SOLAR TECHNOLOGY SOLUTIONS THAT WORK FOR YOURSOLAR TECHNOLOGY SOLUTIONS THAT WORK FOR YOUR
SPTech is a company engaged in Design, consultancy, integration,
supply, installation, commissioning & maintenance of various solar
products and services.
The company has comprehensive know-how and experience with the
development and implementation of solar power for various purposes.
Based on the rich experience of our manpower in the area of research
and development competence, the company also considers itself as
one of the cutting-edge, integrated quality providers of photovoltaic
We have a long-standing commitment to conducting our business in
compliance with applicable laws and regulations, and in accordance
with the highest ethical principles. This commitment is reinforced with
the values, principles, and business practices that guide our business
Sri Pradhyumna Technologies Pvt. Ltd
Solar Photovoltaic Division
Off Grid and Grid connected
Solar Roof top solar solutions
Solar Invertors and Home Lighting
Conversion of conventional invertor
to Solar support.
Solar Street Light and Garden Light-
Solar solutions for irrigation.
Solar Water heater systems.
#,36, 1st Main, 25th Cross,
Yelahanka, Bangalore –64
Call: 9902340963 , 9972597032, 9902060519
Photovoltaic Projects –ON Grid & OFF Grid
Site selectionSite selectionSite selection
and approvaland approvaland approval
PV Plant De-PV Plant De-PV Plant De-
and Maintenanceand Maintenanceand Maintenance
An ON-Grid or grid-tie solar photovoltaic system is when your
solar photovoltaic system is connected to a utility source or
electrical service provider.
An OFF-GRID or standalone photovoltaic system is when
your solar photovoltaic system is not connected to the utility
grid and you are producing your own electricity via solar ener-
gy. These systems will generally have a battery bank in order
to store the electricity for use when needed.
Solar invertors and Home lighting systems
SOLAR Capacity: 500VA Capacity:800VA Capacity:1000VA Capacity:1000VA
Max Solar Power 300Wp 300Wp 300Wp 600Wp
Load Option 1 Option 2 Option
Option 2 Option 1 Option 2 Option 1 Option 2
Fan 2 2 2 2 3 2 4 2
Tube Light 2 2 5 3 4 4 5 4
TV 1 - 1 - 1 - 1 -
PC - 1 - 1 1 2 1 3
Printer - - - 1 1 1 - 1
SOLAR Capacity: 1000VA Capacity:1400VA Capacity:2000VA
Max Solar Power 960Wp 960Wp 960Wp
Load Option 1 Option 2 Option 1 Option 2 Option 1 Option 2
Fan 4 2 4 3 6 5
Tube Light 5 4 6 3 7 5
TV 1 - 1 - 2 -
PC 1 3 1 3 1 4
Printer - 1 - 1 1 1
DSP based control for high reliability.
Pure Sin wave output
Compact and light weight
High efficiency & longer back up time
Intelligent charging for ensuring maximum battery life
Noiseless operation of fans, lamps and appliances.
10% more energy harvest by using MPPT solar charger
Auto priority logic for solar
No load sleep – if the load is less than 5W, the invertor will go to
Conversion of conventional invertor to solar
The low cost, high efficiency & microcontroller based solar chargers are ideal for low power solar applica-
The microcontroller will sense the battery full charge voltage and will cut-off the battery when it reaches full
charge. It will reconnect the battery if the battery drops to a preset level. The charger will also disconnect the
panel from the battery to avoid the reverse current flow from the battery to panel during night.
This product has a special feature to upgrade any conventional UPS in to solar UPS with first priority given to
solar. The charger has the intelligence to connect & disconnect the AC mains to the UPS depending upon
the battery voltage levels to ensure using solar as primary power & mains only for the emergency.
