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System Commissioning
8.2 Powering on the System
Step 1: This step differs with or without X3-Matebox G2.
Without X3-Matebox G2
Turn on the AC breaker and check whether the LCD screen lights on. If the LCD
screen is not on, turn off the AC breaker and check whether the Grid cable is
conected correctly and securely.
L1
L2
L3
N
PE
L1
L2
L3
N
EPS
Grid
Main breaker
AC breaker
Loads
Grid
Figure 8-1 Turning on AC breaker
With X3-Matebox G2
»
Ensure that the inverter DC switch, the inverter system BUTTON and the
main breaker between X3-Matebox G2 and the power grid are turned off.
»
Turn on the Grid(INV) breaker, the EPS(INV) breaker, the Grid breaker and the
load breaker in the matebox.
»
Turn on the main breaker. Check whether the LCD screen lights on. If the
LCD screen is not on, turn off the main breaker and check whether the Grid
cables between the two devices and between the matebox and the power
grid are conected correctly and securely.
»
Lock the enclosure of X3-Matebox G2.
Step 2: Turn on the inverter DC switch and check the LCD screen, refer to “PV1 and PV2”
to check the PV voltage . If the PV voltage is 0, turn off the DC switch, pull out the
PV connetors, and then measure the voltage of the positive and negative PV port
(in MPPT voltage range 110-950 V) or check whether the positive and negative
poles of PV cables are reversed.
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