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:

K
Kenneth TownsendSep 6, 2025
What does 'Grid voltage imbalance' mean on my Huawei SUN2000-30KTL-M3 Inverter?
- D
  Debra FarmerSep 6, 2025
  A 'Grid voltage imbalance' alarm on your Huawei Inverter signifies that the difference between power grid phase voltages exceeds the upper threshold. If this alarm occurs occasionally, it may indicate a temporary abnormality in the power grid, and the inverter should recover automatically once the grid returns to normal. However, if the alarm persists, you should first check whether the power grid voltage is within the acceptable range. If it's not, contact the local power operator for assistance. If the voltage is within the acceptable range but the alarm continues for an extended period, inspect the AC output power cable connection. If the cable is correctly connected, yet the alarm persists and impacts the energy yield of the PV plant, you should also contact the local power operator.
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.
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.
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.
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.
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.
N
Nicholas RoachSep 7, 2025
What does 'Unstable grid frequency' mean on a Huawei SUN2000-30KTL-M3 Inverter?
- P
  Paul HannaSep 8, 2025
  An 'Unstable grid frequency' alarm on your Huawei Inverter indicates a power grid exception. The actual change rate of the power grid frequency does not meet the requirements for the local power grid code. If the alarm occurs occasionally, the power grid may be temporarily abnormal, and the inverter will automatically recover after detecting that the power grid becomes normal. If the alarm persists, check whether the power grid frequency is within the acceptable range. If not, contact the local power operator.
C
Carol LangSep 5, 2025
How to deal with 'Low insulation resistance' error on Huawei SUN2000-30KTL-M3 Inverter?
- B
  boydelizabethSep 5, 2025
  If your Huawei Inverter is showing a 'Low insulation resistance' error, it could be due to: ? The PV array being short-circuited with PE. ? The PV string being in a moist environment for a long time, and the circuit not being well insulated to ground. To address this: ? Check the impedance between the PV string and the PE cable. If a short circuit occurs, rectify the fault. ? Check whether the PE cable of the inverter is correctly connected. ? If you've confirmed that the impedance is lower than the specified protection threshold in a cloudy or rainy environment, log in to the app, SmartLogger, or NMS and set the Insulation resistance protection threshold.
E
Eric GallowaySep 2, 2025
What does 'Grid underfrequency' mean for Huawei Inverter?
- E
  eric08Sep 2, 2025
  A 'Grid underfrequency' alarm on your Huawei Inverter indicates a power grid exception. The actual power grid frequency is lower than the requirements for the local power grid code. If the alarm occurs occasionally, the power grid may be temporarily abnormal. The inverter automatically recovers after detecting that the power grid becomes normal. If the alarm persists, check whether the power grid frequency is within the acceptable range. If not, contact the local power operator. If yes, modify the grid underfrequency protection threshold through the app, SmartLogger, or NMS with the consent of the local power operator.
W
Wendy KellySep 3, 2025
What to do if Huawei Inverter shows 'Phase wire short-circuited to PE'?
- S
  Susan FoleySep 4, 2025
  If your Huawei Inverter displays 'Phase wire short-circuited to PE', it means the impedance of the output phase wire to PE is low, or the output phase wire is short-circuited to PE. Check the impedance of the output phase wire to PE to locate the position with low impedance and rectify the fault.

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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