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Growatt SPF5000ES tripping earth


zs1ssm

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Some help please---My Growatt SPF5000ES randomly trips the earth leakage in my db box even with all breakers switched off----Reset everything and then works for about 2 to three days then trips again---Some times if I disconnect the solar input negative and positive then the system would run for weeks before tripping the EL---My installer said that I need to bond the Earth and Neutral at the inverter and my problem will go away---???????????

 

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10 minutes ago, zs1ssm said:

Sorry this only happens when the inverter is supplying the house without Eskom

Maybe your wiring is not quite right. You should feed the inverter AC via a 50 Amp double circuit breaker directly from your mains circuit breaker, then the AC output of your inverter should then connect to your earth leakage. 

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1 hour ago, Antonio de Sa said:

Maybe your wiring is not quite right. You should feed the inverter AC via a 50 Amp double circuit breaker directly from your mains circuit breaker, then the AC output of your inverter should then connect to your earth leakage. 

That is exactly how it is connected----Even with the feed from eskom disconnected it sometimes trips the EL---I did reset now and is running fine---Until the next trip :( ----Do I need to bond the Neutral and earth at the inverter ??

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7 minutes ago, Scorp007 said:

an appliance causing the E/L to trip and not the inverter. 

If the Inverter was the cause then I would also believe it to be a consistent trip when it is running.
As @Antonio de Sastated, the Inverter is bonded internally and you can actually check if the bonding is working as it should by measuring the AC voltage on the Inverter output side between earth and neutral. 

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On 2023/06/05 at 12:13 PM, zsde said:

If the Inverter was the cause then I would also believe it to be a consistent trip when it is running.
As @Antonio de Sastated, the Inverter is bonded internally and you can actually check if the bonding is working as it should by measuring the AC voltage on the Inverter output side between earth and neutral. 

All appliances has been isolated at the DB box (switched off) and as soon as the solar is fed into the inverter then the EL at the db trips--Almost as if the phase between live and neutral goes out because there is no earth connected

 

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