PE N
T
S
R
PE N
T
S
R
55(PE)
12
55(PE)
12
AC side installation procedure
20~33KTL-G2 is a three-phase output inverter, strictly comply with local grid-connection
requirements and safety standards.
Step 1
Open the AC connector cover
.
Figure4-5 Open the cover schematic diagram
Step 2
Remove the insulation layer of an appropriate length according to figure 4-6, then
insert the AC output cable though the PG waterproof cable gland.
Figure4-6 AC Output Cable schematic diagram
Context
All the AC output cables used for the inverters are outdoor five-core cables. To facilitate the
installation, use flexible cables . Table 4-1 lists the recommended specifications for the cables
and the breakers.
4.3 Connecting AC Output Power Cables
Connect the 20~33KTL-G2 to the AC power distribution frame (PDF) or electrical grid using AC
output power cables
.
The impedance of grid-tied should be less than 0.85ohm. To
insure reliable anti-islanding function,user should choose PV
specified cable to make sure the power loss less than 1% of rated
power.The grid-tied point should be less than 150m. Check the
table 4-2 for AC cable specification and maximum length for each
model.
Multi core copper wire
mm²
≥
10
Multi core copper wire
Caution
It is not allowed for several inverters to use the same circuit breaker.
It is not allowed to connect loads between inverter and circuit breaker.
Table4-1
Note: For the sake of safety, please make sure to use correctly sized cables, otherwise the current makes the cable overheat or
overload, even cause a fire.
The leakage current of micro breaker should be 100mA
≤
Ifn
≤
300mA,0.1S.
Step 3
Connecting the AC output power cable: The AC output cable(R,S,T,N and PE) is
connected to the terminal block, as shown in figure 4-7
.
Figure4-7 Cable connection schematic diagram
Table4-2
27
28
Cable(Copper)
Breaker
20000TL-G2
10mm²
≥
40A
10mm²
≥
12mm²
≥
50A
63A
Type
30
49
27
27
44
44
10
13
The cable
cross-sectional
area(mm
²
)
The maximum length(m)
12mm²
≥
63A
23
38
25000TL-G2
30000TL-G2
33000TL-G2
20000TL-G2
25000TL-G2
30000TL-G2
33000TL-G2
20~33KTL-G2
User manual
20~33KTL-G2
User manual
