SI4548-US-10 Manual
Table Of Contents
- 1 Information on this Manual
- 2 Sunny Island 4548-US/6048-US
- 3 Safety Precautions
- 4 Assembly
- 5 Opening and Closing
- 6 Electrical Connection
- 7 Control Elements
- 8 Initial Start-Up
- 9 Switching On and Off
- 10 Operation
- 11 Archiving Data on an SD Card
- 12 Additional Functions
- 12.1 Load Shedding
- 12.2 Sleep Mode
- 12.3 Time-Controlled Operation
- 12.4 Overload and Short-Circuit Behavior
- 12.5 Mixed Operation with Sunny Island inverters of Different Power
- 12.6 Device Faults and Autostart
- 12.7 Automatic Frequency Synchronization
- 12.8 Time-Controlled Standby
- 12.9 Behavior in the Event of a Failure in a Three-Phase System
- 13 Battery Management
- 14 Connecting External Sources
- 14.1 Generator
- 14.1.1 Parallel Connection
- 14.1.2 Generator Start Options
- 14.1.3 Generator Operation
- 14.1.4 Manual Generator Operation
- 14.1.5 Automatic Generator Operation
- 14.1.6 Limits and Power Control
- 14.1.7 Run Times
- 14.1.8 Operation Together with PV Inverters and Wind Power Inverters
- 14.1.9 Stopping the Generator
- 14.1.10 Stopping the Sunny Island
- 14.1.11 Disturbances
- 14.2 Grid
- 14.2.1 Limits of the Voltage Range and Frequency Range
- 14.2.2 Starting the Sunny Island
- 14.2.3 Operation in the Event of Grid Failure in a Grid-Tie Backup Configuration
- 14.2.4 Backup Operation and Anti-Islanding
- 14.2.5 Grid Reconnection
- 14.2.6 Grid Operation
- 14.2.7 Grid Failure
- 14.2.8 Disturbances
- 14.2.9 Limits and Power Control
- 14.2.10 Operation Together with PV Inverters and Wind Power Inverters
- 14.3 Generator and Grid
- 14.1 Generator
- 15 Relays
- 16 Multicluster Operation
- 16.1 Communication between the Sunny Island inverters
- 16.2 Initial Start-Up of the Multicluster System
- 16.3 Switching a Multicluster System On and Off
- 16.4 Generator Operation
- 16.5 Behavior with Different States of Charge
- 16.6 Testing the Multicluster Communication
- 16.7 Automatic Frequency Synchronization
- 16.8 Updating the Firmware
- 16.9 Error Handling in the Multicluster System
- 16.10 Grid Operation
- 16.11 Generator Emergency Operation
- 17 PV Inverters
- 18 Maintenance and Care
- 19 Parameter Lists
- 20 Troubleshooting
- 21 Accessories
- 22 Technical Data
- 23 Glossary
- 24 Contact
23 Glossary SMA America, LLC
236 SI4548_6048-US-TB_en-13 Technical description
Parallel connection
Parallel connection of the batteries (all positive poles connected and all negative poles connected)
increases the capacity of the battery storage system while keeping the voltage constant.
Example: Two 24 V/100 Ah batteries connected in parallel still have a voltage of 24 V, however, a
capacity of 100 Ah + 100 Ah = 200 Ah.
Piggy-Back (Board)
A printed circuit board that is plugged into another board to increase performance or expand
capabilities. A Piggy-Back printed circuit board can also replace an individual chip. In this case, the
chip is removed and the board is plugged into the empty base.
PLC
Abbreviation for Power Line Communication: Describes the process of data transmission over the grid
supply cables. The PLC power module is used to amplify the signal and is connected in multi-string
and Sunny Mini Central inverters. Powerline communication is not suitable for Sunny Island inverters.
Protected loads panel
See Stand-alone grid system.
PV
Photovoltaics (PV) is the conversion of solar irradiation into electrical energy using special
semiconductors called PV cells.
PV array
Technical device for the conversion of solar energy into electrical energy. All electrically connected
(in series and in parallel) PV modules of a PV plant are referred to as the PV array.
PV cell
An electronic component that generates electrical energy when irradiated with sunlight.
Since the electrical voltage of a single PV cell is very low (approx. 0.5 V), multiple PV cells are
combined with PV modules. The most common semiconductor material presently used for PV cells is
silicon which is manufactured in different forms (monocrystalline, polycrystalline, amorphous). In
addition to different mechanical variations, that are usually designed to increase the level of
efficiency, completely new materials are currently being tested (cadmium telluride, cadmium indium
sulphide, titanium dioxide and many others).
PV field
See PV array