1. Simple Introduction of JNTECH solar pumping system
JNTECH solar pumping system consists of three main parts: solar panels,
solar pumping inverter, three phase AC pump.
The solar pumping inverter converts DC power produced by solar
panel to AC power which drives AC pump to pump water
from borehole, river, lake etc. to storage device or directly using
in agricuture irrigation or water supply. This kind of system
using solar energy directly without battery storage. System is
working on day time.
UNICEF100HP Solar Water Pumping System was installed in Sadah Yemen
for Irrigation and Village Water Supply for local
people. It solved local water crisis, took big benefit to local
2.Solar Array and Parameters
Total 320pcs 330W Class A crystalline solar panels were used in
this system, total 105.6kw,the connection is 20 strings, each
string 16pcs solar panels. Warranty: 10 years.
|Electrical Characteristics at Standard Test Condition (STC)|
|PV Module Type||Poly Crystalline|
|PV Module Number||RSM72-6-330P|
|Max. Power at STC (Pmax)||330 W|
|Short Circuit Current(Isc)||9.25A|
|Open Circuit Voltage(Voc)||38.1V|
|Max. Power Current (Impp)||8.7A|
|Max. Power Voltage(Vmpp)||38.1V|
|Power Tolerence||0 ~ + 3W|
|STC: 1000W/m2 irridiance, 25℃ cell temperature, AM=1.5|
3. 75kw Solar pumping inverter
♦ Maximum Power Point Tracking (MPPT) for Optimum Solar Performance.
Wide MPPT range from 460~ 850Vdc, makes high efficiency and long
♦ Automatic start and shut off according to solar intensity. No need
manual operation once started.
♦ Soft start controlling in rush current, to avoid motor burning.
♦ IP65 design for outdoor application. Waterproof and against dust
in desert area.
♦ Drive power-matching three phase AC pump. The matching power with
pump is 1:1.for example, 75kw
AC pump, we take 75kw inverter.
♦ LCD screen display.
You can see any parameters from LCD screen, easier for engineer’s
♦ Optional RS485/GPRS communication.
♦ 3 years warranty
Protection of Jntech Solar Pump Inverter
• Auotmatical dry protection or using water level sensor for dry
protection and overflow protection
• Overflow protection
• Short circuit protection
• Reverse polarity protection
• Under-voltage, weak sunshine, over-current, over-load,
shortage-phase output Protection.
• Water level sensor, no need open the cover.
• Inbuilt Outlet Filter to protect inverter and motor.
4. 75kw solar pump inverter parameters
|Max. Input DC voltage||880Vdc|
|Recommended MPPT voltage||460-850Vdc|
|Max. Input DC current||166A|
|Max. MPTT efficiency||99%|
|Number of Strings||2|
|Max. applicable motor output power||75KW|
|Rated output voltage||380-460Vac; 3 phase|
|Output frequency range||50Hz|
|Rated output current||142A|
|Environment temperature||-25ºC-+60ºC; above 60ºC need derate operation|
|Cooling method||Force cooling|
|Altitude||3000m; above 3000m need derate operating|
|compliance||EN50178; IEC/EN62109-1; IEC6180|
6. Pump Specifications
AC three phase 380V, 50Hz, stainless steel submersible pumps with
head 190m, water flow 95m3/h.
Pump, and motor are fully stainless steel AISI 304.Water cooled
motor, no pollution for water.
a, solid grain-or-fiber-free dilute clean non corrosive liquid.
b, Max. liquid temperature is 25℃.
c, pH: 6.5-8.5
d, Max. diving depth:≤70m
e, Motor efficiency 91.9%, pump efficiency 72%
|Outlet||RP 5 inches|
7. Projects Photos
8. Related solar system
Solar Pumping System : 370W to 132kw
Off Grid Solar System for home Using : 1kva to 5kva.