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DSP 3320i-ODS, DSP 3325i-ODS, DSP 3333i-ODS
User manual
4.3 Connecting AC Output Power Cables
Connect the DASS TECH inverter to the AC power distribution frame (PDF) or electrical grid
using AC output power cables.
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.
Caution
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.
Table4-1
Type
DSP 3320i-ODS
≥
Cable(Copper)
10mm²
40A
Breaker
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
Multi core copper wire
The impedance of grid-tied should be less than 0.85ohm. To
insure reliable anti-islanding function,user should choose PV
≥10
Multi core copper wire
mm²
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.
Table4-2
The cable
cross-sectional
area(mm²)
DSP 3320i-ODS
10
30
13
49
AC side installation procedure
DASS TECH inverter is a three-phase output inverter, strictly comply with local grid-
connection requirements and safety standards.
DSP 3325i-ODS
DSP 3333i-ODS
≥
≥
10mm²
12mm²
50A
63A
≤
≤
Ifn
300mA,0.1S.
The maximum length(m)
DSP 3325i-ODS
DSP 3333i-ODS
27
27
44
44
DSP 3320i-ODS, DSP 3325i-ODS, DSP 3333i-ODS
User manual
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
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
27
28
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