Huawei SUN2000 Series User Manual page 49

SUN2000-(196KTL-H0, 200KTL-H2, 215KTL-H0)
Series
User Manual
Wiring Description of Y-branch Connectors
● Y-branch connectors can be purchased from Huawei or the manufacturers
based on the following recommended models: If the rated current of the fuse
of the Y-branch connector is 15 A, the recommended model is 904095944
(Luxshare) or A040959443039 (Comlink); if the rated current of the fuse of the
Y-branch connector is 20 A, the recommended model is 904095945 (Luxshare)
or A040959453039 (Comlink).
● When connecting cables to recommended Y-branch connectors, ensure that the
connectors to be paired match each other and are from the same
manufacturer. Otherwise, the contact resistance of the connectors may exceed
the allowed value. In this case, the connectors may be heated and oxidized,
which may cause faults.
● Ensure that the locking nuts of all connectors are tightened.
● Do not bind more than three fuse enclosures together. Otherwise, the fuses and
their enclosures may be damaged due to overheating. It is recommended that a
clearance of 10 mm or more be reserved between fuse enclosures. You are
advised not to bind the fuse enclosures with other heat emitting conductors.
● Do not place the Y-branch connector harness on the ground. A safe distance
must be reserved between the Y-branch connector harness and the ground to
avoid impact caused by water on the ground to the harness.
● It is recommended that the Y-branch connectors be connected from the PV
string side and tied to the PV trackers.
● The DC input terminals of the solar inverter are prone to damage under stress.
When Y-branch connectors are connected to the solar inverter, bind and secure
the connectors to minimize stress on the DC input terminals. For details, see
Securing Y-Branch
Wiring rules:
1.
2.
Issue 07 (2021-07-08)
NO TICE
Connectors.
The PV+ on the string side must be connected to the PV+ on the SUN2000
side, and the PV– on the string side must be connected to the PV– on the
SUN2000 side.
Preferentially and evenly connect the Y-branch connectors to the MPPTs
controlled by DC SWITCH 1 or DC SWITCH 2.
Number of Y- Recommended
branch MPPT to Be
Connector Connected
Sets
1 MPPT1
3 MPPT1, MPPT3 and
MPPT4
Copyright © Huawei Technologies Co., Ltd.
5 Electrical Connections
Number of Y- Recommended
branch MPPT to Be
Connector Connected
Sets
2 MPPT1 and MPPT4
4 MPPT1, MPPT3,
MPPT4 and MPPT6
A
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