Sunways NTX3000 - Parallel Connection to 2 PV Arrays (NTX 4000;5000;6000); Two MPPTS Connection to 2 PV Arrays or 4 PV Arrays (NTX 4000;5000;6000); Connection to 1 PV Array or 2 PV Arrays (NTX 3000)

5 Electrical connection
28
Parallel Connection to 2 PV arrays
(NTX 4000/5000/6000)
WARNING
When the current from the PV arrays exceeds 17.5 A
DC (NTX 6000), 14.5 A DC (NTX 5000), 11 A DC (NTX
4000), when the array power exceeds the limit for
the single channel (see table in section “10.3 Techni-
cal data”, see page 47, section “10.4 Trip limits/
trip times”, see page 48), or when there is a con-
sistent unbalance of the power between two arrays,
it is necessary to parallel the two inputs.
When the inverter is configured with parallel input,
the current to the 2 input terminals: “PV1±” and
“PV2±” shall be equally distributed in such way to
limit to 17.5A DC (NTX 6000), 14.5A DC (NTX 5000),
11A DC (NTX 4000), the current for each terminal.
To parallel the 2 inputs, 2 AWG 10 cables should be
used to connect the terminal block PV1- and PV2-,
and PV1+ and PV2+ (1 black and 1 red cable).
RS485Ethernet
23
PV
1+
PV
1+
PV
1–
PV
1–
PV
2+
PV
2+
PV
2–
PV
2–
Two MPPTS connection to 2 PV arrays or 4 PV arrays
(NTX 4000/5000/6000)
WARNING
If the inverter configured as two individual MPPTs
connect to two PV arrays, the max current for PV
array shall not exceed 17.5 A DC for each input
channel (NTX 6000), 14.5 A DC (NTX 5000), 11 A DC
(NTX 4000).
If the inverter configured as two individual MPPTs
connect to 4 PV arrays, the max total current for PV
arrays connect terminals “PV1±” or “PV2±” shall not
be exceed 17.5 A DC for each input channel (NTX
6000), 14.5 A DC (NTX 5000), 11 A DC (NTX 4000).
When connect to 2 PV arrays, one array connect
to one pair of terminals “PV1±” and other pair of
terminal “PV1±” should be free. The second array
connect to one pair of terminals “PV2±” and other
pair of terminal “PV2±” should be free.
RS485Ethernet
23
PV
1+
PV
1+
PV
1–
PV
1–
PV
2+
PV
2+
PV
2–
PV
2–
RS485Ethernet
23
PV
1+
PV
1+
PV
1–
PV
1–
PV
2+
PV
2+
PV
2–
PV
2–
Connection to 1 PV array or 2 PV arrays (NTX 3000)
WARNING
If the inverter connect to 1 PV arrays, the max cur-
rent for PV arrays shall not be exceed 17.5 A DC for
the single input channel (NTX 3000).