EVVO 20000TLG23P~EVVO 33000TLG23P
EVVO 20000TLG23P~EVVO 33000TLG23P
13
14
100
98
96
94
92
90
88
86
5% 10% 20% 30% 40% 50% 60% 75% 80% 90% 100%
% of Rated Output Power
2.3 Protection modules
A.
Anti-islanding
In the event of a local grid outage by the electricity company, or when the equipment in the grid side is switched
off for
maintenance operations, the inverter must be physically disconnected safely, to ensure protection of people
working on the grid, all in accordance with the relevant national standards and laws. To prevent possible
islanding, the inverter is equipped with an automatic protective disconnection system called “Anti-Islanding”.
B.
RCMU
The inverters are equipped with a redundancy current device to monitor ground leakage current sensitive to all
components of both direct and alternating current. When the steady-state leakage current is larger than 300mA or
instant leakage current is higher than 30mA/60mA /150mA, inverter will disconnect the grid in different time
delay.
C.
Grid monitoring
Continuous monitoring of the grid voltage to ensure the voltage and frequency values stay within operating
limits.
D.
Inverter internal device protection
The inverter has all kinds of internal protection to protect the from input DC side have
abnormal situation.
E.
Ground fault protection
This inverter must be used with panels connected with “floating” connections, that is, with positive and negative
terminals without ground connections
，
or it may damage the inverter. An advanced ground fault protection
circuit continuously monitors the ground connection and disconnects the inverter when a ground fault is detected.
The ground fault condition is indicated by a red LED on the front panel.
2.4 Efficiency and derating curve
Efficiency curve
Input voltage derating curve
EVVO 20000TLG23P~EVVO 33000TLG23P outputs 230V AC/50Hz
Output voltage derating curve
Vpv=450V
Vpv=600V
Vpv=800V
EVVO 20000TLG23P~EVVO 33000TLG23P outputs 230V AC/50Hz
Output Power vs Input Voltage
40000
35000
30000
25000
20000
15000
10000
0
250 350 440 500 600 700 850 900 950
Vin(V)
Output Power vs Grid Voltage
40000
36000
32000
28000
24000
20000
16000
12000
8000
4000
0
180 190 200 210 220 230 240 250 260 270 280 290 300 310 320
Vgrid(V)
E
ff
ic
ien
c
y
[%
]
Out
p
ut
P
ow
er(W
)
Out
p
ut
P
ow
er(W
)
