ɲ ©ÑàÑÊÊì²Êªì¯²ÊÝñìÝÑýàÃäȀÊäñàì¯ìì¯üÑÃ쪲ä
within the safe range (lower than 60 V DC) and that the DC switch on the
SUN2000 is OFF. Failing to do so may result in electric shocks.
ɲ w¯Êì¯^kEǂǀǀǀ²äàñÊʲʪȀ²ì²äÊÑìÃÃÑýìÑýÑàÀÑÊ쯲ÊÝñìÝÑýà
cables, such as connecting or disconnecting a PV string or a PV module in a PV
string. Failing to do so may cause electric shocks.
ɲ /©ÊÑWväìà²ÊªÑÊÊìäìѲÊÝñììàɲÊÃÑ©ì¯^kEǂǀǀǀȀÑÊÑìàÉÑü
the watertight cap from the DC input terminals. Otherwise, the IP rating of the
SUN2000 will be čìȇ
Ensure that the following conditions are met. Otherwise, the SUN2000 may be
damaged, or even a Ēà could happen.
ɲ f¯²ÊÝñìüÑÃìªÑ©ì¯^kEǂǀǀǀä¯ÃÃÊÑìĂÉĂ²ÉñɲÊÝñìüÑÃìª
under any circumstance.
ɲ f¯ÝÑÃà²ì²äÑ©Ãìà²ÑÊÊì²ÑÊäàÑààìÑÊ쯲ÊÝñìä²ȇf¯
positive and negative terminals of a PV string connect to corresponding positive
and negative DC input terminals of the SUN2000.
ɲ /©ì¯²ÊÝñìÝÑýàÃäààüàäÃăÑÊÊìȀÑÊÑìÑÝàìì¯
switch as well as positive and negative connectors immediately. Wait until the
night when solar irradiance declines and the PV string current drops to below
0.5 A. Then set the DC switch to the OFF position, remove the positive and
negative connectors, and correct the polarities of the DC input power cables.
ɲ ^²Êì¯ÑñìÝñìÑ©ì¯Wväìà²ÊªÑÊÊììÑì¯^kEǂǀǀǀÊÊÑì
grounded, ensure that the PV module output is well insulated to ground.
ɲ ñà²Êªì¯²ÊäìÃÃì²ÑÊÑ©Wväìà²ÊªäÊì¯^kEǂǀǀǀȀì¯ÝÑä²ì²üÑàʪì²ü
terminals of PV strings may be short-circuited to ground if the power cable is
not properly installed or routed. In this case, an AC or DC short circuit may
occur and damage the SUN2000. The caused device damage is not covered
under any warranty or service agreement.
Figure 5-13 DC input terminals
SUN2000-(2KTL-6KTL)-L1
User Manual 5 Electrical Connection
Issue 03 (2020-09-15) Copyright © Huawei Technologies Co., Ltd. 43
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