SUN2000-(55KTL, 60KTL) Series
User Manual
5 Electrical Connections
Issue 02 (2017-07-30)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
36
Do not connect loads between the SUN2000 and the AC switch.
The SUN2000 is integrated with a comprehensive residual current detection unit to
distinguish fault current from residual current. Upon detecting that the residual current
exceeds the threshold, the SUN2000 immediately disconnects from the power grid.
If an AC switch that can detect residual current is installed outside the SUN2000, the residual current
value to trigger the switch should be set greater than 600 mA.
Context
If you connect a ground cable to the ground point on the chassis shell, you are advised to
use a three-core (L1, L2, and L3) outdoor cable.
If you connect a ground cable to the ground point in the maintenance compartment, you
are advised to use a four-core (L1, L2, L3, and PE) outdoor cable.
You need to prepare M8 OT terminals by yourself.
Table 5-1
Cable specifications
Cable Specifications
Copper-Core Cable
Copper-Clad
Aluminum Cable or
Aluminum Alloy
Cable
Conductor
cross-sectional area
(mm
2
)
Range
16–70
25–70
Recomm
ended to
use
25
35
Cable outer diameter
(mm)
Range
37–44
Recomm
ended to
use
40
If you connect a ground cable to the ground point in the maintenance compartment, prepare an M6 OT
terminal by yourself.
Procedure
Step 1
Remove an appropriate length of the jacket and insulation layer from the AC output power
cable using a wire stripper.