Huawei SUN2000-4KTL-M1 User Manual (English)

Other manuals for Huawei SUN2000-4KTL-M1

Questions and Answers:

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Shelly WilsonAug 23, 2025
What to do about grid undervoltage on Huawei Controller?
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  Matthew BennettAug 23, 2025
  A grid undervoltage alarm on the Huawei Controller means the grid voltage is below the lower threshold. Here's what you can do: 1. If the alarm is occasional, it might be a temporary grid issue, and the SUN2000 should recover automatically. 2. If the alarm persists, check if the grid voltage is within the acceptable range. If not, contact your local power operator. If it is, you can modify the grid undervoltage protection threshold (with the power operator's consent) using the mobile app, SmartLogger, or NMS. 3. If the alarm continues, inspect the connection between the AC circuit breaker and the output power cable.
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Robert BarberAug 25, 2025
How to troubleshoot grid overvoltage on Huawei Controller?
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  Danielle MortonAug 25, 2025
  A grid overvoltage alarm on your Huawei Controller indicates that the grid voltage exceeds the upper threshold. Try these steps: 1. If the alarm is occasional, it could be a temporary grid issue. The SUN2000 should recover automatically once the grid stabilizes. 2. If the alarm persists, verify that the grid voltage is within the acceptable range. If it's not, contact your local power operator. If it is within range, you can adjust the grid overvoltage protection threshold using the mobile app, SmartLogger, or NMS, but only with the consent of the local power operator. 3. Also, check for peak voltage issues on the power grid; if the problem persists, contact the power operator.
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Aaron WalkerAug 25, 2025
What to do if Huawei Controller reports grid loss?
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  Rebecca ForbesAug 26, 2025
  If the Huawei Controller displays a grid loss alarm, it means a power grid outage has occurred, or the AC circuit is disconnected, or the AC switch is off. The alarm should clear automatically once the power grid recovers. You can also check if the AC circuit is disconnected or if the AC switch is turned off.
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Beth CaseyAug 27, 2025
How to fix high string input voltage on Huawei Controller?
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  Rodney BoothAug 27, 2025
  The high string input voltage on your Huawei Controller indicates that the PV array is not properly configured. Too many PV modules are connected in series, causing the PV string open-circuit voltage to exceed the maximum operating voltage. To resolve this, reduce the number of PV modules connected in series until the PV string open-circuit voltage is within the acceptable range. The alarm should disappear once corrected.
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kevin24Aug 27, 2025
What to do if Huawei Controller shows string reverse connection?
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  nsmithAug 27, 2025
  The 'String reverse connection' error on your Huawei Controller indicates that the PV string polarity is reversed. To fix this, check if the PV string is connected in reverse. If it is, wait until the PV string current drops below 0.5 A, then turn off the DC switch and correct the PV string polarity.
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eileen22Aug 28, 2025
How to resolve DC arc fault on Huawei Controller?
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  mirandawheelerAug 28, 2025
  If your Huawei Controller is showing a DC arc fault, it means the PV string power cables are arcing or have poor contact. Check the PV string cables to ensure they are properly connected and not arcing.
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Samantha AguirreAug 29, 2025
What causes grid overfrequency on Huawei Controller?
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  Danielle LewisAug 29, 2025
  A grid overfrequency alarm on the Huawei Controller indicates that the power grid frequency is higher than the requirements for the local power grid code. Here's what to do: 1. If the alarm occurs occasionally, the power grid may be temporarily abnormal, and the SUN2000 should recover automatically. 2. If the alarm persists, verify that the power grid frequency is within the acceptable range. If it is not, contact your local power operator. If it is within range, you can modify the grid overfrequency protection threshold through the app, SmartLogger, or NMS, but only with the consent of the local power operator.
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Shannon TorresAug 30, 2025
How to fix grid underfrequency on Huawei Controller?
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  Amy LarsonAug 31, 2025
  A grid underfrequency alarm on the Huawei Controller indicates that the power grid frequency is lower than the requirements for the local power grid code. Here's how to address it: 1. If the alarm is occasional, the power grid may be temporarily abnormal, and the SUN2000 should recover automatically. 2. If the alarm persists, check whether the power grid frequency is within the acceptable range. If not, contact the local power operator. If it is, you can modify the grid underfrequency protection threshold using the app, SmartLogger, or NMS, but only with the consent of the local power operator.
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kimberly06Aug 31, 2025
What causes string current backfeed in Huawei Controller?
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  john47Sep 1, 2025
  String current backfeed on your Huawei Controller means the number of PV modules connected in series is insufficient, causing the end voltage to be lower than other strings. Here's how to troubleshoot: 1. Check if the number of PV modules connected in series to this PV string is less than that of other PV strings connected in parallel. If so, wait until the PV string current decreases below 0.5 A, then turn off the DC switch and adjust the number of PV modules in the PV string. 2. Check if the PV string is shaded. 3. Check if the open-circuit voltage of the PV string is abnormal.
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Melissa JonesSep 2, 2025
Why is the grid frequency unstable on my Huawei Controller?
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  Teresa HobbsSep 2, 2025
  An unstable grid frequency alarm on the Huawei Controller indicates the power grid frequency change rate doesn't meet local power grid code requirements. Here's what you can do: 1. If the alarm is occasional, it may be a temporary grid issue, and the SUN2000 should recover automatically. 2. If the alarm persists, check whether the power grid frequency is within the acceptable range. If not, contact the local power operator.

Huawei SUN2000-4KTL-M1 Specifications

General

Max. efficiency	98.4%
European efficiency	97.8%
AC nominal power	4000 W
Operating temperature range	-25°C to +60°C
Max. DC Voltage	600 V
Start Voltage	200 V
Max. Short-Circuit Current per MPPT	18 A
Number of MPPT Trackers	2
Cooling	Natural Convection
Protection Degree	IP65
Output Frequency	50 Hz / 60 Hz
Nominal AC voltage	220 V / 230 V / 240 V
Max. DC Power	6000 W
Rated AC Voltage	230 V