Grounding and Isolation transformer settings
Created: Aug 23, 2021 06:18:00Latest reply: Aug 23, 2021 10:19:51
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Hamid_Raza_Naveed
Created Aug 23, 2021 10:15:37
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Hello, but there isn't any option for "input grounded, with transformer" 
gzzz
Reply Hamid_Raza_Naveed Created Aug 24, 2021 01:35:56
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Hello, friend. This problem is caused by different access modes. Input grounding with a transformer: Used when PV modules are grounded. In this scenario, an isolation transformer must be installed. In this case, the N-to-PE voltage must be greater than 30 V.
Hamid_Raza_Naveed
Created Sep 11, 2021 06:35:28
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One of our installer set it to " Input not grounded, with a transformer" because his PV is grounded but after few minutes a fault occurs: Alarm No: 2064 and Cause ID:2 and inverter shut down what could be the issue here?? please guide
gzzz
Reply Hamid_Raza_Naveed Created Sep 11, 2021 07:24:41
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Hello, friend. I think the problem is a setup error. For PV-grounding, an isolation transformer must be connected and set to "Input grounding with transformer" I hope this helps you. Thank you.
Hamid_Raza_Naveed
Reply gzzz Created Sep 11, 2021 07:31:56
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Actually due to abnormal grounding alarm, inverter wasn't producing but as soon as he set the setting to " Input not grounded, with a transformer", inverter start producing and in 25 minutes it shuts down giving the alarm of device fault i mentioned in previous comment with you
Hamid_Raza_Naveed
Reply gzzz Created Sep 11, 2021 07:33:00
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and when that alarm occured he quickly changed setting to " Input not grounded, without a transformer" and then he again had abnormal grounding alarm.
gzzz
Reply Hamid_Raza_Naveed Created Sep 11, 2021 08:19:09
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Hello, friend. In your case, we recommend that you contact the PV Center with the SN number of the inverter and describe the problem you are experiencing. You can send an email to the following email box and they will provide you with support. Europe Email: eu_inverter_support@huawei.com China and Asia Pacific: solarservice@huawei.com Latin America: Email: la_inverter_support@huawei.com I hope this helps you. Thank you.
Hamid_Raza_Naveed
Reply gzzz Created Sep 11, 2021 09:25:52
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One last thing Voltage between neutral and ground is 50V Can I apply Input ground with a transformer?
gzzz
Reply Hamid_Raza_Naveed Created Sep 11, 2021 09:46:56
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Hello, friend. I don't know what you mean. Can you make it clear?
Hamid_Raza_Naveed
Reply gzzz Created Sep 11, 2021 11:21:51
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what i mean is that installer checked that voltage between nuetral terminal and ground terminal (N-PE) is 50V so can he change Isolation configuration to Input ground with a transformer???? 12 |
All Answers
Hamid_Raza_Naveed
Created Aug 23, 2021 10:15:37
(0)
(0)
Hello, but there isn't any option for "input grounded, with transformer"
gzzz
Reply Hamid_Raza_Naveed Created Aug 24, 2021 01:35:56
(0)
(0)
Hello, friend. This problem is caused by different access modes. Input grounding with a transformer: Used when PV modules are grounded. In this scenario, an isolation transformer must be installed. In this case, the N-to-PE voltage must be greater than 30 V.
Hamid_Raza_Naveed
Created Sep 11, 2021 06:35:28
(0)
(0)
One of our installer set it to " Input not grounded, with a transformer" because his PV is grounded but after few minutes a fault occurs: Alarm No: 2064 and Cause ID:2 and inverter shut down what could be the issue here?? please guide
gzzz
Reply Hamid_Raza_Naveed Created Sep 11, 2021 07:24:41
(0)
(0)
Hello, friend. I think the problem is a setup error. For PV-grounding, an isolation transformer must be connected and set to "Input grounding with transformer" I hope this helps you. Thank you.
Hamid_Raza_Naveed
Reply gzzz Created Sep 11, 2021 07:31:56
(0)
(0)
Actually due to abnormal grounding alarm, inverter wasn't producing but as soon as he set the setting to " Input not grounded, with a transformer", inverter start producing and in 25 minutes it shuts down giving the alarm of device fault i mentioned in previous comment with you
Hamid_Raza_Naveed
Reply gzzz Created Sep 11, 2021 07:33:00
(0)
(0)
and when that alarm occured he quickly changed setting to " Input not grounded, without a transformer" and then he again had abnormal grounding alarm.
gzzz
Reply Hamid_Raza_Naveed Created Sep 11, 2021 08:19:09
(0)
(0)
Hello, friend. In your case, we recommend that you contact the PV Center with the SN number of the inverter and describe the problem you are experiencing. You can send an email to the following email box and they will provide you with support. Europe Email: eu_inverter_support@huawei.com China and Asia Pacific: solarservice@huawei.com Latin America: Email: la_inverter_support@huawei.com I hope this helps you. Thank you.
Hamid_Raza_Naveed
Reply gzzz Created Sep 11, 2021 09:25:52
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(0)
One last thing Voltage between neutral and ground is 50V Can I apply Input ground with a transformer?
gzzz
Reply Hamid_Raza_Naveed Created Sep 11, 2021 09:46:56
(0)
(0)
Hello, friend. I don't know what you mean. Can you make it clear?
Hamid_Raza_Naveed
Reply gzzz Created Sep 11, 2021 11:21:51
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(0)
what i mean is that installer checked that voltage between nuetral terminal and ground terminal (N-PE) is 50V so can he change Isolation configuration to Input ground with a transformer???? 12 |
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Please see this image there is no option of input grounded with transformer. The only options are two which can be seen. We can select any option when PV is not grounded?? |
BetterMing
Created Aug 23, 2021 10:55:08
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Yes two options, choose according to the actual one.
gzzz
Created Aug 24, 2021 01:37:47
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Hello, friend. This problem is caused by different access modes. Input grounding with a transformer: Used when PV modules are grounded. In this scenario, an isolation transformer must be installed. In this case, the N-to-PE voltage must be greater than 30 V. When PV is not grounded, choose according to the actual situation
Hamid_Raza_Naveed
Reply BetterMing Created Aug 24, 2021 05:13:54
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can you please elaborate what each options are used for and how they are different from each other 
Ming_Li
Reply Hamid_Raza_Naveed Created Aug 27, 2021 08:06:36
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This is to prevent a safety accident, PV- grounding may cause the inverter to burn out.
Hamid_Raza_Naveed
Reply Ming_Li Created Sep 11, 2021 12:25:04
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Thankyou for your response, let me clarify the scenario here for you. Inverter is 60KTL M0 and inverter is grounded. Now the issue installer is facing that its continuously showing abnormal grounding error and when he checked N-PE voltage it was 50V. Should i ask him to work on his earthing pits performance or changing Isolation configuration to Input not ground with a transformer will solve the issue? |
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