Huawei SUN2000-196KTL-H0 User Manual page 46

SUN2000-(196KTL-H0, 200KTL-H2, 215KTL-H0)
User Manual
Wiring Description of Y-branch Connectors
● Y-branch connectors can be purchased from Huawei or the manufacturers
● Do not use Y-branch connectors that are not recommended.
● When connecting cables to recommended Y-branch connectors, ensure that the
● When the Y-branch connector is used with the MC4 EVO2 contacts, you are
● Ensure that the locking nuts of all connectors are tightened.
● Do not bind more than three fuse enclosures together. Otherwise, the fuses and
● Do not place the Y-branch connector harness on the ground. A safe distance
● It is recommended that Y-branch connectors be connected from the PV string
● The DC input terminals of the solar inverter are prone to damage under stress.
Wiring rules:
1.
2.
3.
Issue 02 (2020-10-30)
NO TICE
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).
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.
advised to use the 32.6020-22100-HZ (Staubli) crimping tool. You can also use
the PV-CZM-22100 (Staubli) crimping tool. When choosing PV-CZM-22100
(Staubli), do not use the locator. Otherwise, the metal contacts would be
damaged.
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.
must be reserved between the Y-branch connector harness and the ground to
avoid impact caused by water on the ground to the harness.
side or connected to the solar inverter with a safe distance of at least 4 m and
bound to the PV support.
When Y-branch connectors are connected to the solar inverter, bind and secure
the connectors to prevent the DC input terminals from bearing stress. For
details, see A Securing Y-Branch
A maximum of one set of Y-branch connectors can be used for each MPPT.
The PV+ on the inverter side must be connected to the PV+ on the PV string
side, and the PV– on the inverter side must be connected to the PV– on the
string side.
Preferentially and evenly connect the Y-branch connectors to the MPPTs
controlled by DC SWITCH 2 or DC SWITCH 3.
Copyright © Huawei Technologies Co., Ltd.
Connectors.
5 Electrical Connections
39