New VDE-AR-N 4105:2026-03!
Customer information on the current German requirements for grid connection, protection concepts and zero feed-in
The VDE-AR-N 4105:2026-03 is the current German standard for the grid connection of generating installations and storage systems in the low-voltage network. It defines the technical requirements for planning, protection concepts and system operation.
On this page, you will find essential information about the standard, our detailed customer information for download, and the suitable devices for a wide range of applications.
Customer Information - available soon
* Please note that our detailed customer information is currently available in German only.
Choose future-proof energy generation with solutions from ZIEHL.
EFR4002IP
• Certified Pav, e-monitoring with continuous monitoring and switch-off time along the limit curve according to VDE-AR-N
4105 + 4110
• Can be used for medium-voltage applications - Connection of earthed medium-voltage transformers and series-connected measuring devices possible
• Install more generation capacity than the grid connection allows
• Simple parameterization
UFR1002IP
• Grid and Plant Protection according to VDE-AR-N 4105 + 4110
• Extended voltage range up to 1,200V with coupling device type VG1200
• LCD plain text display and joystick for easy operation
• IP interface for configuration, remote access and updates
• Preconfigured functions can be set via additional changeover contact
• Simple parameterization
VG1200
• Coupling device for an extended voltage range of our UFR1002IP
• Voltage ranges up to 1,200V
• Suitable for feeding into the medium-voltage grid in conjunction with the UFR1002IP
EFR4002IPR
• Certified Pav, e-monitoring with continuous monitoring and switch-off time along the limit curve according to VDE-AR-N
4105 + 4110
• Can be used for medium-voltage applications - Connection of Rogowski Coil 333mV possible
• Install more generation capacity than the grid connection allows
• Simple parameterization
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