Powering On The System; Powering Off The System - Huawei SUN 2000 Series User Manual

SUN2000-4.95KTL-JPL0
User Manual

6.2 Powering On the System

Prerequisites
Before turning on the AC switch between the solar inverter and the power grid, check that the
AC voltage on the power grid side of the AC switch is within the specified range.
If the DC is on and the AC is off, the solar inverter reports a Grid Loss alarm. The solar
inverter starts normally only after the fault is rectified.
Procedure
Step 1 Turn on the AC switch between the solar inverter and the power grid.
Step 2 Turn on the DC switch between the PV string and the solar inverter if there is any.
Step 3 Turn on the DC switch at the bottom of the solar inverter.
Step 4 For details about quick settings over the SmartLogger, see the SmartACBox 10-In 1-Out
Smart AC Combiner Box Quick Guide.
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6.3 Powering Off the System

Context
After the solar inverter powers off, the remaining electricity and heat may still cause electric
shocks and body burns. Therefore, put on protective gloves and begin servicing the solar
inverter five minutes after the power-off.
Issue 03 (2020-06-03)
Delivering a reset, shutdown, or upgrade command to the solar inverters may cause power
grid connection failure, which affects the energy yield.
Only professionals are allowed to set the grid parameters, protection parameters, feature
parameters, and power adjustment parameters of the solar inverters. If the grid parameters,
protection parameters and feature parameters are incorrectly set, the solar inverters may
not connect to the power grid. If the power adjustment parameters are incorrectly set, the
solar inverters may not connect to the power grid as required. In these cases, the energy
yield will be affected.
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