Product Description
High Speed with high Performance
UTL`s solar management unit (SMU) is embed with a high speed microcontroller which increases the performance of the solar system. Solar management unit provide ability to perform its task more reliably and efficiently.
High Reliability with Longer Operational Life
It is highly reliable and it has longer operational life. Solar management unit can be operated in extreme environment conditions and can be operated at temperature range that lies in 0°C to 60°C.
Prioritize Solar Power over Grid Power
SMU ensures priority usage of solar energy over government electricity (grid) to reduce grid consumption. In daytime condition, the system will give priority to solar energy and use grid power only when the solar power is insufficient to sustain the load requirement.
Increase the battery lifetime
SMU utilizes four stage battery charging algorithm that enhances the battery lifespan. In bulk stage SMU feeds the battery installed to it a constant boost charging current until its voltage reaches 14.4V and the float current, then in absorption stage it maintains this voltage above 14.2V for 3 hrs.
Automatic/ Manual Operation
The system can work as a domestic inverter and a solar inverter automatically or manually through a switch except in night condition. In night condition, first it will harvests the stored battery energy then it will work as normal domestic inverter.
Inbuilt Protection to Avoid Battery Undercharge and Over-charge
SMU has the capability to charge a solar battery which goes in deep discharge condition. It can charge the battery if the battery voltage during discharge reaches up to 8V per battery. Solar management unit uses four stages to charge the battery i.e. Boost, Absorption, Float and Equalization. This feature protects the battery for being over charged.
Very Low Consumption in Idle State
It have very low idle consumption, in idle state it consumes less than 20mA current which makes it more efficient than any other solar management unit.
Electronic protection
- Over charging Voltage
- Over charging Current
- Under voltage
- Battery reverse polarity protection
- Solar reverse polarity protection
- Reverse current flow at night from battery to solar array
- Over temperature
- Solar Low Voltage
Display Parameter
- Battery - Voltage, Current, Type
- Solar- Voltage, Current
- Mode Selection
- Solar Status – High, Low, Overload, Overheat.
- Saving kWh
- Mains Present – Low, High, Absent
Maximum PV Current
Special Features
There are some special features that given below.
- High Speed and High Performance micro-controller
- High reliability with longer operational life
- Inbuilt protection to avoid battery undercharge and over-charge
- Inbuilt PWM Technology Charge Controller
- Automatic voltage selection for 12V or 24V
- Solar Prioritization
- Compact design with wall mounting
- Eco friendly
General
|
Particulars |
Description |
|
SMU Capacity |
SMU1224/40 |
|
Operating Temperature |
0°C to 50°C |
|
Storage Temperature |
-20° C to 60°C |
|
Battery Type |
Tubular/SMF, Battery 12V/24V |
|
Battery Capacity AH |
100AH – 180AH |
|
Battery charging regulation method |
Bulk, Absorption, Float, Equalise |
Electrical
|
Nominal System Voltage |
12/24 DC |
|
Charging Current (Solar) |
20A-40A |
|
Charge Controller Efficiency |
>95% |
|
Idle Consumption |
<20mA |
|
Operating Solar Input Voltage (VOC) |
22.5V/45V |
|
Max. Solar Input Voltage (VOC) |
25A/45V |
|
Min Solar Input Voltage (VOC) |
15V/30V ± 2% |
|
Solar Panel Recovery Voltage |
17V/31V ± 2% |
|
Max. Solar Current |
40A |
|
Efficiency |
>95% |
Battery Set Point @25 °C
|
Absorption voltage Tubular Battery |
14.2V/28.4V±2% |
|
Absorption voltage SMF Battery |
13.7V/27.4V±2% |
|
Absorption Duration |
3hr |
|
Float Voltage Tubular Battery |
14V/28±2% |
|
Float Voltage SMF Battery |
13.7V/27.0V±2% |
|
Bulk Voltage Tubular Battery |
14.6V/29.2V±2% |
|
Equalise Voltage |
14.9/29.8V±2% |
|
Equalise Duration |
3hr |
|
Equalise Calendar |
28days |
|
Mains reconnect when Solar not Present |
At any Battery Voltage |
|
Mains reconnect when insufficient solar power |
≤ 11.8V/23.6V ± 2% |
|
Mains disconnect when sufficient solar power for Tubular |
≥ 13.8V/27.6V ± 2% |
|
Mains disconnect when sufficient solar power for SMF |
13.7V/27.4V ± 2% |
Physical
|
Fixing |
Wall Mounted |
|
Weight |
1.5Kg |
|
Ingress Protection |
IP-20 |
|
Dimension |
9X6X3 inch |