TECHNICAL SPECIFICATIONS
EN / Solar ChargeMaster 20, 40 / November 07
15
8 TECHNICAL
SPECIFICATIONS
8.1 Technical
Data
Variable SCM-N-20
SCM-N-40
Nominal voltage
12 / 24 V, automatic recognition
12 / 24 V, automatic recognition
Number of PV cells serial
36 or 72 cells, refer to section 3.2
36 or 72 cells, refer to section 3.2
Max solar voltage input @ Tmin
50 V
50 V
Absorption voltage
14.4 / 28.8 V (25°C)
14.4 / 28.8 V (25°C)
Equalization voltage
14.8 / 29.6 V (25°C), 2 h
14.8 / 29.6 V (25°C), 2 h
Float voltage
13.7 / 27.4 V (25°C)
13.7 / 27.4 V (25°C)
Load disconnect voltage
11.0-12.2 / 22.0 -24.4 V
depending on setting
11.0-12.2 / 22.0 -24.4 V
depending on setting
Load reconnect voltage
12.8 / 25.6 V
12.8 / 25.6 V
Temperature compensation
-24 mV/°C@12V, -48 mV/°C@24V
-24 mV/°C@12V, -48 mV/°C@24V
Max. solar panel current @25°C
(without load current @ 50°C)
20 A
40 A
Max. load current @25°C
(without solar current @ 50°C)
20 A
40 A
Dimensions
140 x 105 x 41 mm (w x h x d)
140 x 105 x 41 mm (w x h x d)
Weight
222 gr
232 gr
Max. wire size
16 mm² (AWG #6)
16 mm² (AWG #6)
No load power consumption
4 mA
4 mA
Ambient temperature
-25 to +50 °C
-25 to +50 °C
Case protection
IP 20
IP 20
8.2 Dimensions
Figure 12 Dimensions in mm
128
38
105
41
140
