Huawei SUN2000-30KTL-M3 Quick Guide

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HUAWEI TECHNOLOGIES CO., LTD.

SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL,

40KTL)-M3

Quick Guide

Issue: 04

Part Number: 31500EAC

Date: 2021-03-05

Table of Contents

Other manuals for Huawei SUN2000-30KTL-M3

User Manual142 pages

Questions and Answers:

J
Jay SmithSep 1, 2025
What does 'Grid overfrequency' mean on my Huawei SUN2000-30KTL-M3?
- M
  Michael BlakeSep 1, 2025
  A 'Grid overfrequency' alarm on a Huawei Inverter indicates a power grid exception where the actual power grid frequency is higher than the requirements for the local power grid code. If the alarm occurs occasionally, it might be a temporary power grid issue, and the inverter should recover automatically. If the alarm persists, verify that the power grid frequency is within the acceptable range. If it's not, contact the local power operator. If the frequency is within range, consider modifying the grid overfrequency protection threshold via the app, SmartLogger, or NMS, with the consent of the local power operator.
J
John ThomasAug 31, 2025
How to troubleshoot 'Abnormal grounding' on Huawei Inverter?
- T
  Thomas BeanAug 31, 2025
  If you're experiencing 'Abnormal grounding' with your Huawei Inverter, it could be due to: ? The neutral wire or PE cable of the inverter not being connected. ? The output mode set for the inverter being inconsistent with the cable connection mode. To resolve this, power off the inverter (turn off the AC output switch and DC input switch, and wait for a period of time). Then: ? Check whether the PE cable for the inverter is connected properly. ? If the inverter is connected to a TN power grid, check whether the neutral wire is properly connected and whether the voltage of the neutral wire to ground is normal. ? After powering the inverter back on, check whether the output mode set for the inverter is consistent with the output cable connection mode.
D
Daniel RobersonAug 29, 2025
What causes 'String current backfeed' on a Huawei SUN2000-30KTL-M3 Inverter?
- S
  Steven DuncanAug 30, 2025
  The 'String current backfeed' error on your Huawei Inverter is caused by an insufficient number of PV modules connected in series to the PV string, resulting in a terminal voltage lower than that of other strings. To fix this: 1. Check if the number of PV modules connected in series is less than that of other PV strings. If so, wait until the PV string current drops below 0.5 A, turn off all DC switches, and adjust the number of PV modules in the PV string. 2. Check whether the open-circuit voltage of the PV string is abnormal. 3. Check whether the PV string is shaded.
R
ryanvazquezAug 28, 2025
Why is my Huawei Inverter showing 'Grid undervoltage'?
- D
  Dylan WarnerAug 28, 2025
  A 'Grid undervoltage' alarm on your Huawei Inverter means the power grid voltage is below the lower threshold, or the low-voltage duration has exceeded the value specified by LVRT. If the alarm occurs occasionally, the power grid may be temporarily abnormal, and the inverter should recover automatically. If it persists, verify that the power grid voltage is within the acceptable range and contact your local power operator if it's not. If the voltage is within range, you might need to modify the grid undervoltage protection threshold using the app, SmartLogger, or NMS, but only with the consent of the local power operator. Finally, check the AC circuit breaker and AC output power cable if the alarm continues.
J
jeremiah10Aug 27, 2025
Why does my Huawei Inverter show 'Grid overvoltage'?
- P
  parkjesseAug 27, 2025
  A 'Grid overvoltage' alarm on your Huawei Inverter indicates that the power grid voltage exceeds the upper threshold, or the high voltage duration has exceeded the value specified by HVRT. If the alarm is occasional, the power grid may be temporarily abnormal, and the inverter should recover automatically. If the alarm persists, check if the power grid frequency is within the acceptable range, and contact the local power operator if it is not. If the frequency is normal, consider modifying the grid overfrequency protection threshold through the app, SmartLogger, or NMS with the consent of the local power operator. Also, check whether the peak voltage of the power grid is too high, and if the alarm persists long-term, contact the local power operator.
A
Alexander LeeAug 27, 2025
What causes 'String reverse connection' in Huawei SUN2000-30KTL-M3 and how to fix it?
- P
  Pamela SalasAug 27, 2025
  The 'String reverse connection' error in your Huawei Inverter means the PV string polarity is reversed. To resolve this, wait until night when solar irradiance decreases and the PV string current drops below 0.5 A. Then, turn off both DC switches and correct the PV string connection.
C
Charles LeblancAug 25, 2025
What to do if my Huawei SUN2000-30KTL-M3 Inverter displays 'DC arc fault'?
- J
  John CareyAug 26, 2025
  If your Huawei Inverter is showing a 'DC arc fault', it means the PV string power cables are arcing or have poor contact. You should check the PV string cables for arcing or poor connections.
G
gsimpsonAug 23, 2025
Why is my Huawei SUN2000-30KTL-M3 Inverter showing 'High string input voltage'?
- N
  Nicholas BlakeAug 25, 2025
  The 'High string input voltage' error on your Huawei Inverter means the PV array isn't configured correctly. There are too many PV modules connected in series, causing the PV string open-circuit voltage to exceed the inverter's maximum operating voltage. To fix this, reduce the number of PV modules connected in series until the PV string open-circuit voltage is at or below the maximum inverter operating voltage. The alarm should then disappear.

Huawei SUN2000-30KTL-M3 Specifications

General

Model	SUN2000-30KTL-M3
Max. DC Input Voltage	1100 V
Number of MPPTs	3
Rated AC Output Power	30000 W
Max. Output Current	47.8 A
Frequency	50 Hz / 60 Hz
Adjustable Power Factor Range	0.8 leading - 0.8 lagging
Total Harmonic Distortion (THD)	< 3%
Max. Efficiency	98.7%
European Weighted Efficiency	98.4%
DC Connection	MC4
Protection Degree	IP66
Cooling Method	Natural convection
MPPT Voltage Range	200 V - 1000 V
Max. AC Output Power	33000 W
Rated AC Voltage	400 V
AC Voltage Range	320 V - 480 V
Display	LED Indicators
Communication	RS485, WLAN
Operating Temperature Range	-25°C to 60°C
Relative Humidity	0% - 100%
Operating Altitude	4000 m
Weight	43 kg
Dimensions	640 x 530 x 270 mm
Max. DC Input Power	45000 Wp

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