Huawei SUN2000-28KTL - User Manual

Other manuals for Huawei SUN2000-28KTL

Questions and Answers

J
Jim TaylorSep 4, 2025
How to fix DC Over Voltage on Huawei Inverter?
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  Lindsey SimmonsSep 4, 2025
  If your Huawei Inverter SUN2000 is showing a DC Over Voltage alarm, it means the voltage from your PV modules is too high. To fix this, you need to reduce the number of PV modules connected in series for each PV string (1 and 2, 3 and 4, or 5 and 6) until the open-circuit voltage is at or below the inverter's maximum input voltage. Once you've adjusted the PV array configuration, the SUN2000 alarm should disappear.
T
tami25Sep 2, 2025
What to do if Huawei SUN2000-28KTL Firmware Upgrade Failed?
- Z
  Zachary JenkinsSep 2, 2025
  A Firmware Upgrade Failed error on a Huawei Inverter means the upgrade process was incomplete. Upgrade again.
W
William DaltonSep 1, 2025
What does System Fault mean on my Huawei Inverter?
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  pwilliamsSep 1, 2025
  A System Fault on the Huawei Inverter indicates an unrecoverable fault has occurred on a circuit inside the inverter. Flip the DC SWITCH on the inverter to OFF, wait 5 minutes, and then flip the DC SWITCH to ON. Check if the fault is rectified.
A
Aaron MyersAug 31, 2025
What to check for Electrical Grounding Fault on Huawei SUN2000-28KTL Inverter?
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  John PowellAug 31, 2025
  An Electrical Grounding Fault on the Huawei Inverter indicates that the neutral wire or PGND cable is not properly connected to the inverter. Ensure that the neutral wire and PGND cable are correctly connected.
P
Preston BerryAug 30, 2025
What causes String 1-6 Abnormal error on Huawei Inverter?
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  dunnchristopherAug 30, 2025
  The Huawei Inverter displays 'String 1-6 Abnormal' when PV strings have been shielded for a long time or have deteriorated. Check if the output current of a PV string is obviously less than the output current of other PV strings. Also, check whether the PV string is shielded.
P
patriciaruizAug 29, 2025
Why is my Huawei Inverter showing Cabinet Over-Temp?
- G
  Gary GomezAug 30, 2025
  If the Huawei Inverter displays 'Cabinet Over-Temp', it means the inverter is installed in a place with poor ventilation. Check if the ambient temperature exceeds the upper limit. If it does, improve ventilation to decrease the temperature.
T
Thomas Ramirez DDSAug 28, 2025
What causes DC Bus Voltage Fault in Huawei Inverter?
- B
  Bradley MartinAug 29, 2025
  A DC Bus Voltage Fault on your Huawei Inverter means abnormal external conditions have triggered DC circuit protection. This can happen if the inverter input is suddenly disconnected or shielded PV strings cause a sharp change in output power (Reason ID = 3), or if the input energy can't vent quickly due to a sharp change in grid voltage (Reason ID = 9 or 11). The inverter monitors external conditions and should automatically return to normal once the fault is rectified. If the alarm occurs repeatedly, contact Huawei technical support.
P
Patricia ThompsonAug 28, 2025
What to do if Huawei Inverter shows Invert Module Fault?
- E
  Eric SmithAug 28, 2025
  The Huawei Inverter indicates an Invert Module Fault when abnormal external conditions trigger converter circuit protection inside the inverter. This could be due to a sharp drop in grid voltage or a short circuit, causing high output current (Reason ID = 4), or the inverter's output short-circuiting (Reason ID = 20). The inverter monitors external conditions and should return to normal once the issue is resolved. Check for any short circuits in the inverter's output cables and fix them.
G
Gary McclainAug 27, 2025
Why is my Huawei SUN2000-28KTL showing a Grid Voltage Abnormal error?
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  nancy37Aug 27, 2025
  The grid voltage may be beyond the allowed range. This can happen if the grid A, B, or C phase voltage is less than the allowed range (Reason ID = 1 to 6), or if there's a power outage, a disconnected AC line, or a tripped AC circuit breaker (Reason ID = 29). If it's an accidental grid issue, the Huawei Inverter should automatically return to normal once the problem is resolved. Check if the AC voltage is normal.
J
Joseph MurphyAug 26, 2025
What does String 1-6 Reverse mean on Huawei SUN2000-28KTL?
- H
  hannahcampbellAug 26, 2025
  The Huawei Inverter shows 'String 1-6 Reverse' when the cables between PV strings were connected in reverse during installation. Check if the cables between PV strings are correctly connected and reconnect them if necessary.

Huawei SUN2000-28KTL Specifications

General

Model	SUN2000-28KTL
Rated Output Power	28 kW
Max. Input Voltage	1100 V
MPPT Voltage Range	200 V - 1000 V
Number of MPPT Trackers	2
Max. Input Current per MPPT	26 A
Rated AC Voltage	400 V
Rated Output Voltage	400 V
Output Frequency	50 Hz / 60 Hz
Max. Efficiency	98.6%
Protection Degree	IP65
DC Connection	MC4
Maximum Output Power	28 kW
Power Factor Adjustment Range	0.8 leading ... 0.8 lagging
Operating Temperature Range	-25 °C to 60°C
Cooling	Natural cooling