How to fix PM isolation LT error on REFU REFUsol 20K?
If your REFU Inverter shows a PM isolation LT error, it means the power section detects an isolation error on activation. Check system isolation. If you consider the isolation resistance to be in order, contact Service.
What does Keep Alive mean on REFU Inverter?
If your REFU Inverter displays Keep Alive error, it means internal communication monitoring has determined a fault. Please contact Service.
What to do if REFU Inverter displays SR parameter error?
If your REFU Inverter displays an SR parameter error, it signifies an error in parameter initialization, and the device has been permanently shut down. Please contact Service.
What to do if REFU Inverter showing update fault?
If your REFU Inverter displays an update fault, it means the update has failed. Contact Service.
What to do if REFU REFUsol 20K Inverter shows Supply voltage LT error?
If your REFU Inverter displays a Supply voltage LT error, it means the supply voltage at the power section is too low. Please contact Service.
What does Activation LT 4 mean on REFU Inverter?
If your REFU Inverter displays Activation LT 4 error, it means balancing has failed. Please contact Service.
How to resolve Initialisation C1 error on REFU Inverter?
If your REFU Inverter displays an Initialisation C1 error, restart the inverter. If this does not rectify the error, contact Service.
What to do if REFU Inverter shows DC-voltage measurement error?
If your REFU Inverter displays a DC-voltage measurement error (DC link 3), wait for the measurements to become stable again. If this takes more than 2-3 hours, please contact Service.
What does Communication LT mean on REFU Inverter?
If your REFU Inverter shows Communication LT error, it means there is a communication malfunction between the power section and the control and regulation unit. The inverter will acknowledge the error automatically. If the problem occurs repeatedly, contact Service.
What to do if REFU Inverter shows RCD fault?
If the AFI-Board unit in your REFU Inverter detects a residual current, it will lead to an immediate shutdown. Check the system isolation. If you believe the isolation impedance is fine, contact Service.
Specifies the target audience and required qualifications for operating the inverter safely.
Highlights potential dangers from improper handling, installation, or use of the inverter.
Details safety measures to prevent contact with live electrical parts.
Warns about potential burns from hot surfaces on the inverter housing.
Provides safety instructions for handling and assembling the inverter to prevent injuries.
Specifies the conditions and restrictions for the inverter's installation location.
Provides steps for powering up the inverter and initial checks.
Guides through initial setup of country code and language for grid parameters.
Details the sequence of events during inverter startup and self-test.
Step-by-step guide to change the inverter's display language.
Instructions on how to limit the inverter's power output.
Explains the use of REFUset software for firmware updates and parameter settings.
Explains the self-test routine and handling of detected errors.
Describes transient offline states and automatic fault acknowledgement.
Details types of faults, their indicators, and the fault memory.
General| Rated Power | 20 kW |
|---|---|
| AC nominal voltage | 400 V |
| AC voltage range | 310 V - 480 V |
| Nominal grid frequency | 50 Hz / 60 Hz |
| Max. DC voltage | 1000 V |
| Number of MPP trackers | 2 |
| Max. input current per MPP tracker | 33 A |
| Weight | 45 kg |
| Frequency | 50 Hz / 60 Hz |
| Topology | Transformerless |
| Operating Temperature Range | -25°C to +60°C |
| Protection Rating | IP65 |
| Max. apparent AC power | 20000 VA |
| Max. DC power | 21000 W |
| Input Voltage Range | 200 V - 1000 V |
| Maximum Efficiency | 98.2% |
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