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SAJ / Inverters

SAJ 20kW 3-Phase LV Hybrid Inverter

Manufacturer reference: H2-20K-LT2, a 20kW three-phase low-voltage hybrid inverter with 40–60V batteries, two MPPTs, 75A bypass and generator / smart load energy management. Confirm AJ Solar’s supplied model before ordering.

PKR 708,000

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  • 40kWp maximum PV array
  • 40–60V battery connection
  • 75A bypass / whole-home backup
  • Up to 10 units in parallel
  • 100% unbalanced output; each phase up to 50% rated power
  • IP66 and touch LCD

Product overview

Brand
SAJ
Model
H2-20K-LT2 · manufacturer reference
Capacity
20 kW
System type
Hybrid
Warranty
Confirm with AJ Solar
Availability
Confirm on WhatsApp

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Specifications are taken from the manufacturer’s product information for the model shown. Your quotation will confirm the supplied configuration, compatible equipment and local warranty coverage.

ENGINEERING DETAILS

Technical specifications

H2-20K-LT2 · manufacturer reference · Select a section to view its specifications.

Manufacturer reference
Reference model
H2-20K-LT2
Reference status
Exact AJ Solar stock model to be confirmed
Phase
Three phase
Battery voltage class
Low voltage
Manufacturer document
H2-(8–20K)-LT2 EN-APAC V1.2, 10 July 2026
Manufacturer document region
APAC
DC input
Maximum PV array power at STC
40000 Wp
Maximum PV input power
32000 W
Maximum PV input voltage
1000 V
MPPT voltage range
160–950 V
Start-up DC input voltage
150 V
Rated DC input voltage
720 V
Maximum DC input current
40 / 40 A
Maximum DC short-circuit current
50 / 50 A
MPP trackers / strings per MPPT
2 (2 / 2)
DC current injection — source PV row
Integrated DC switch (as printed)
Battery parameters
Battery type
Lead-acid or LiFePO4
Battery voltage range
40–60 V
Maximum charging / discharging current
350 A
Number of battery inputs
2
Charging strategy for Li-ion battery
Self-adaptation to BMS
AC output — on-grid
Rated AC output active power
20000 W
Maximum AC output apparent power
22000 VA
Rated output voltage
380 / 400 V AC
Rated AC output current
30.3 A
Maximum AC output current
33.4 A
Bypass current
75 A
Power factor adjustment range
0.8 leading to 0.8 lagging
Rated AC voltage / range
3L / N / PE; 220 / 380 V, 230 / 400 V
Rated output frequency / range
50 / 60 Hz; 45–55 / 55–65 Hz
Total harmonic distortion THDi
<3%
DC current injection
<0.5% In
AC output — backup
Maximum AC output apparent power
20000 VA
Maximum AC output current
30.4 A
Peak power off-grid
2 × rated power for 10 seconds
Rated AC voltage / range
3L / N / PE; 220 / 380 V, 230 / 400 V
Rated output frequency / range
50 / 60 Hz; 45–55 / 55–65 Hz
Switching time
<10 ms
Total harmonic distortion THDv at linear load
<3%
System
MPPT efficiency
>99.9%
Maximum efficiency
98.5%
European efficiency
98.0%
Noise
<55 dB
HMI
LED and LCD
Communication
CAN, RS485; Wi-Fi standard; 4G / LAN optional
Installation style
Wall mounted
Protection
DC polarity reverse connection protection
Integrated
AC output overcurrent protection
Integrated
Thermal protection
Integrated
AC output overvoltage protection
Integrated
AC output short circuit protection
Integrated
DC component monitoring
Integrated
Overvoltage load drop protection
Integrated
Ground fault current monitoring
Integrated
Power network monitoring
Integrated
Island protection monitoring
Integrated
Earth fault detection
Integrated
DC terminal insulation impedance monitoring
Integrated
Residual current (RCD) detection
Integrated
Arc fault circuit interrupter
Optional
Surge protection level
Type II DC; Type II AC
Environment
Protection degree
IP66
Cooling
Smart cooling
Operating temperature range
−30°C to +65°C; derating above +45°C
Operating humidity
0–100%, non-condensing
Operating altitude
4,000 m; power derating above 3,000 m
Overvoltage category
DC Type II; AC Type III
Mechanical data
Cabinet size (W × H × D)
470 × 740 × 270 mm
Weight
53 kg
Standards
Safety standard
IEC / EN 62109-1/2; EN IEC 62040
EMC standard
IEC / EN 61000-6-1/2/3/4
Grid standard
IEC 61727; IEC 62116; CEI 0-21; EN 50549; NRS 097; RD 140; UNE 217002; OVE-Richtlinie R25; G99; VDE-AR-N 4105
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