LC-WTP127R2_14 Datasheet, PDF (1/1 Pages) Panasonic Battery Group – For pitch backup systems in wind turbines

LC-WTP127R2
For pitch backup systems in wind turbines
Expected life: 10 years at 20℃, 5 years at 25℃
(based on a weekly discharge cycle of max 15 seconds)
■Dimensions(mm)
Terminal type
6.35
Contents indicated (including the recycle marking,
etc) are subject to change without notice.
Battery case resin: Flame-retardant (UL94V-0)
■Specification
Nominal Voltage
Rated Capacity(20HR)
Length
Dimensions
Width
Height
Total height
Approx. Mass
Terminal
12V
7.2Ah
151 mm
64.5 mm
94 mm
100 mm
2.50 kg
250M
■Duration of discharge vs. discharge current
30
20
40℃
10
5
3
25℃
■Characteristics
20 hour rate
Capacity
(25 ℃)
10 hour rate
3 hour rate
1 hour rate
Fully charged battery
Internal Resistance
(25 ℃)
Temperature
Dependency of
Capacity
(20 hour rate)
40 ℃
25 ℃
0℃
-15 ℃
Self Discharge
(25 ℃)
After 3 months
After 6 months
After 12 months
7.2Ah
6.5Ah
5.8Ah
4.9Ah
21 mΩ
102%
100%
85%
65%
91%
82%
64%
60
0℃
30
10
-15℃
5
3
1
0.1 0.3 1 3 10 30 100
Discharge current(A)
■Large current discharge characteristics(25℃)
Peak current(A for milliseconds)
160 150 140 130 120 112 105 94 86 80 75
Discharge current(A)
144 135 126 117 108 101 95 85 78 72 68
Discharge time(sec)
3 6 10 15 20 25 30 40 50 60 70
Peak current(A for milliseconds)
70
Discharge current(A)
63
Discharge time(sec)
80
The cut off voltage should be more than 8.0V.
Battery should be charged after each discharge.
66 62 59 55 52 49 46 44 42 40
60 56 53 50 47 44 42 40 38 36
90 100 110 120 130 140 150 160 170 180
■Charging Method
**Control voltage: 13.6V~13.8V at 20℃~25℃ with temperature compensation, Initial current: 1.08A or smaller
**Please consult us for the right control voltage if the ambient temperature is different.
■Operating Temperature Range
*Storage
Charge
Discharge
-40℃~ 50℃
-20℃~ 50℃
-20℃~ 50℃
* For storage, please ensure that battery is fully charged.
Data in this sheet are for reference only and are not guaranteed values.
1/1
2009.06