Sungrow SH20T User Manual

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Restart the inverter only after removing the fault that impairs safety performance.
As the inverter contains no component parts that can be maintained, never open
the enclosure, or replace any internal components.
To avoid the risk of electric shock, do not perform any other maintenance opera-
tions beyond those described in this manual. If necessary, contact your distributor
first. If the problem persists, contact SUNGROW. Otherwise, the losses caused is
not covered by the warranty.
Touching the PCB or other static sensitive components may cause damage to the
device.
• Do not touch the circuit board unnecessarily.
• Observe the regulations to protect against electrostatic and wear an anti-static
wrist strap.
10.2.2 Routine Maintenance
10.2.3 Replacing the Button Cell
Disconnect the inverter from the grid first, then the PV strings and the battery be-
fore any maintenance work.
Lethal voltage still exists in the inverter. Please wait at least 10 minutes and then
perform maintenance work.
There is a button cell on the inner PCB board. Contact SUNGROW for replacement when
the relevant fault alarm occurs.
Check the fastener, appearance, voltage, and resistance quarterly and annually.
10 Troubleshooting and Maintenance User Manual

Sungrow SH20T Specifications

General

Model	SH20T
Type	String Inverter
Rated Power Output	20000 W
Max. Input Voltage	1100 V
Start Voltage	200 V
Number of MPPTs	2
Max. Input Current per MPPT	13 A
Max. AC Apparent Power	22000 VA
Max. Output Current	32 A
Nominal AC Voltage	400 V
Total Harmonic Distortion	< 3%
Max. Efficiency	98.6%
European Efficiency	98.4%
DC Switch	Yes
Protection Class	IP65
Operating Temperature Range	-25 °C to +60 °C
Max. DC Input Power	30000 W
MPPT Voltage Range	200 V - 1000 V
AC Voltage Range	340 V - 460 V
Nominal Grid Frequency	50/60 Hz
Cooling Method	Natural Cooling