Huawei SUN2000-100KTL Series User Manual page 70

SUN2000-(100KTL, 110KTL, 125KTL) Series
User Manual
Number
of PV
Strings
17
19
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.
Cable connection rules:
Issue 07 (2020-09-15)
Terminal Selection
PV1–PV8, PV10, PV12, and
PV14–PV20
PV1–PV10 and PV12–PV20
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
Copyright © Huawei Technologies Co., Ltd.
Number Terminal Selection
of PV
Strings
18 PV1–PV8, PV10, and PV12–
PV20
N/A N/A
Connectors.
5 Electrical Connections
62