MODEL NO NS 3012‐SZ NS 3024‐SZ NS 6012‐SZ NS 6024‐SZ
Max. Solar open circuit voltage(Voc) 25V 40V 25V 40V
Max. Solar panel capacity 360Wp 720Wp 720Wp 1440Wp
Max. Battery charging current 30A 30A 60A 60A
Peak charger efficiency 99% 99% 99% 99%
System Voltage (V) 12VDC 24VDC 12VDC 24VDC
Battery full voltage ( Solar charging) 14.5 ± 0.1V 29 ± 0.2V 14.5 ± 0.1V 29 ± 0.2V
Battery voltage ( Mains disconnect) 14 ± 0.1V 28 ± 0.2V 14 ± 0.1V 28 ± 0.2V
Battery voltage ( Mains reconnect) 11.3 ± 0.1V 22.6 ± 0.2V 11.3 ± 0.1V 22.6 ± 0.2V
Recommended battery capacity 1x 200AH 2x 200AH 1x400AH 2x 400AH
LED indication Solar charging, Battery reverse, Panel reverse
Physical termination Solar in & Battery: Terminal block
Mains in : 6A power cord
Mains out: 15A power out let
Solar Charger—Technical Specification
Solar Street Lights
Features PACK 1 PACK 2 PACK 3 PACK 4 PACK 5 PACK 6
Wattage 5.5w/8.5w/10w 15w/18w/20w 25W/28W/30W 40W 60W 80w
CCU 12v, 6A 12V, 10A 12V, 15A 12V, 15A 24V, 25A 24v, 30A
PV Panel 37w 60W 100W 120W 180W 240w
Battery 12v,42AH SMF 12V,75AH 12V, 150AH 12V, 150AH 24V, 120AH 24v, 150AH
Pole (mtr) 3 4 4.75—6 4.75—6 6-8 8– 10
Autonomy 2 Days 2 Days 2 Days 2 Days 2 Days 2 Days
Solar Power LED Street Lights : 5.5W to 80W
Saves 60 to 70% energy when compared to conventional
Highly optimised thermal design for guaranteed LED Life
Dust and Water protection meets IP65 Standards.
High precision constant LED Driver—Greater than 90%
Longer life span, More than 15 Years.
Integrated with Industry leading LED’s of 120 to 150 Lu-
men/watt with LM 80 Certifications.
Microcontroller based, High efficiency PWN based Dusk
to Dawn controller
Solar Pump for Irrigation
Solar water pumping system consists of PV array, solar pump inverter and water pump.
Solar pump inverter with MPPT varying frequency drive (VFD) will give maximum torque even at minimum sunlight.
There is no need of any battery. Solar pump inverter directly drives the pump with high reliability.
The DSP based control will track & extract maximum power from the solar panel so that motor will run at a con-
stant torque for the wide range of intensity of sunlight from morning till evening.
This will give 35% extra energy which results in pumping 35% more water compared with the conventional three
phase inverter. At the same time, it can reduce system cost and maintenance costs.
Solar Pump Invertor
Water supply for remote Villages & Homes
Irrigation of farms & Gardens
Fish ponds & Swimming pools
Surface water pumping for landscaping streams and wa-
Cattle, Livestock watering systems (animal husbandry )
Water treatment projects
Alternate system for water supply to counter grid power
Model NS 1500‐LP NS 3700‐HP NS 5500‐HP NS 7500‐HP
Rated power (W) 1.5 3700 5500 7500
Input voltage range (VDC) 280-430 430-750 430-750 430-750
MPPT Voltage Range (VDC) 300-350 500-600 500-600 500-600
Out put Phase 3 Ph 3 Ph 3 Ph 3 Ph
Rated output Voltage (VAC) 200-220 380-440 380-440 380-440
Rated output Current (A) 10 11 17 22
Efficiency (%) 98
Out put frequency (Hz) 0-50 0-50 0-50 0-50
Max solar array power W) 1.65 4.5 6 8.25
Pump capacity ( HP) 1-2 3-5 5.5-7.5 8-10
Operating temperature 10-50°C
Solar Water Heaters
Better Performance in Winter and cloudy days.
No Scale Formation will occur by using Salt and Hard water.
Compressed PUF Insulated storage tank to retain hot water for more than
Inner tank made of SS316L grade surgical steel used in marine applica-
Strong, Polyester powder coated , rust free metal frame and laminated Out-
Absolute non-mixing and non pressure system to ensure long life of Inner
tank even after salt water and hard Borewelll Water Usage.
All Fasteners are made of SS304 food grade for rust free.
Auxiliary tank is fitted inside of vent withstands high cold water Pressure
also minimizing the mix of Hot and Cold water.
ISI marked 1.5 KW back up heater with Thermo stat (Optional).
Completed 6 years of service with a Prolonged list of Satisfied Customers
High quality tested and tough / Borosilicate glass tubes) Minimum Prod-
uct life span of 25-30 years.