.10 1.15 1.20
0.73 0.77 0.81 0.85 0.89 0.93 0.96 1.00 1.03 1.06 1.09 1.11
o o o o o o o o o o o oC C C C C C C C C C C C
Battery temperature
www.vision-batt.com
VISION Rechargeable Products
Sealed Lead Acid Battery
Technology
Principle of the oxygen reduction cycle
PbO2
Positive Plate
Pb
Negative Plate
2
Separator
+ -
H SO2 4
+ -Charger
Valve
O
Electrolyte in absorptive glass mat
ST CTA
PbO2
Positive Plate
Pb
Negative Plate
Separator
+ -
H SO2 4
+ -Charger
2H
Liquid electrolyte
Convention Cell
2O
Principle of VRLA batteries
During charging of conventional lead acid battery,
electrolysis of water occurs at the final stage and
hydrogen generates from the negative plates and
oxygen from the positive plates. This causes water
loss and periodic watering is needed.
However, evolution of oxygen and hydrogen gases
do
