BATTERY DISCHARGER at constant current
English
D01470-03
19
In every working condition, the lit up LED show which are the operating keys.
I:
discharging current.
It is automatically set out at the minimum discharging value (1 or 2 ampere according to the model) and
therefore it is necessary to state it at the required value.
This value (constant discharge at 5 hours rating) is normally obtained dividing by 5 the battery capacity
expressed with C5. Example: C = 400Ah, I = 400/5 = 80A.
Vstop:
Discharging stop voltage.
For safety reasons it is automatically set out at about 80% of Vbat and therefore it is necessary to change
it if does not correspond to the required value.
This value (constant discharge at 5 hours rating) is normally 1,7 Volt/cell.
Table of “I” values
Table of “Vstop” values
C5 (Ah)
I (A)
Vnom (V)
Vstop (V)
30
6
6
5,1
45
9
12
10,2
50
10
24
20,4
60
12
36
30,6
80
16
40
34
100
20
48
40,8
120
24
60
51
180
36
72
61,2
200
40
80
68
240
48
84
71,4
300
60
96
81,6
360
72
108
91,8
380
76
120
102
400
80
132
112,2
420
84
144
122,4
480
96
156
132,6
500
100
168
142,8
540
108
180
153
600
120
192
163,2
700
140
204
173,4
750
150
216
183,6
T
: discharging time (automatic shut-off).
It is automatically set out at the maximum value equal to 9h and 59m and therefore it is necessary to
change it in case you require a partly discharge with timing shut-off.
The timer function with automatic shut-off can be disabled setting out the value
0h e 00m
.
This operation is needed in case you foresee to employ the item for more than 10 hours (slow discharge).
It is usually not necessary to set out the time and it is sufficient to keep the value automatically set at 9h
and 59m.
4) Battery discharge
Start the discharge pressing the
START/STOP
key.
In this phase the display shows the following:
Vbat:
refers to the battery voltage; it is a voltmeter in all respects.
Vstop:
refers to the interrupting voltage of discharge.
I:
shows the discharging current.
Ah:
shows the discharged amperhours.
