Solar MPPT-10 User Manual

10
temperature, cable voltage drop and also cable material. We suggest
customer to control the maximum battery voltage loss under 1.5%, and control
the maximum voltage loss of solar panels under 2.5%.
The following is the cable length between controller and battery, and the
suggested copper cables:
Cable
Length
Cable Size
in mm
2
Cable Size
in AWG
Voltage Loss
at 10A
(a pair)
Battery Voltage Loss
12V
24V
48V
1m
2.5mm
2
#13 AWG
0.14V
1.2%
0.60%
0.30%
2m
4mm
2
#11 AWG
0.18V
1.5%
0.75%
0.38%
4m
6mm
2
#9 AWG
0.24V
2.0%
1.0%
0.50%
Table 3-4: Cable Length & Cable Voltage Drop
The following is the cable length between solar panels and controller, and
also the suggested copper cables:
Cable
Length
Cable
Size in
mm
2
Cable Size
in AWG
Voltage Loss
at 10A
(a pair)
Solar Panels
Voltage Loss
17V
34V
68V
2m
4mm
2
#11 AWG
0.18V
1.1%
0.53%
0.26%
4m
6mm
2
#9 AWG
0.24V
1.4%
0.71%
0.35%
8m
10mm
2
#7 AWG
0.29V
1.7%
0.86%
0.43%
Table 3-5: Cable Length & Cable Voltage Drop
3.4 Over Current Protection
The electrical equipment used in power circuit must be equipped with over
current and short-circuit protection devices, and there is no exception for
MPPT-10 controller. The controller adopts in the design of common positive
pole inside. We suggest users to install over-current breaker or fuse on the
negative loop of solar panels input, and also the negative loop of battery output.
The capacity of over-current breaker or fuse is 1.25 times of the rated current.
3.5 Lightning Protection
It is the same as other electrical devices that MPPT-20 controller will be
damaged by lightning. The controller has limited surge absorption capacity.
We strongly suggest users to install lightning surge absorption devices to
increase the reliability of the system.

Solar MPPT-10 Specifications

General

Brand	Solar
Model	MPPT-10
Category	Controller
Language	English