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U
ubonillaSep 7, 2025
What does insulation failure mean on my SMA STP 33-US-41 Inverter?
- PPamela BrownSep 7, 2025
If your SMA Inverter indicates an insulation failure, check the PV system for ground faults.
What does insulation failure mean on my SMA STP 33-US-41 Inverter?
If your SMA Inverter indicates an insulation failure, check the PV system for ground faults.
What does Grid incident (Event 401) mean on my SMA Inverter?
If your SMA Inverter displays Grid incident (Event 401), it means a stand-alone grid or a very large change in the grid frequency was detected. Check the grid connection for significant short-term frequency fluctuations.
What should I do if my SMA STP 33-US-41 displays 'Residual current too high'?
If your SMA Inverter indicates that the residual current is too high, check the PV system for ground faults.
What does DC overcurrent mean on my SMA Inverter?
If your SMA Inverter displays a DC overcurrent message, ensure that the PV array has been correctly rated and wired if this message is displayed frequently.
General| Model | STP 33-US-41 |
|---|---|
| Type | String Inverter |
| Power Rating | 33 kW |
| Max. Input Voltage | 1000 V |
| Rated AC Power | 33 kW |
| Max. AC Apparent Power | 33 kVA |
| Nominal AC Voltage | 480 V |
| AC Voltage Range | 432 V - 528 V |
| Number of MPPTs | 2 |
| Topology | Transformerless |
| Enclosure Category | NEMA 4X |
| AC Power Output | 33 kW |
| Dimensions | 800 x 600 x 250 mm |
| Operating Temperature Range | -25°C to +60°C |
Information about the document's validity for specific firmware versions.
Defines the intended audience and required skills for the manual.
Outlines the document's organization and scope.
Explains the different warning levels (Danger, Warning, Caution).
Explains the meaning of various symbols used in the manual.
Details the use of typography like bold text and symbols.
Provides resources for further details and support.
Describes the product's designed purpose and suitability.
Critical safety guidelines for operation and maintenance.
Details the physical components and design of the product.
Explains warning and information symbols found on the product itself.
Describes the various interfaces and built-in functionalities of the inverter.
Explains the meaning of different LED indicators and their states.
Guides on connecting to the product's interface via Ethernet or WLAN.
Instructions for user authentication and session management.
Overview of the main dashboard and its components.
How to access and save operational data from the device.
Guide to initiate the step-by-step configuration process.
General guide for adjusting operational settings.
Enabling and configuring the emergency shutdown feature.
Procedures for manual and automatic firmware updates.
Steps to recover or reset lost user credentials.
Lists and explains various error and status messages with corrective actions.
Procedures to diagnose and resolve ground fault issues.
How to clear operation blocks after an arc fault event.
Regulatory compliance details for FCC standards.
Regulatory compliance details for Industry Canada standards.
