Grounding The Inverter - Growatt MOD TL3-XH Series Installation & Operation Manual

2. Insert the H-shaped tool and pull it out of the socket.

6.6 Grounding the inverter

The inverter must be connected to the AC grounding conductor of the power
distribution grid via the ground terminal (PE) .
Because of the transformerless design, the DC positive pole and DC
negative pole of PV arrays are not permitted to be grounded.
This inverter complies with IEC 62109-2 clause 13.9 for earth fault
alarm monitoring.
If an Earth Fault Alarm occurs, the fault code "Error 303,NE
WARNING
abnormal" will be displayed on the inverter screen while the LED
indicator red will light up. (Applicable to inverters with graphical
According to the relevant provisions of IEC 61643-32 "Connecting to photovoltaic
devices surge protectors - selection and use of guidelines", whether for household or
commercial photovoltaic power plants, it is necessary to ensure the implementation of
lightning protection measures for photovoltaic systems:
The lightning protection measures for photovoltaic systems shall be
carried out in accordance with the corresponding national
standards and IEC standards. Otherwise, photovoltaic devices
such as components, inverters and power distribution facilities may
be damaged by lightning.
WARNING
In this case, the company does not carry out warranty and assumes
any responsibility.
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Fig 6.13
Fig 6.14
6.6 Active power control with smart meter , or ripple control signal
receiver
The position of export limitation CT or Meter must between the
Inverter & Load and gird and pay attention of the direction.
Information
This series inverter has integrated export limitation functionality. To use this function,
you can connect the Growatt smart meter. For the detailed information, please contact
with Growatt.
Fig 6.15
Active power control with a Radio Ripple Control Receiver(RRCR).
6.7 GFCI(Standard)
6.7.1 Ground Fault Circuit Interrupt(GFCI)
This inverter includes an integrated residual current device .If the leakage current is
over 300mA and last for more than 300ms,the inverter will report 201 fault and the
OLED will display Residual I High.
The inverter has the function of detecting residual current and protecting the inverter
against residual current. If your inverter must equip a AC breaker which has the
function of detecting residual current ,you must choose a Type A RCD breaker with the
rating residual current more than 300mA.
Public Grid
Radio ripple
control receiver
Monitor
Internet
Router
Fig 6.16
PC
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