4
1.5
Maintenance Safety
Risk of inverter damage or personal injury due to incorrect service!
•
Before any service work, first disconnect the grid-side AC circuit breaker and
check the inverter status. If the inverter indicator is off, please wait until night to
disconnect the DC switch. If the inverter indicator is on, directly disconnect the
DC switch.
•
After the inverter is powered off for 5 minutes, measure the voltage and current
with professional instrument. Only when there is no voltage nor current can op-
erators who wear protective equipment operate and maintain the inverter.
•
Even if the inverter is shut down, it may still be hot and cause burns. Wear pro-
tective gloves before operating the inverter after it cools down.
Touching the power grid or the contact points and terminals on the inverter con-
nected to the power grid may lead to electric shock!
•
The power grid side may generate voltage. Always use a standard voltmeter to
ensure that there is no voltage before touching.
To prevent misuse or accidents caused by unrelated personnel: Post prominent
warning signs or demarcate safety warning areas around the inverter to prevent
accidents caused by misuse.
To avoid the risk of electric shock, do not perform any other maintenance opera-
tions beyond this manual. If necessary, contact SUNGROW for maintenance. Oth-
erwise, the losses caused is not covered by the warranty.
1.6
Disposal Safety
Please scrap the inverter in accordance with relevant local regulations and stand-
ards to avoid property losses or casualties.
User Manual
Summary of Contents for SG250HX-US
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