Huawei SUN2000-50KTL-JPM0 - Checking Spot-Check Terminal Signals

SUN2000-(50KTL-JPM0, 50KTL-JPM1, 63KTL-JPM0)
User Manual
8 Maintenance
Issue 01 (2018-09-30)
Copyright © Huawei Technologies Co., Ltd.
90
Item
Check Method
Maintenance
Frequency
Electrical
connections

Check that cables are securely
connected.

Check that cables are intact, in
particular, the parts touching the
metallic surface are not scratched.

Check that the unused COM, USB,
and RESERVE ports are covered by
watertight caps.
The first inspection is six
months after the initial
commissioning. From
then on, the interval can
be six or twelve months.
Grounding
reliability
Check that ground cables are securely
connected.
The first inspection is six
months after the initial
commissioning. From
then on, the interval can
be six or twelve months.
8.2 Checking Spot-check Terminal Signals
The spot-check terminal signal measures the protection time of the AC relay, resistance of PV
string input to ground, and the resistance of the SUN2000 DC side input to ground.
Figure 8-1 Spot-check terminal