No relevant resource is found in the selected language.

This site uses cookies. By continuing to browse the site you are agreeing to our use of cookies. Read our privacy policy>Search


To have a better experience, please upgrade your IE browser.


SUN2000-(29.9KTL, 33KTL-A, 36KTL, 42KTL) User Manual

This document describes the SUN2000-(29.9KTL, 33KTL-A, 36KTL, 42KTL) in terms of their installation, electrical connections, commissioning, maintenance, and troubleshooting.
Rate and give feedback:
Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
Working Principle

Working Principle

Conceptual Diagram

The SUN2000 receives inputs from eight PV strings. Then the inputs are grouped into four MPPT routes inside the SUN2000 to track the maximum power point of the PV strings. The DC power is then converted into three-phase AC power through an inverter circuit. Surge protection is supported on both the DC and AC sides. Figure 2-9 shows the conceptual diagram for the SUN2000-29.9KTL/33KTL-A/36KTL. Figure 2-10 shows the conceptual diagram for the SUN2000-42KTL.
Figure 2-9  Conceptual diagram for the SUN2000-29.9KTL/33KTL-A/36KTL
Figure 2-10  Conceptual diagram for the SUN2000-42KTL

Working Modes

The SUN2000 can work in standby, operating, or shutdown mode. Figure 2-11 shows the relationship between the three working modes.
Figure 2-11  SUN2000 working modes
Table 2-5 describes the three working modes shown in Figure 2-11.
Table 2-5  Working mode description

Working Mode



The SUN2000 enters the standby mode when the external environment does not meet the requirements for starting the SUN2000. In standby mode:
  • The SUN2000 continuously performs self-check and enters the operating mode once the operating requirements are met.
  • If the SUN2000 enters the shutdown mode after detecting a shutdown command or a fault after startup.


In operating mode:
  • The SUN2000 converts DC power from PV strings into AC power and feeds the power to the power grid.
  • The SUN2000 tracks the maximum power point to maximize the PV string output.
  • The SUN2000 enters the shutdown mode after detecting a fault or a shutdown command, and enters the standby mode after detecting that the PV string output power does not meet the requirements for grid-tied electricity generation.


  • In standby or operating mode, the SUN2000 enters the shutdown mode after detecting a fault or shutdown command.
  • In shutdown mode, the SUN2000 enters the standby mode after detecting a startup command or that a fault is rectified.
Updated: 2019-08-02

Document ID: EDOC1100019925

Views: 14888

Downloads: 6703

Average rating:
This Document Applies to these Products
Related Documents
Related Version
Previous Next