7. START UP AND OPERATION
7.1 Safety Check Before Start Up
Please check before switching on any voltage resources connected to the
inverter and closing inverter’s DC switch:
1. Grid Voltage: Check the grid voltage at point of connection at the
inverter complies with permitted range of the inverter.
2. Mounting Bracket: Check if the mounting bracket is properly and
securely installed.
3. Mounting of the inverter: Check if the inverter is properly mounted and
attached to the mounting bracket.
4. DC Connectors: Check if the DC connectors are installed correctly on
terminals.
5. AC Connectors and Wire Assembly: Check if wires are assembled
correctly on the AC side and if the AC connector is properly and securely
installed. Check if the AC connector is firmly plugged into AC terminal.
6. Cables: Check if all cables are reliably connected. Check if the
connections are effective, while the insulations are undamaged.
7. Groundings: Check all groundings using multimeter and if all exposed
metal parts of the inverter are properly grounded.
8. DC Voltage: Check if the largest open-circuit voltage of PV arrays
complies with the permitted range.
9. DC Polarity: Check if the wires from DC voltage resource are connected
to terminals with correct polarity.
10. Grounding Resistance: Check if the grounding resistance of PV strings
>1MOhm using a multimeter.
After all installation and checks, close the AC circuit-breaker, then the
DC switch. The inverter will start to operate when DC input voltage and
grid conditions meet the requirements of inverter startup.
7.2 Inverter LED Indicators
When the inverter operates, LED symbols on display have the
following meanings:
17
16
V.
2
V.
2
