BG 20-40KW On-grid Inverter

BG 20-40KW On-grid Inverter

iMars BG 20-50KW string three phase on grid inverter has been developed by INVT, specially for commercial users and distribute grounded power station. This series adopts the latest technologies and combination of T-type three level topology and SVPWM. It has many outstanding advantages such as power density, modular design, easy installation and maintenance, and highly cost effective. It also provides more flexible system configuration and solutions for distributed PV power station and large PV grounded power plants.


▪ Integrated intelligent DC combiner and surge protection improve system flexibility and lower the system cost.

▪ Max efficiency is up to 98.6%, wide input voltage range, adapt to all kinds of solar panels and string configuration.

▪ Dual MPPTs work independently and allow unbalanced input power. One MPPT maximum input is up to 60% of Max. DC power.

▪ Adopt the latest technologies and combination of T-type three level topologies and SVPWM.

▪ Reactive power control and Power factor adjustable:0.8 leading~0.8 lagging.


▪ IP65 protection level, suitable for various installation environments.

▪ Bus capacitors consist of advanced film capacitors, designed with the latest thermal simulation technology for longer lifespan.

▪ Insurance by well-known international property insurance company (AIG) for Products /Completed Operations Liability Insurance.


▪ AC output power is adjustable between 1-100%.

▪ Smart grid adaptive to meet the requirements of various power grid accesses.

▪ Variety of monitoring modes: APP (one-button registration), large screen data monitoring center, cloud monitoring platform.

▪ Support RS485,GPRS,WIFI, Ethernet.


▪ High power density, small size.

▪ Modular design, easy to maintain.

Max. DC input power (W) 2080000 2600000 3120000 3600000 3800000 4280000
Max. DC input voltage (V) 100000
Starting voltage (V) / Min. opration voltage (V) 300/280
MPPT Range(V) 280 - 800
Number of MPPT /  2/3 2/4
Max. DC current (A) Per MPPT  25x2 30x2 33x2 33x2 33x2 33x2
DC switch Integrated
Rated output power (W) 20000 25000 30000 33000 35000 40000
Max. AC output current(A) 32 40 48 48 48 48
Grid voltage range 3/N/PE,230/400V, (320~460V);  3/N/PE,243/ 3/N/PE,277/
3/N/PE,220/380V, (320~460V) 400V,(357~483V) 480V,(384~552V)
Grid frequency range 50Hz (47~51.5Hz) / 60Hz (57~61.5Hz) 
Power factor -0.8~+0.8 (adjustable)
THDi < 3% (at rated power)
AC output Three-phase (L1, L2, L3, N, PE)/(L1, L2, L3, PE)
Cooling method Smart cooling method
Max. efficiency 98.40% 98.40% 98.50% 98.50% 98.50% 98.60%
Euro-efficiency 98.00% 98.00% 98.00% 98.10% 98.10% 98.20%
MPPT efficiency 99.90%
Protection rating IP65
Self-consumption(at night) (W) <0.5
Topology Transformerless
Operating temperature range -25℃~+60℃(derate after 45℃)
Relative humidity 0~95%, no condensation
Protection PV array insulation protection, PV array leakage current protection, Ground fault monitoring,
Grid monitoring, Island protection, DC monitoring, Short current protection etc.
Noise (dB) < 50
Display 3.5 inches LCD display, support backlit display
LCD language English, Chinese, German, Dutch
Keyboard Integrated
Communication interface RS485 (standard) ;WiFi、Ethernet(optional)
Dimension (H x W x D mm) 660x520x250
Weight (kg) 52
Installation Wall mounting
DC terminal MC4
Grid standard DIN VDE 0126-1-1:2013,VDE-AR-N 4105:2011,DIN VDE V 0124-100:2012, 
IEC 61727(IEC62116),AS/NZS 4777.2:2015,NB/T32004-2013,
IEC 60068-2-1:2007,IEC 60068-2-2:2007,IEC 60068-2-14:2009,
IEC 60068-2-30:2005,IEC 61683:1999,C10/11:2012,G59/3-2:2015,
EN 50438:2013,Leader,ZVRT, PEA
Safe certificate / IEC 62109-1 :2010,IEC 62109-2 :2011,EN 61000-6-2: 2005,
EMC category EN 61000-6-3:2007/A1:2011
Factory warranty (years) 5
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