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Sofar Hybrid 20KTL – Three Phase Inverter

Quick Overview

SOFARSOLAR is one of the subsidiaries of SOFAR Group in China and specializes in R&D, production, sales and service of grid-tied inverters ranging from 1kW to 7.5kW (residential), 10kW to 255kW (commercial) , hybrid inverters ranging from 3kW to 20kw and Amass store battery, etc . SOFARSOLAR is currently known to be one of the top 5 string inverter companies found throughout China. After breaking ground and gaining the reputation of being reliable, efficient, and professional, it has now become one of the famous companies in power storage inverters.


Brand Sofar
Product Code HYD 20KTL-3PH
Warranty 5 years
User Guide Download PDF
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Sofar Hybrid 20KTL-3PH

The Sofar Hybrid 20KTL consists of high efficiency energy resilience—providing a good back-up in case of grid outage. The model maximizes the energy independence through self-consumption. Thsofare maximum PV input power ranges up to 30000Wp (15000 Wp, 15000 Wp).


This solar inverter model has maximum DC voltage of 1000V. It requires around 200V for the startup operation. The nominal DC voltage is 600V. Likewise, the full power voltage range of the MPPT module is 450 to 850 V. Some of the other characteristics of this solar inverter 2021 are;

  • The maximum input current of the module is 25A / 25A.
  • The maximum short current range is 30 / 30 Ampere.
  • The solar inverter consists of two MPP Trackers (two strings).

Battery Working

There are two battery input in the Sofar solar inverter 20KTL dedicated for lithium-ion. As being the best solar inverter in Pakistan, the charging strategy for the battery is self-adaption to BMS. The peak charging and discharging current duration of this solar inverter 2021 is 70Amps (35A, 35A), in 60 seconds. Other characteristics regarding battery input data are;

  • The solar inverter model uses CAN (RS485)>/td> as the communication interface.
  • The nominal charging/discharging power ranges up to 20000W.
  • The maximum charging/discharging current ranges up to 50A (25A, 25A).
  • The battery voltage of this hybrid solar inverter ranges from 180V to 800V—for full load, it ranges from 400V to 800V.

Related: Infini VII 3K Hybrid Solar Inverter (With Energy Storage)


Sofar hybrid solar inverter output a nominal AC power of 20000W. Likewise, it can output a maximum AC power of 22000VA to the utility without making any much noise—on the other hand, the maximum AC power from the utility grid ranges up to 40000 VA. The max current from the inverter to the utility grid ranges up to 32 amperes. Likewise, ac current maximum ratio from the utility grid is 58 amperes. The grid voltage range is 184Vac-276Vac. On the other hand, the frequency range of the solar inverter’s grid is 50hz/60hz.


The Sofar is known for manufacturing satisfyingly efficient solar inverter models—while ensuring an extremely minimal loss of energy during the conversion. The MPPT module and has an DC to AC conversion efficiency of 99.9%—with maximum battery charging/discharging efficiency of 97.8%. Although astonishing about the 20kw or 10Kw solar inverter price in Pakistan, at Maxpower, you’ll find them affordable!

Protective Features

Sofar Hybrid Solar Inverter is robust model containing a variety of advanced protective features—the safety of whole solar system is a sole responsibility of the manufacturers, as being the best solar inverter 2021, these features make sure there is no damage situation in any mean. These are;

  • PV reverse polarity protection to make sure no harm to system if there is a sudden change in polarity.
  • Output over current & voltage protection.
  • Anti-islanding protection, insulation resistor and residual current detection.
  • The solar inverter likewise contains DC switch and battery reverse protection.


Frequently Asked Questions

Do solar inverters go offline at night?

A solar inverter converts DC to AC, this means the appliances in the houses are provided normal current through the solar inverter. Thus, leaving the solar inverter on at night would not interrupt; settings of different devices (clocks, alarms, ovens etc.) If you plan to have continuous don’t set them to go offline.

How long does a solar inverter last?

The lifetime of a solar inverter mainly depends on the quality of inverter module, environment, and maintenance. The typical lifespan of an economical model is 10-12 years. These are some models that comes with up to 5 years warranty;

Technical Specification

Battery Input Data
Battery Type Li-ion
No. Of Battery Input 2
Battery Voltage Range 180V – 800V
Battery Voltage Range For Full Load 400V – 800V
Nominal Charging / Discharging Power 20000W
Max. Charging / Discharging Current 50A (25A, 25A)
Peak Charging / Discharging Current Duration 70Amps (35A, 35A), 60s
Charging Strategy For Battery Self Adaption to BMS
Communication Interfaces CAN (RS485)>/td>
PV String Input Data
Recommended Max. PV Input Power 30000Wp (15000Wp, 15000Wp)
Max DC Voltage 1000V
Startup Operating Voltage 200V
MPPT Voltage Range 180V-960V
Nominal DC Voltage 600V
Full power MPPT Voltage Range 450V-850V
Max. Input Current 25A / 25A
Max. Short Current 30A / 30A
No. of MPP Trackers 2
No. Of Strings / MPP Tracker 2
AC OUTPUT Data (On-grid)
Nominal AC Power 20000W
Max. AC Power Output To Utility Grid 22000VA
Max. AC Power from Utility Grid 40000VA
Max. AC Current Output To Utility Grid 32A
Max. AC Current from Utility Grid 58A
Nominal Grid voltage 3/N/PE, 220V/380Vac, 230V/400Vac
Grid Voltage Range 184Vac-276Vac
Nominal Grid Frequency 50Hz/60Hz
Grid Frequency Range 45Hz-55Hz/54Hz-66Hz
Output Power Factor ~(0.8 leading to 0.8 lagging)
Output THDi (@Nominal Output) <3%
AC OUTPUT Data (Backup)
Nominal Output Power 20000W
Max. Output Power 22000VA
Peak Output Power, Duration 22000VA, 60s
Max. Output Current 32A
Peak Output Current, Duration 32A, 60s
Nominal Output voltage 3/N/PE, 220V/380Vac, 230V/400Vac
Nominal Output Frequency 50Hz/60Hz
Output THDv (@Liner load) <3%
Switch Time <20ms
MPPT Efficiency 99.90%
Euro Efficiency 97.7%
Max. Efficiency 98.2%
Max. Battery Charge / Discharge Efficiency 97.8%
DC switch Yes
PV Reverse Polarity Protection Yes
Output Over Current Protection Yes
Output Over Voltage Protection Yes
Anti Islanding Protection Yes
Residual Current Detection Yes
Insulation Resistor Detection Yes
Surge Protection Level II
Battery Reverse Protection Yes
General Data
Dimension 571.4*515*264.1mm
Weight 37kg
Inverter Topology Transformerless
Standby Self Consumption <15W
Operating Temperature Range -30° ~ +60°
Relative Humidity 0~100%
Noise <45dB
Operating Altitude <4000m
Cooling Forced Airflow
Protection Degree IP65
DC Terminal MC4
Grid AC Terminal 5P Connector
Backup AC Terminal 5P Connector
Display LCD Display
Monitoring Interfaces Bluetooth / RS485 / WiFi / GPRS (optional)
Parallel Operation Yes
Standard Warranty Standard 5 Years
EMC EN 61000-6-1, EN 61000-6-3
Safety standards IEC62109-1/2, NB-T32004/IEC-62040-1
Grid standards AS/NZS 4777, VDE V 0124-100, V 0126-1-1, VDE-AR-N 4105, CEI 0-21 / CEI 0-16, EN50549, G98/G99, UTE C15-712-1