75
76
Efficiency
Max. efficiency
98%
98%
Euro-eta
97.5%
97.5%
MPPT efficiency
99.5%
99.5%
Protection devices
DC reverse polarity
protection
yes
yes
DC switch for each MPPT
yes
yes
Output over current protection
yes
yes
Output AC overvoltage
Protection - Varistor
yes
yes
Ground fault monitoring
yes
yes
Grid monitoring
yes
yes
Integrated all-pole sensitive
leakage current monitoring unit
yes
yes
Features
DC connection
H4/MC4(opt)
H4/MC4(opt)
AC connection
Screw terminal
Screw terminal
Display
LCD
LCD
Warranty: 5 years / 10 years
yes /opt
yes /opt
Certificates and approvals
V D E - A R - N 4 1 0 5 , B D E W , C E I 0 - 2 1 , R D 1 6 6 9 ,
VDE 0126-1-1, G59, IEC 62109, CE, AS4777, AS/NZS 3100, etc.
General data
Dimensions (W / H / D) in mm
490/740/235 mm
19.3/29.1/9.3inch
490/740/235 mm
19.3/29.1/9.3inch
Weight
41kg/90.4lb
41kg/90.4lb
Ambient temperature range
–
25 °C~+60 °C
(–
13 °F~+140 °F)
With derating above 45 °C (113 °F)
–
25 °C~+60 °C
(–
13 °F~+140 °F)
With derating above 45 °C (113 °F)
Noise emission (typical)
≤
55 dB(A)
≤
55 dB(A)
Altitude
2000m(6560ft) without derating
Self-consumption night
<
0.5 W
<
0.5 W
Topology
Transformerless
Transformerless
Cooling concept
Smart cooling
Smart cooling
Environmental Protection
Rating
Ip65
Ip65
Relative humidity
0~100%
Non-condensing
0~100%
Non-condensing
Model
Growatt 18000UE
Growatt 20000UE
Specification
DC input data
Max. DC power
19800W
22000W
Max. DC voltage
1000V
1000V
Start DC voltage
350V
350V
DC voltage range
180V~1000V
180V~1000V
MPP voltage
range/nominal voltage
300V~1000V/600V
300V~1000V/600V
Full load DC voltage range
400V~800V
400V~800V
Max. DC current
(input A/input B)
23A/23A
26A/26A
Max. short-circuit
current per string
20A
20A
Max. number of
parallel strings
2/3
2/3
Interfaces: RS232/R485/
Ethernet/RF/WiFi
yes/yes/
opt/opt/opt
yes/yes/
opt/opt/opt