Huawei SUN2000-20KTL User Manual

SUN2000 (8KTL-28KTL)
User Manual
2 Overview
Issue 07 (2014-07-30)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
17
Figure 2-13 Working modes
Figure 2-13 describes the operations shown in Table 2-6.
Table 2-6
Working
Mode
Description
Standby
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 the self-check and enters the operating
mode once the operation requirements are met.
The standby mode involves four phases: initialization detection phase,
insulation resistance detection phase, sunlight detection phase, and no
sunlight phase.
If the SUN2000 receives a shutdown command or detects a fault after
startup in this mode, it enters the shutdown mode.
Operating
In operating mode,

The SUN2000 converts DC power from PV strings into AC power and
feeds the power to the power grid.

The SUN2000 always 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.
Shutdown
The SUN2000 enters the shutdown mode after detecting a fault or receiving

Huawei SUN2000-20KTL Specifications

General

Max. efficiency	98.6%
Rated AC output power	20, 000 W
Max. apparent power	22, 000 VA
No. of MPP trackers	2
Max. input voltage	1100 V
Protection degree	IP65
Max. DC Power	30, 000 W
Start Voltage	200 V
Nominal DC Voltage	600 V
Max. Input Current per MPPT	26 A
Nominal AC Grid Frequency	50 Hz / 60 Hz
Adjustable Power Factor Range	0.8 leading to 0.8 lagging
Total Harmonic Distortion (THD)	<3%
DC Reverse-Polarity Protection	Yes
AC Overcurrent Protection	Yes
AC Short-Circuit Protection	Yes
DC Insulation Resistance Detection	Yes
Residual Current Monitoring	Yes
AC Overvoltage Protection	Yes
DC Switch	Yes
Cooling Method	Natural Convection
AC output voltage	220 V / 380 V, 230 V / 400 V
MPPT operating voltage range	200 V - 1000 V
Operating temperature range	-25°C to +60°C
Relative Humidity	0% - 100%
Operating Altitude	Up to 4000 m
Surge Protection	Type II DC & AC